Question 1

Is OP-4SA nonylphenol polyoxyethylene ether ammonium sulfate harmful to humans? Does it have an impact on the environment?

Accepted Answer

OP-4SA has clear irritant hazards to humans, long-term negative effects on aquatic ecosystems, and potential environmental hormone effects. Strict control of exposure and emissions is necessary. Detailed Description According to the Globally Harmonized System of Classification and Labelling of Chemicals (GHS), OP-4SA nonylphenol polyoxyethylene ether ammonium sulte has clear hazard classifications. In terms of human health, this product is classified as skin irritation (H315) and serious eye irritation (H319). In case of accidental contact during operation, it may cause skin redness, swelling, itching, and other irritation reactions, while eye contact may lead to severe discomfort and damage. Under normal industrial use conditions, health risks are controllable when following safe operating procedures and wearing appropriate personal protective equipment. However, it should be noted that this product is not acutely toxic; its main health hazards are localized irritant effects. In terms of ecological environment, the hazard classification of this product is H412—Harmful to aquatic life with long lasting effects. This means that even low-concentration discharges may be toxic to fish, plankton, and other aquatic organisms, and such effects are not easily degraded quickly in the natural environment. Particularly noteworthy is that the molecular structure of the product contains a nonylphenol polyoxyethylene ether chain segment, which is recognized as having potential environmental hormone effects (endocrine disruptors). Even at extremely low concentrations, it may interfere with the normal endocrine systems of aquatic organisms, affecting their reproduction and development. Therefore, wastewater containing this product must be properly treated and is strictly prohibited from direct discharge into sewers, rivers, lakes, and other water bodies. Technical Parameters Hazard CategoryGHS Classification CodeHazard Statement Skin corrosion/irritationH315Causes skin irritation Serious eye damage/eye irritationH319Causes serious eye irritation Aquatic environment hazard (chronic)H412Harmful to aquatic life with long lasting effects Environmental hormone effect—Contains nonylphenol polyoxyethylene ether structure with potential endocrine disruption Application Recommendations Given the above hazard characteristics, when using OP-4SA, the following protective measures must be strictly implemented: operators must wear chemical-resistant gloves (such as nitrile rubber), protective clothing, safety goggles or ce shields; the workplace should be equipped with emergency flushing cilities such as eyewash stations and safety showers; eating, drinking, or smoking is prohibited during operation, and after work, thoroughly wash hands and exposed skin. In case of eye contact, immediately rinse with plenty of clean water or saline for at least 15 minutes with eyes open, and seek medical attention as soon as possible. After skin contact, immediately remove contaminated clothing and wash the affected area with soap and plenty of water. In environmental management, enterprises should establish a comprehensive wastewater collection and treatment system to ensure that production waste liquids do not directly enter natural water bodies. Waste containing this product should be disposed of in accordance with hazardous waste regulations. Containers should be emptied, cleaned, and sorted for treatment; contaminated packaging must not be discarded arbitrarily. Downstream users should also pay attention to the residual issues of nonylphenol polyoxyethylene ether substances in formulated products. Especially for exported products, the restrictions on APEO substances in target markets (such as the EU REACH regulation, which has listed nonylphenol substances as substances of very high concern) must be considered. Precautions This product is not combustible, but heating or burning may produce irritating toxic fumes such as sulfur oxides and nitrogen oxides; firefighters should wear self-contained breathing apparatus. If turbidity or stratification occurs at low temperatures, it is a normal physical phenomenon. After warming to room temperature and stirring thoroughly, the product can still be used normally without affecting performance. For detailed safety operating guidelines, please refer to the Safety Data Sheet (SDS). The above information is only a summary and cannot replace reading and understanding the complete SDS.

Question 2

What should I do if problems occur during the use of OP-4SA nonylphenol polyoxyethylene ether ammonium sulfate? How to obtain technical support?

