Question 1

Is OP-40 octylphenol polyoxyethylene ether harmful to the human body? Does it have an impact on the environment?

Accepted Answer

OP-40 octylphenol polyoxyethylene ether has clear hazards to the human body, is extremely toxic to the aquatic ecological environment, and has long-lasting effects. Strict protection and emission control are necessary. Detailed Explanation OP-40 octylphenol polyoxyethylene ether is a nonionic surctant. Although it has excellent industrial application performance, its human toxicity and ecological toxicity cannot be ignored. According to the Safety Data Sheet (SDS), under the EU CLP regulation system, this product is classified as a chemical with clear health hazards and ecological hazards. From the perspective of human health, OP-40 primarily causes harm through three routes: skin contact, eye contact, and accidental ingestion. Skin contact can lead to irritant reactions, such as redness, swelling, and pain; eye contact can cause severe eye damage, which is a serious risk at the H318 level; ingestion can produce systemic toxic effects. During routine operations, if protective measures are inadequate or ventilation is insufficient, inhalation of its vapor or mist may also cause respiratory discomfort. Therefore, operators must be equipped with full personal protective equipment, including chemical safety goggles, chemically resistant gloves (e.g., nitrile rubber gloves), and protective clothing. From an ecological perspective, OP-40 is highly toxic to aquatic organisms (H400) with long-lasting effects (H410). This means that even extremely low concentrations can cause serious harm to fish, aquatic invertebrates, algae, etc. Moreover, this substance is not easily biodegradable in the natural environment, persisting in water bodies for a long time and continuously affecting aquatic ecosystems. Therefore, the product or its wastewater, waste liquid is strictly prohibited from being directly discharged into soil, waterways, or drainage systems. Spills and waste must be handed over to qualified professional institutions for harmless disposal. Hazard Classification Summary Hazard CategoryHazard CodeSpecific Description Acute toxicity (oral\/dermal)H302 + H312Harmful if swallowed or in contact with skin Skin corrosion\/irritationH315Causes skin irritation Serious eye damage\/eye irritationH318Causes serious eye damage Acute aquatic toxicityH400Very toxic to aquatic life Chronic aquatic toxicityH410Very toxic to aquatic life with long lasting effects Application Recommendations When using OP-40 in formulation development or industrial production, it is recommended: Strictly evaluate the necessity and minimum effective dosage of OP-40 in the formulation to avoid increased exposure risk from overuse Prioritize enclosed, automated feeding methods in the production process to reduce direct human contact Production wastewater must be effectively degraded through professional wastewater treatment systems before reaching discharge standards, and must not be directly discharged into municipal pipelines or natural water bodies While meeting performance requirements, consider APEO-free alternatives (such as tty alcohol polyoxyethylene ether series) and evaluate the feasibility of environmentally friendly substitution Precautions Key first aid principles: In case of eye contact, immediately flush with plenty of water for at least 15 minutes and seek medical attention immediately; if ingested, do NOT induce vomiting, immediately rinse mouth and drink plenty of water, then seek medical attention promptly Storage conditions: Store at temperatures between 5°C and 30°C, away from heat sources and open flames, and strictly separated from food and feed Spill disposal: For small spills, collect with sand or specialized absorbent; for large spills, construct a containment dike and immediately notify the local environmental protection department The above hazard information is based on the product SDS. For specific safe operation, please consult the complete Safety Data Sheet

Question 2

What should I do if problems occur during the use of OP-40 Octylphenol Polyoxyethylene Ether? How to obtain technical support?