Accepted Answer

If you encounter usage problems, please first refer to the Safety Data Sheet (SDS) for emergency treatment, and then contact your direct supplier or the sales representative of Haian Guoli Chemical Co., Ltd. for professional technical support. Common usage problem troubleshooting Problems that may occur in the practical application of OP-4SA nonylphenol polyoxyethylene ether ammonium sulte usually involve changes in physical state, performance fluctuations, or safety incidents. If the product becomes turbid or separates at low temperatures (below 0°C), this is a normal physical phenomenon. Simply warm the product to room temperature and stir thoroughly to restore it; this does not affect performance. If skin or eye contact occurs, follow the safety instructions immediately: for eye contact, rinse with plenty of water for at least 15 minutes and seek immediate medical attention; for skin contact, remove contaminated clothing and rinse with soap and water for at least 15 minutes. In terms of product performance, if poor emulsification results are encountered, it is recommended to check the pH of the formulation system — the product performs stably under weak acid to alkaline conditions, but it will decompose and become ineffective when interacting with strong acids. For mechanical stability or particle size distribution issues in emulsion polymerization applications, it is recommended to consider compounding with other nonionic emulsifiers to achieve synergistic effects. The precise dosage needs to be determined through experiments. Additionally, improper storage may cause the product to absorb moisture and deteriorate. Once the container is opened, it must be sealed immediately and stored in a cool, dry, and well-ventilated place. How to obtain technical support If you need professional advice on specific application formulations or to solve complex technical problems, the most effective way is to contact the sales representative or authorized dealer of Guoli Chemical who supplies your product. They can coordinate technical engineers to provide one-on-one application guidance, including but not limited to emulsifier compounding schemes, optimal dosage recommendations, and process parameter optimization. When contacting, please prepare the product batch number, purchase channel, and a detailed description of the problem (including application conditions, formulation ratios, and abnormal phenomena). You can also visit the official website of Haian Guoli Chemical Co., Ltd. to access detailed technical data, MSDS (SDS), and the latest application cases related to the product. According to database records, this product is packaged in 50kg plastic drums, 200kg plastic drums, or IBC totes. The product packaging is usually labeled with detailed information and emergency contact details. Quick reference of key product parameters ParameterTypical data AppearanceLight yellow transparent liquid Ion typeAnionic pH (1% aqueous solution)5.0~7.0 HLB valueApproximately 13.5 Density (25°C)1.05~1.10 g/cm³ Alkali resistanceStable in ≤10% NaOH solution Shelf life12 months (sealed, stored in a cool place) Emergency shower cilitiesEyewash station, safety shower Precautions This product contains a nonylphenol polyoxyethylene ether structure, which has potential endocrine-disrupting effects. During operation, be sure to wear nitrile rubber gloves and safety goggles, and ensure good ventilation in the work area. Any waste liquid or washing water must not be discharged directly into surce water or sewers. It must be collected strictly in accordance with local environmental regulations and handed over to qualified units for disposal. This product is not flammable, but it can decompose and become combustible when exposed to strong oxidizers or heat. Keep away from fire sources and equip with dry powder or carbon dioxide fire extinguishers. If you need to request the Certificate of Analysis (COA), customized application formulation recommendations, or regulatory compliance consultation (such as REACH compliance), please submit a formal technical request to the sales personnel.

Question 3

How to purchase OP-4SA nonylphenol polyoxyethylene ether ammonium sulfate? What is the minimum order quantity?

Accepted Answer

To purchase OP-4SA nonylphenol polyoxyethylene ether ammonium sulte, it is recommended to directly contact the official sales channels of Haian Guoli Chemical Co., Ltd. (Guoli Chemical). The minimum packaging specification is a 50kg plastic drum. The specific minimum order quantity needs to be confirmed with the sales team. Detailed Description OP-4SA (CAS No.: 9051-57-4) is a conventional industrial surctant product sold by Guoli Chemical. It appears as a light yellow transparent liquid and is widely used in emulsion polymerization, textile auxiliaries, leather processing, metalworking fluids, and other fields. This product is a mature product in the Guoli Chemical database, with stable supply and year-round stock availability. The database shows three packaging specifications for this product: 50kg plastic drum, 200kg plastic drum, IBC tote. Among them, the 50kg plastic drum is the minimum packaging unit. Theoretically, the minimum single order quantity is at least 1 drum (i.e., 50kg). However, the actual minimum order quantity (MOQ) in business cooperation may vary depending on ctors such as inventory status, logistics arrangements, and whether it is the first cooperation. For example, there may be requirements for pallet-based minimum orders or full truckload shipping. The specifics need to be confirmed with the Guoli Chemical sales department. In terms of price, the database shows that the product is priced in "yuan/ton", but the actual transaction price fluctuates with ctors such as raw material market changes, purchase volume, and cooperation model. The price information in the database was last updated in June 2026, labeled as "The above prices are for reference only. For actual prices, please contact the sales team for the latest quotation." Therefore, it is recommended to obtain the latest quotation before placing an order. Purchase Channels and Process Suggestions To purchase OP-4SA product, it is recommended to follow the steps below: Contact the official sales team: Contact the sales representative via the official website of Haian Guoli Chemical Co., Ltd., enterprise WeChat, or official phone number, inform them of the product name (OP-4SA nonylphenol polyoxyethylene ether ammonium sulte) and the expected purchase quantity. Request the latest quotation and technical documentation: Confirm with the salesperson the current batch price, minimum order quantity, delivery time, and other business terms. At the same time, you can request the latest Technical Data Sheet (TDS) and Safety Data Sheet (SDS/MSDS). Confirm sample testing (if needed): For first-time cooperation, customers can usually request samples for formulation compatibility testing to ensure the product meets your process requirements before bulk procurement. Sign the contract and arrange logistics: After confirming the order, sign the purchase and sales contract. Guoli Chemical will arrange shipment according to the agreement. The product is a general chemical, so transportation safety and leakage prevention measures should be taken. Product Specification Summary Parameter ItemSpecification Product NameOP-4SA nonylphenol polyoxyethylene ether ammonium sulte CAS No.9051-57-4 AppearanceLight yellow transparent liquid Ion TypeAnionic surctant Active Content≥25% (Solid content 25~30%) pH Value (1% aqueous solution)5.0~7.0 HLB ValueApproximately 13.5 Packaging Specification50kg plastic drum / 200kg plastic drum / IBC tote Shelf Life12 months (under sealed, cool and dry conditions) Application Suggestions OP-4SA, as an anionic emulsifier and wetting penetrating agent, is recommended to be used in combination with other anionic or nonionic emulsifiers in emulsion polymerization to achieve synergistic effects. When used in textile pretreatment, it is recommended to test the alkali resistance and penetration performance under experimental conditions to determine the optimal dosage. The specific dosage should be determined experimentally based on the target system and process conditions. The product should be thoroughly mixed and stirred before use. Precautions Price information is time-sensitive. Be sure to confirm the latest quotation of the day with the sales team before placing an order. If turbidity or stratification occurs at low temperatures, it is a normal physical phenomenon. After warming to room temperature and stirring evenly, the product can still be used normally without affecting performance. This product has hazards of skin irritation (H315) and serious eye irritation (H319). Personal protective equipment such as protective gloves and safety glasses should be worn during operation. The product contains nonylphenol polyoxyethylene ether structure, which has potential environmental hormone effects. Wastewater must be treated to meet standards before discharge and must not be directly discharged into water bodies.

Question 4

Does OP-4SA (Nonylphenol Polyoxyethylene Ether Ammonium Sulfate) meet environmental requirements? Can a test report be provided?

Accepted Answer

OP-4SA contains a nonylphenol polyoxyethylene ether structure, which has potential endocrine-disrupting effects and is not considered a green and environmentally friendly surctant. It is strictly restricted in regions such as the European Union. Detailed Explanation The environmental compliance of OP-4SA (Nonylphenol Polyoxyethylene Ether Ammonium Sulte) needs to be examined from two perspectives: From the perspective of the product's own chemical properties, it does not meet the current international mainstream "green and environmentally friendly" standards. This product contains a nonylphenol polyoxyethylene ether (NPEO) structure. According to the Safety Data Sheet (SDS), it is harmful to aquatic life with long-lasting effects (H412), and it is explicitly noted that it "has potential endocrine-disrupting effects and requires strict emission control." Nonylphenol polyoxyethylene ether compounds degrade in the environment to produce nonylphenol (NP), which is a recognized endocrine disruptor that persists in the environment and has bioaccumulative properties. Therefore, the EU REACH regulation has listed nonylphenol and nonylphenol polyoxyethylene ether as Substances of Very High Concern (SVHC), imposing strict controls on their emissions in fields such as industrial cleaning and textile processing. If your end market involves the EU or environmentally sensitive industries, the compliance risks of using this product should be carefully evaluated. In the domestic market, OP-4SA is still widely used in industrial fields such as emulsion polymerization, textile auxiliaries, and leather processing. However, companies using it must strictly comply with wastewater discharge standards. The treated waste liquid must not be directly discharged into water bodies; it must be treated by a professional wastewater treatment system before being discharged up to standard. It is recommended to fully understand the environmental access requirements of downstream customers and end applications before use. Explanation Regarding Test Reports Regarding the provision of test reports: Our company (Guoli Chemical), as the manucturer, can provide customers with the following routine quality inspection documents: Certificate of Analysis (COA) for outgoing products, covering physical and chemical indicators such as appearance, pH value, and active matter content; Safety Data Sheet (SDS/MSDS), covering hazard overview, first aid measures, ecological information, and other safety data. However, for specific third-party environmental test reports (such as RoHS, REACH compliance testing, biodegradability tests, endocrine disruptor screening, etc.), the customer needs to specify the test items and standards. After mutual confirmation, we can determine whether to arrange for third-party testing. Technical Parameters ItemDescription GHS Aquatic Toxicity ClassificationH412 — Harmful to aquatic life with long-lasting effects Endocrine Disruptor RiskContains nonylphenol polyoxyethylene ether structure, with potential endocrine-disrupting effects BiodegradabilityDegradation product nonylphenol (NP) is a persistent organic pollutant with bioaccumulative properties REACH ComplianceNonylphenol and NPEO compounds have been listed as Substances of Very High Concern (SVHC) Available Quality DocumentsOutgoing COA inspection report, SDS safety data sheet Application Recommendations Alternative Recommendations for Environmentally Sensitive Scenarios: If your application requires high environmental compliance (e.g., products exported to the EU, food contact applications, household cleaning, etc.), it is recommended to consider using alternatives that do not contain nonylphenol structures, such as alcohol polyoxyethylene ether sulte (AES) or ammonium alcohol ether sulte. These products have better biodegradability and no endocrine-disrupting risks. Compliance Measures When OP-4SA Must Be Used: If the process requires this product, ensure the installation of complete wastewater treatment cilities (e.g., biochemical treatment + advanced treatment with activated carbon adsorption) to ensure that residual nonylphenol in wastewater meets discharge standards before release. At the same time, establish a chemical management ledger and conduct regular monitoring of end-of-pipe emissions. Precautions Waste from this product must not be directly discharged into sewers, soil, or water bodies. It must be disposed of by qualified units in accordance with hazardous waste regulations. If third-party environmental test reports (required by specific regulations or customers) are needed, please contact our sales department to confirm the test items and costs. The testing turnaround time is usually 7-15 working days. Before use, carefully read the Ecological Information section (Section 12) and the Disposal Considerations section (Section 13) in the SDS.

Question 5

What are the advantages of OP-4SA nonylphenol polyoxyethylene ether ammonium sulfate compared to other similar products?