Accepted Answer

If you encounter problems during use, stop the operation immediately and refer to the safety data sheet for troubleshooting; at the same time, it is recommended to contact the Technical Department of Haian Guoli Chemical Co., Ltd. for official technical support. Common troubleshooting during use OP-40, as a high-performance nonionic surctant, generally has good stability. However, if abnormalities occur, it is recommended to investigate from the following aspects: First, physical form changes. Since the melting point of OP-40 is 40~50°C, it is a paste at room temperature. If it becomes hard and difficult to use in low-temperature environments, this is a normal physical phenomenon. It is recommended to place the packaging barrel in a 25~30°C water bath for slow rewarming (avoid local overheating). Once the fluidity is restored, it can be used normally without affecting product performance. Second, instability of emulsion or formulation system, such as stratification, demulsification, precipitation, or turbidity. Please check whether the dosage is within the recommended range, whether the system pH exceeds the tolerance limit (OP-40 has good chemical stability in acid, alkali, and salt solutions, but extreme conditions still need verification), whether high water hardness introduces interfering ions, and whether the feeding sequence and stirring shear intensity are appropriate. OP-40 has an HLB value as high as 17~18, with strong hydrophilicity, suitable for O/W emulsion systems. If used in W/O systems, compounding adjustments are required. Third, poor cleaning or leveling effect, which may be related to the working solution concentration, temperature, or compatibility with additives. The cloud point of OP-40 exceeds 100°C (1% aqueous solution), making it less prone to precipitation under high-temperature conditions. However, when compounded with anionic additives, attention should be paid to charge compatibility to avoid neutral salt precipitation. It is recommended to record the operating temperature, dosage, and types of compounding agents for technician judgment. How to obtain official technical support from Guoli Chemical If the problem remains unresolved after the above troubleshooting, or if there are doubts about product quality, Haian Guoli Chemical Co., Ltd. provides professional technical support services. Please contact the business manager assigned to you or call the official service hotline of Guoli Chemical (please visit the company's official website for the latest contact information). Before contacting, it is recommended that you prepare the following information to help engineers quickly locate the problem: Product batch number and production date: Usually marked on the outer packaging woven bag or barrel label, used to trace the production batch and quality control records. Description of specific abnormal phenomena: Such as color change, stratification, odor abnormality, dissolution state, etc. It is best to attach photos or videos. Usage formula and process parameters: Including addition amount of OP-40, feeding sequence, system pH, operating temperature, water source and pretreatment method, names and dosages of other compounded additives. Storage condition verification: Confirm whether the product is stored sealed under conditions of 5°C to 30°C, cool, dry, and away from light, and whether there is any moisture ingress or impurity contamination. Based on the detailed information you provide, Guoli Chemical technicians will compare and analyze the physical and chemical indicators from the product database (such as active content ≥99%, moisture ≤0.5%, acid value ≤0.5, hydroxyl value 27.0~31.0, etc.). If necessary, they can coordinate sample re-inspection or provide targeted formulation adjustment suggestions. Technical Parameters If you need to verify product indicators yourself, please refer to the following key technical parameters of OP-40 provided by Guoli Chemical: Indicator ItemTypical Value / Specification Appearance (25℃)White to light yellow paste Active Content≥99% HLB Value17~18 pH Value (1% aqueous solution)5.0~7.0 Cloud Point (1% aqueous solution)>100°C Hydroxyl Value (mgKOH/g)27.0~31.0 Moisture≤0.5% Acid Value (mgKOH/g)≤0.5 Melting Point Range40~50℃ Safety Precautions — Emergency Response If personal injury occurs during use (skin irritation, eye contact, etc.), stop work immediately and perform first aid according to the SDS: Skin Contact: Immediately remove contaminated clothing and rinse with plenty of water and soap for at least 15 minutes. Seek medical attention if symptoms persist. Eye Contact: Immediately open eyelids and rinse with running water or saline for at least 15 minutes, and seek immediate ophthalmological medical assistance. Spill Handling: For small spills, absorb with sand or vermiculite and collect; for large spills, contain with dikes to prevent entry into drainage systems. Waste must be disposed of by qualified units. OP-40 is very toxic to aquatic life (H410), do not discharge into the environment. At all times, do not discharge untreated OP-40 or its solutions directly into water bodies or soil. In the event of a major spill or accident, immediately notify the local environmental protection department and simultaneously contact Guoli Chemical for emergency response guidance.

Question 3

How to purchase OP-40 Octylphenol Ethoxylate? What is the minimum order quantity?