Accepted Answer

According to the technical data from Guoli Chemical, the core advantage of OP-4SA nonylphenol polyoxyethylene ether ammonium sulte lies in its unique molecular structure design. It is not a simple anionic surctant, but **combines the characteristics of both nonionic and anionic surctants**, thus surpassing traditional single-type products in comprehensive performance. Its specific advantages are reflected in the following aspects: #### 1. Molecular structure advantage: Dual stabilization mechanism Traditional anionic emulsifiers mainly rely on electrostatic repulsion to stabilize emulsions, while OP-4SA molecules contain both nonylphenol polyoxyethylene ether segments (nonionic) and ammonium sulte groups (anionic). - **Nonionic segment (polyoxyethylene ether)**: Provides steric hindrance stabilization. - **Anionic group (ammonium sulte)**: Provides electrostatic stabilization. This "double insurance" stabilization mechanism makes emulsions prepared with it more resistant to high shear forces, high salt concentrations, or temperature changes compared to products stabilized by a single mechanism. #### 2. Core performance advantages - **Excellent hard water resistance and electrolyte compatibility**: Compared to traditional carboxylate or sulfonate anionic surctants, OP-4SA is less prone to forming calcium soap precipitates in hard water or saline systems, and can stably compound with various inorganic salts, alkalis, and other additives, greatly expanding its application scope in complex industrial formulations. - **Superior mechanical stability and chemical stability**: In emulsion polymerization, continuous stirring, shearing, and monomer addition can destabilize the emulsion. With its unique stabilization mechanism, OP-4SA effectively ensures smooth polymerization, reduces gel rate, and ensures long-term storage stability of the final emulsion. - **Outstanding wetting and emulsifying ability**: The product can significantly reduce the surce tension of the system, providing st and efficient emulsification for various oil phases and monomers, resulting in finer and more stable emulsions. #### 3. Specific application performance To better illustrate, we compare the qualitative advantages of OP-4SA with several common similar products: | Performance Indicator | OP-4SA (Guoli Chemical) | Traditional Anionic Emulsifiers (e.g., LAS, SDS) | Pure Nonionic Emulsifiers (e.g., NP/TX series) | | :--- | :--- | :--- | :--- | | **Hard water resistance** | **Excellent**, not prone to calcium soap formation | Poor, prone to precipitation and deactivation | Good, no precipitation | | **Electrolyte compatibility** | **Good**, stable compounding | Average, prone to salting out in high salt | Good | | **Emulsion stabilization mechanism** | **Dual mechanism** (electrostatic + steric hindrance) | Single mechanism (electrostatic) | Single mechanism (steric hindrance) | | **Mechanical stability** | **High** | Medium | Medium | | **Wetting and penetrating power** | **Strong** | Strong | Average to good | | **Effect of cloud point** | Not limited by cloud point (ionic characteristic) | No cloud point | Has cloud point, may precipitate at high temperature | In specific application scenarios, this advantage is manifested as: - **Emulsion polymerization**: As an emulsifier for styrene-acrylic, pure acrylic, vinyl acetate-acrylic systems, it can more effectively control latex particle size and improve film-forming performance. - **Textile auxiliaries**: When used as scouring or dyeing auxiliaries, its excellent permeability and alkali resistance improve processing efficiency and bric leveling. - **Metalworking fluids**: In emulsified cutting fluid formulations, it provides better emulsion stability and synergistic anti-corrosion effects. **Precautions:** The recommended dosage of OP-4SA in different applications needs to be determined through experiments. Especially in emulsion polymerization, it is recommended to use it in combination with other nonionic emulsifiers to achieve synergistic effects. This product is **anionic**, and compatibility testing should be performed when compounding with cationic auxiliaries.

Question 6

How to store OP-4SA nonylphenol polyoxyethylene ether ammonium sulfate? What is the shelf life?

Accepted Answer

OP-4SA should be stored in a cool, dry, and well-ventilated place. The recommended temperature is 5°C to 35°C, keep the container tightly closed, and the shelf life is 12 months under the specified storage conditions. Detailed Description The storage of OP-4SA nonylphenol polyoxyethylene ether ammonium sulte must follow standardized chemical warehouse management requirements. This product should be stored in a cool, dry, and well-ventilated warehouse, away from fire, heat sources, and direct sunlight. The storage temperature is recommended to be maintained between 5°C and 35°C, avoiding freezing, while also preventing an increase in internal container pressure due to excessive temperature. After opening, the product should be sealed promptly to avoid prolonged exposure to air and prevent moisture absorption and deterioration. Regarding packaging containers, clean, sealed plastic drums or iron drums lined with plastic bags should be used. Suitable materials include stainless steel, polyethylene, or polypropylene lining. Corrosion-resistant and leak-proof storage containers and pallets should be used. The storage area should be equipped with spill containment devices, the floor should be impermeable, and corresponding fire-fighting and emergency equipment should be provided. This product should be stored separately from strong oxidizers, strong acids, and alkalis to avoid hazardous reactions. When not in use, the container must be tightly closed to prevent spills and leaks. Under the specified storage conditions, the product has a shelf life of 12 months. Shelf life management must be followed, and package integrity should be checked regularly. Key Storage Conditions Storage RequirementSpecific Description Storage EnvironmentCool, dry, well-ventilated warehouse Temperature Range5°C to 35°C Container RequirementsClean, sealed plastic drums or iron drums lined with plastic bags; stainless steel, polyethylene, or polypropylene lining materials Shelf Life12 months (under specified storage conditions) Substances to AvoidStrong oxidizers, strong acids, alkalis, fire sources, heat sources Special Situation Handling If turbidity or layering occurs at low temperatures, it is a normal physical phenomenon. After warming to room temperature and stirring evenly, it can still be used normally without affecting product performance. However, product freezing should be avoided, and the storage temperature should not be below 5°C. Precautions During operation, appropriate personal protective equipment should be worn, including chemical-resistant gloves (e.g., nitrile rubber), protective clothing, safety goggles or ce shield. This product is harmful to aquatic life with long-lasting effects (H412). Discharge should be strictly controlled to prevent entry into sewers, soil, or water bodies. Waste disposal must comply with local environmental regulations and should not be directly discharged into water bodies. The maximum storage period should follow the supplier's recommendations. Package integrity should be checked regularly. Products beyond the shelf life must be tested and confirmed before use.

Question 7

What safety precautions should be taken when using OP-4SA nonylphenol ethoxylate ammonium sulfate?

Accepted Answer

When using OP-4SA, special attention should be paid to preventing skin and eye irritation, while strictly controlling environmental emissions, as it has long-term hazards to aquatic organisms. Detailed Explanation OP-4SA nonylphenol ethoxylate ammonium sulte is an anionic surctant. According to the GHS (Globally Harmonized System of Classification and Labelling of Chemicals), this product has three main hazards: skin irritation (H315), serious eye irritation (H319), and harmful to aquatic life with long lasting effects (H412). Improper protective measures during operation may lead to contact dermatitis or eye damage; if discharged into water bodies, the nonylphenol ethoxylate structure it contains has potential endocrine-disrupting effects, causing long-term negative impacts on the aquatic ecological environment. In routine operations, it must be used in a well-ventilated area, with local exhaust ventilation provided when necessary. Operators should wear chemical-resistant gloves (e.g., nitrile rubber), protective clothing, safety goggles or ce shields throughout the operation. Eating, drinking, and smoking are prohibited during operation. After work, hands and exposed skin should be thoroughly washed. The product should be kept away from incompatible materials such as strong oxidizers and strong acids, and containers should be tightly closed when not in use to prevent leakage. For storage, the product should be kept in a cool, dry, well-ventilated warehouse, away from fire, heat sources, and direct sunlight. The storage temperature is recommended to be maintained between 5°C and 35°C, avoiding freezing. Suitable container materials include stainless steel, polyethylene, or polypropylene-lined materials. It should be stored separately from strong oxidizers, strong acids, and alkalis. The product has a shelf life of 12 months, and the integrity of the packaging should be regularly checked. Summary of First Aid Measures Contact TypeEmergency Treatment Methods Eye ContactImmediately flush eyes with plenty of water or saline solution for at least 15 minutes, frequently lifting the upper and lower eyelids to ensure thorough rinsing; remove contact lenses after flushing and continue rinsing, then seek medical attention immediately. Skin ContactRemove contaminated clothing and shoes, wash the affected area with plenty of soap and water for at least 15 minutes; if irritation or rash occurs, seek medical attention; wash contaminated clothing before reuse. InhalationMove the person to fresh air immediately, keep the airway clear and rest in a warm position; if discomfort occurs, call a poison control center or seek medical attention. Spill TreatmentEvacuate non-essential personnel; emergency responders should wear full protective equipment; contain and absorb the spill with inert absorbent materials (e.g., sand, vermiculite), collect in sealed containers for disposal; prevent entry into drains, soil, or water bodies. Firefighting and Waste Disposal Recommendations Although this product is not easily flammable, heating or combustion may produce irritating and toxic fumes such as sulfur oxides and nitrogen oxides. For firefighting, use water spray, alcohol-resistant foam, dry chemical, or carbon dioxide. Firefighters must wear self-contained breathing apparatus and full protective gear. Heated containers should be cooled with water spray to prevent pressure build-up and rupture. For waste disposal, as this product contains components harmful to aquatic life, it must not be mixed with household waste or directly discharged into soil or water bodies. Waste liquids and contaminated packaging should be handled by qualified hazardous waste disposal cilities in accordance with local environmental regulations. Contaminated packaging should not be discarded arbitrarily. Special Precautions This product contains a nonylphenol ethoxylate structure with potential endocrine-disrupting effects; emissions must be strictly controlled, and the product must not be allowed to enter natural water bodies. If turbidity or separation occurs at low temperatures, it is a normal physical phenomenon; after warming to room temperature and stirring evenly, it can still be used normally without affecting product performance. Emergency flushing cilities (eyewash stations, safety showers) should be available in the operation area. Operators should receive chemical safety training before operation. For details, refer to the Safety Data Sheet (SDS).

Question 8

How to use OP-4SA nonylphenol polyoxyethylene ether ammonium sulfate? What is the recommended dosage?

Accepted Answer

The specific dosage of OP-4SA needs to be determined through experiments based on the application system and process conditions. The general reference range is usually 1% to 10% of the total formula. Detailed Description OP-4SA nonylphenol polyoxyethylene ether ammonium sulte is a highly efficient surctant with both nonionic and anionic characteristics, with an active ingredient content of ≥25% and an HLB value of approximately 13.5. In practical use, it is typically added directly to the formula system as an emulsifier, wetting and penetrating agent, or dispersant. The product should be thoroughly stirred before use. If turbidity or stratification occurs at low temperatures, it is a normal physical phenomenon. After warming to room temperature and stirring evenly, it can still be used normally without affecting product performance. After opening, it should be stored sealed to avoid prolonged exposure to air. Since OP-4SA is a light yellow transparent liquid (active ingredient 25%~30%) with good water solubility and oil solubility, it can be directly added to the water phase or oil phase for stirring and dispersion. To improve dispersion efficiency and avoid local high concentration, it is recommended to add it gradually and stir evenly at an appropriate temperature (generally 20°C~40°C). In emulsion polymerization applications, it is recommended to use it in combination with other anionic or nonionic emulsifiers to achieve synergistic effects and better control of latex particle size and system stability. It should be emphasized that different types of application systems have vastly different requirements for emulsifiers, influenced by ctors such as monomer type, oil phase type, water hardness, pH conditions, and final product performance requirements. Therefore, the above dosage range is only a general industry reference, and the actual optimal dosage must be determined through systematic experiments. Guoli Chemical recommends conducting small-scale experiments before formal production to determine the specific dosage most suitable for your formula. Recommended Dosages for Various Application Fields Application Field Recommended Dosage (% of total formula) Usage Method Emulsion Polymerization (Emulsifier) 1.0%~4.0% Recommended to compound with anionic or nonionic emulsifiers, add to the water phase and stir to disperse Textile Auxiliaries (Wetting and Penetrating Agent) 0.5%~3.0% Directly added to the working solution, suitable for pretreatment scouring, dyeing leveling, etc. Leather Treatment (Degreasing/Penetration) 1.0%~5.0% Added to soaking, degreasing, or tanning baths, used with mechanical action Metalworking Fluids (Emulsifier) 3.0%~10.0% As a component of emulsified cutting fluid formulas, compounded with base oil and other additives Industrial Cleaning (Surctant) 2.0%~8.0% Used in hard surce cleaners and heavy-duty detergent formulas Note: The above dosage data are derived from chemical industry application experience. Specific dosages should be confirmed by experiments. Product active ingredient content ≥25% (database value). Technical Parameters Parameter Item Parameter Value Appearance Light yellow transparent liquid Active Ingredient Content ≥25% HLB Value 13.5 pH Value (1% aqueous solution) 5.0~7.0 Ion Type Anionic Solubility Easily soluble in oil and water Surce Tension (1% aqueous solution, 25°C) 30~33 mN\/m Critical Micelle Concentration (CMC) 0.02%~0.05% (mass fraction) Penetration Power (0.1% aqueous solution, canvas sedimentation method) ≤20 seconds Alkali Resistance Stable in ≤10% NaOH solution Density (25°C) 1.05~1.10 g\/cm³ Freezing Point ＜0°C Application Recommendations 1. Emulsion Polymerization: OP-4SA as a highly efficient anionic emulsifier, recommended dosage is 1.0%~4.0% of the total monomer amount. Its unique molecular structure combines the steric stabilization of nonionic segments with the electrostatic stabilization of anionic groups, providing excellent mechanical and chemical stability for systems such as styrene-acrylic, pure acrylic, and vinyl acetate-acrylic. It is recommended to be compounded with nonionic emulsifiers (such as OP series, tty alcohol polyoxyethylene ether series) at a ratio of anionic:nonionic = 1:1~3:1 to achieve optimal synergistic effects and latex particle size control. 2. Textile and Leather Processing: When used as a wetting and penetrating agent, adding 0.5%~3.0% to the working solution can significantly reduce surce tension (surce tension of 1% aqueous solution is only 30~33 mN\/m), quickly wetting fiber or leather fiber surces. Its excellent alkali resistance (stable in ≤10% NaOH solution) makes it particularly suitable for strong alkaline environments such as cotton bric alkaline scouring. The penetration power at 0.1% concentration has a canvas sedimentation time of no more than 20 seconds. 3. Metalworking Fluids and Industrial Cleaning: In cutting fluid or cleaning agent formulas, the dosage is usually 2.0%~10.0%, and it can be compounded with other surctants, rust inhibitors, extreme pressure additives, etc. Its good hard water resistance and electrolyte compatibility ensure stable performance in complex formulations. Precautions Safety Protection: This product is irritating to skin (H315) and causes serious eye irritation (H319). Protective gloves (such as nitrile rubber gloves), safety goggles, and protective clothing must be worn during operation to avoid direct contact with skin and eyes. Addition Sequence: In compounded systems, it is recommended to first disperse OP-4SA in the water phase with stirring, then add other components. If the formula contains nonionic surctants, they can be premixed and then added. Storage Temperature: Recommended storage temperature is 5°C~35°C, avoid freezing. Turbidity or stratification at low temperatures is normal; warming to room temperature and stirring evenly restores normal use without affecting performance. Environmental Control: This product is harmful to aquatic life with long-lasting effects (H412). It contains nonylphenol polyoxyethylene ether structure, which has potential environmental hormone effects. Waste liquid must not be directly discharged into water bodies or soil; it should be disposed of according to...

Question 9

In which industries and processes is OP-4SA nonylphenol polyoxyethylene ether ammonium sulfate mainly used?

Accepted Answer

OP-4SA nonylphenol polyoxyethylene ether ammonium sulte is widely used in five core industries: emulsion polymerization, textile printing and dyeing, leather processing, metalworking fluids, and industrial cleaning, serving as an efficient anionic emulsifier, wetting penetrant, and dispersant. Detailed Description OP-4SA (nonylphenol polyoxyethylene ether ammonium sulte, CAS: 9051-57-4) is a special surctant with dual characteristics of nonionic and anionic surctants. The nonionic segment in its molecular structure provides steric stabilization, while the anionic ammonium sulte group provides electrostatic stabilization, giving it excellent comprehensive performance in various industrial formulations. The product appears as a light yellow transparent liquid with good hard water resistance, electrolyte compatibility, and a wide pH range (stable from weak acid to alkaline conditions). In the field of emulsion polymerization, this product is a core emulsifier for systems such as styrene-acrylic, pure acrylic, and vinyl acetate-acrylic, effectively controlling latex particle size distribution, imparting excellent mechanical and chemical stability to the emulsion, and improving film-forming properties. In textile printing and dyeing, OP-4SA, with its excellent alkali resistance and penetrating power, is widely used in fiber pretreatment scouring, dyeing leveling, and finishing processes, significantly improving bric processing efficiency and dyeing uniformity. Furthermore, this product is used as a penetration aid in leather processing stages such as soaking, degreasing, and tanning, promoting uniform penetration of chemicals into leather fibers, improving leather softness and fullness; in metalworking fluids, it is used as an emulsifier and anti-rust additive; in industrial cleaning, it is suitable for hard surce cleaners and heavy-duty detergent formulations. Application Areas Overview Application IndustrySpecific Process/UseFunctional Role Emulsion polymerizationStyrene-acrylic, pure acrylic, vinyl acetate-acrylic, acrylate, styrene-acrylate copolymer systemsAnionic emulsifier, providing mechanical and chemical stability, controlling particle size distribution Textile auxiliariesFiber pretreatment, scouring, dyeing leveling, finishing processesWetting agent, penetrating agent, leveling agent Leather processingSoaking, degreasing, tanning, tliquoring stagesDegreasing agent, penetration aid Metalworking fluidsEmulsified cutting fluids, grinding fluids, anti-rust fluid formulationsEmulsifier, anti-rust additive, lubricating component Industrial cleaningHard surce cleaners, heavy-duty detergent formulationsWetting penetrant, emulsifying dispersant Application Suggestions In actual formulation applications, it is recommended to determine the optimal dosage through experiments based on the target system and specific process conditions. In emulsion polymerization applications, OP-4SA can achieve synergistic effects when compounded with other anionic or nonionic emulsifiers, further improving the overall performance of the emulsion. In the textile and leather fields, its excellent wetting and penetrating properties can effectively reduce the total amount of chemicals used and improve processing efficiency. The product should be thoroughly stirred before use, and after opening, it should be stored sealed to avoid prolonged exposure to air. Precautions This product is irritating to skin and eyes (H315/H319). Protective gloves and goggles should be worn during operation. Harmful to aquatic life with long-lasting effects (H412). Contains nonylphenol polyoxyethylene ether structure. Strictly control discharge and do not discharge directly into water bodies. Storage temperature is recommended to be maintained between 5°C and 35°C, avoiding freezing. Cloudiness or stratification at low temperatures is normal; after warming to room temperature and stirring evenly, it can be used normally. Shelf life is 12 months. Should be stored in a cool, dry, well-ventilated warehouse, away from heat sources and strong oxidizers.

Question 10

What are the physicochemical technical parameters of OP-4SA nonylphenol polyoxyethylene ether ammonium sulfate?

Accepted Answer

OP-4SA is a pale yellow transparent liquid, anionic surctant with active matter content ≥25%, HLB value about 13.5, and has excellent emulsifying, wetting, and alkali resistance properties. Detailed Description OP-4SA nonylphenol polyoxyethylene ether ammonium sulte (CAS number: 9051-57-4) is an anionic surctant prepared by sultion of nonylphenol polyoxyethylene (4) ether followed by neutralization with ammonium salt. Its unique molecular structure combines nonionic segments with anionic groups, giving the product outstanding emulsifying, wetting, and dispersing abilities. The product appears as a pale yellow transparent liquid with a density of 1.05~1.10 (25°C), a melting point below 0°C, and a low freezing point. Therefore, it may become turbid or stratify under low-temperature conditions, which is a normal physical phenomenon. It can be restored by warming to room temperature and stirring evenly, and the product performance is not affected. In terms of solubility and stability, OP-4SA exhibits unique "amphiphilic" properties, readily soluble in oil and water. It maintains stable performance under weak acid to alkaline conditions, and especially remains stable in ≤10% NaOH solution, demonstrating excellent alkali resistance. It is well compatible with various inorganic salts, alkalis, and other auxiliaries, showing strong system adaptability, but it decomposes upon contact with strong acids and should be avoided. Additionally, the product has high foaming characteristics, with an initial foam height of ≥150 mm in a 0.1% aqueous solution. Its critical micelle concentration (CMC) is between 0.02~0.05% (mass fraction), meaning it can form micelles at low concentrations and rapidly reduce the surce tension of the solution (surce tension of 1% aqueous solution is 30~33 mN/m). It is particularly noteworthy that the nonylphenol polyoxyethylene ether structure contained in OP-4SA is recognized as having potential environmental hormone effects, being harmful to aquatic life with long-lasting effects (H412). Therefore, during actual use and discharge, operators must strictly comply with environmental regulations to prevent any accidental release. The disposal of packaging waste must also be handled professionally according to relevant hazardous waste categories. Technical Parameters Parameter Item Technical Indicator (Data source: Guoli Chemical Database) Product NameNonylphenol polyoxyethylene (4) ether ammonium sulte Ionic TypeAnionic CAS Number9051-57-4 Molecular FormulaC23H43NO8S (average n≈4) Molecular WeightApprox. 494 AppearancePale yellow transparent liquid Solid Content25~30% Active Matter Content≥25% HLB Value13.5 Cloud PointNone 1% Aqueous Solution pH (25°C)5.0~7.0 5% Aqueous Solution pH (25°C)5.0~7.0 Density (25°C)1.05~1.10 g/cm³ Kinematic Viscosity (25% solution, 25°C)50~200 mm²/s Low Shear Viscosity (25% solution, 25°C)≤800 cP Refractive Index1.38~1.42 Flash Point>100°C Melting Point/Freezing Point HygroscopicityEasily hygroscopic Surce Tension (1% aqueous solution, 25°C)30~33 mN/m Critical Micelle Concentration (CMC)0.02~0.05% (mass fraction) Penetrating Power (0.1% aqueous solution, canvas settling method)Good (≤20 seconds) Foaming Performance (0.1% aqueous solution)High foaming (initial foam height ≥150mm) Alkali Resistance StabilityAlkali resistant (stable in ≤10% NaOH solution) Chemical StabilityStable under alkaline conditions, decomposes with strong acids SolubilityReadily soluble in oil and water Hydroxyl Value≤5 mgKOH/g Saponification Value≤5 mgKOH/g Acid Value≤3 mgKOH/g Amine Value≤2 mgKOH/g Iodine Value≤1 gI2/100g Moisture Content≤1.0% Free Alcohol≤2% Heavy Metals (as Pb)≤10 mg/kg Arsenic (As)≤2 mg/kg Application Recommendations OP-4SA has comprehensive performance and a wide range of application scenarios. Core usage suggestions are as follows: Emulsion Polymerization: As an anionic emulsifier for systems such as styrene-acrylic, pure acrylic, and vinyl acetate-acrylic, it is recommended to be used in combination with nonionic emulsifiers (such as OP series). Utilizing its high emulsification efficiency with HLB value of 13.5, it can effectively control latex particle size and improve mechanical stability. The dosage is usually 1%~3% of the total monomer amount; the exact ratio should be determined through experiments. Textiles and Leather: When used as a scouring agent or penetrant, it is recommended to add 0.5~2g/L in alkaline treatment liquor (NaOH ≤10%). Its excellent penetrating power (≤20 seconds) and alkali resistance stability can significantly improve processing efficiency while reducing total chemical consumption. Metalworking and Industrial Cleaning: When formulating emulsified cutting fluids or hard surce cleaners, it is recommended to add 5%~15% of the total formulation. Utilizing its high foaming, strong emulsifying, and hard water resistance properties, a stable and efficient concentrate can be obtained. Due to its hygroscopicity, it should be sealed immediately after opening. Precautions Safety Protection: This product causes skin irritation (H315) and serious eye irritation (H319). During operation, nitrile rubber gloves, chemical protective clothing, and goggles must be worn. Avoid inhalation of vapors or mists, and ensure good ventilation in the work environment. Environmental Control: Harmful to aquatic life with long-lasting effects (H412). The nonylphenol structure contained has potential environmental hormone effects. It is strictly prohibited to discharge the product, rinsing water, or packaging waste directly into sewers, soil, or water bodies. They must be handled by qualified professionals according to local environmental regulations.

OP-4SA Nonylphenol Ethoxylate Ammonium Sulfate

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Property	Value
CAS No.	9051-57-4
Molecular Formula	C23H43NO8S(avg.n≈4)
Appearance	Pale yellow transparent liquid
Ionic Type	Anionic
Avg. Molecular Weight	Approx. 494
Active Content	≥25%
pH Value(1%)	5.0~7.0
pH Value(5%)	5.0~7.0
Iodine Value	≤1
Solubility	Readily soluble in oils and water
Surface Tension	30~33 (1%aq. soln.,25°C)
CMC	0.02~0.05% (mass fraction)
Acid Value	≤3
Saponification Value	≤5
Hydroxyl Value	≤5
Moisture	≤1.0
Density	1.05~1.10 (25°C)
Kinematic Viscosity	50~200 (25%soln.,25°C)
Refractive Index	1.38~1.42
Flash Point	>100°C
Hygroscopicity	Readily hygroscopic
Chemical Stability	Stable under alkaline conditions; decomposes with strong acids
Amine Value	≤2
Tertiary Amine Content	≤0.5%
Penetration	Good (≤20 s, 0.1% aq., canvas disc)
Foam Property	High foam (initial ≥150 mm, 0.1% aq.)
Alkali Resistance	Alkali resistant (stable in ≤10% NaOH)
Unsaturation	Low (associated with aromatic ring)
Viscosity	≤500 mPa·s (25% aq., 25°C)
Melting Point	<0°C
Low Shear Viscosity	≤800 (25%soln.,25℃)
Solid Content	25~30%
Free Alcohol	≤2%
Heavy Metal	≤10 (as Pb, mg/kg)
Arsenic	≤2 (mg/kg)

OP-4SA Nonylphenol Ethoxylate Ammonium Sulfate

Product Details

Applications

Properties

Safety

Product Overview

Packaging and Storage

Phosphate Ester / Penetrant Applications

Product Properties

Safety

GHS

Handling

Storage

First Aid

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