Accepted Answer

Procurement of OP-40 Octylphenol Ethoxylate (CAS: 9036-19-5) can be directly coordinated with the sales team of Haian Guoli Chemical Co., Ltd. The specific minimum order quantity needs to be confirmed with the sales team; the database currently has no fixed minimum order quantity data. Detailed Explanation OP-40 Octylphenol Ethoxylate is one of the core emulsifier products of Guoli Chemical. Its chemical name is Octylphenol Polyoxyethylene (40) Ether, and it belongs to high-performance nonionic surctants. Due to its wide range of applications (covering textile printing and dyeing, pesticide formulations, emulsion polymerization, industrial cleaning, oilfield chemicals, etc.), sufficient inventory is usually maintained to meet the bulk procurement needs of customers in different industries. The daily supply form of the product is a paste (no fluidity at 25°C), packaged in 20kg woven bags for easy transportation and storage. Since OP-40 is a fine chemical raw material, its pricing is influenced by multiple ctors such as raw material market fluctuations, purchase quantity, settlement method, and transportation distance. The price in Guoli Chemical's database is only a reference basis; the actual transaction price needs to be negotiated with the sales team based on specific orders. It is recommended that you clarify your own technical index requirements (such as hydroxyl value 27.0~31.0, pH value 5.0~7.0, solid content ≥99%, and other key parameters) before placing an order, so that the sales staff can quickly match and provide accurate quotations. When ordering, please pay attention to the hazardous properties of this product—harmful if swallowed and in contact with skin (H302+H312), causes serious eye damage (H318), and is very toxic to aquatic life with long-lasting effects (H410). The purchaser must have qualifications for the operation or use of hazardous chemicals and ensure compliance with safety and environmental regulations during transportation, storage, and use. Order Contact Channels The current database does not directly include the company's contact phone numbers or online customer service portals. It is recommended that you contact Guoli Chemical through the following methods: Corporate website: Visit the official website of Haian Guoli Chemical Co., Ltd., and submit procurement requirements through the "Contact Us" page or online message board on the homepage. Corporate business information platforms: Use platforms such as Tianyancha or Qichacha to inquire about Guoli Chemical's business registration contact information and office address. Industry exhibitions and platforms: As a professional surctant manucturer, Guoli Chemical often participates in fine chemical industry exhibitions. You can also search for official stores on chemical B2B platforms (such as Guide Chem, China Chemical Network, etc.) for direct inquiries. Email inquiry: Prepare your company qualifications, required quantity, and application description, and send a formal inquiry letter via email to cilitate communication records for both parties. Technical Parameters (Reference for Pre-purchase Verification) Parameter itemIndicator value Appearance (25°C)Paste, white to light yellow, no fluidity Active content≥99% HLB value17~18 pH value (1% aqueous solution)5.0~7.0 Cloud point (1% aqueous solution)>100°C Hydroxyl value27.0~31.0 mgKOH/g Moisture content≤0.5% Density (25°C)~1.08 g/cm³ Packaging specification20kg woven bag Recommended storage temperature5°C to 30°C Application Suggestions With its HLB value as high as 17~18, OP-40 performs particularly well in oil-in-water (O/W) emulsion systems. After procurement, it can be prioritized for the following scenarios: Textile printing and dyeing: As a core raw material for high-temperature leveling agents and dispersants, it is recommended to determine the dosage based on small-scale tests according to the dyeing process. Pesticide formulations: When used in the preparation of emulsifiable concentrates and aqueous emulsions, it can be compounded with anionic emulsifiers like calcium salts to enhance emulsion stability. Emulsion polymerization: In acrylic or vinyl acetate polymerization systems, it is recommended to first conduct compatibility tests to confirm matching with the initiator and other auxiliaries. Notes Price timeliness: The database quotation was updated in June 2026 and is for trend reference only. The actual price shall be based on the formal quotation issued by the sales team on the date of contract signing. Qualification requirements: This product is a hazardous chemical. The purchasing unit must have the appropriate qualification, and transportation must be entrusted to a qualified logistics company. Minimum order quantity: Guoli Chemical's product database does not set a unified minimum order quantity. It depends on current inventory and production scheduling. Generally, larger orders can enjoy better pricing terms. Sample service: If you need to verify product performance first, you can request a small sample from the sales team for testing. After confirming it meets formulation requirements, proceed with a bulk order.

Question 4

Does OP-40 Octylphenol Polyoxyethylene Ether meet environmental requirements? Can a test report be provided?

Accepted Answer

OP-40 Octylphenol Polyoxyethylene Ether is a chemical with high toxicity to aquatic organisms. Against the backdrop of increasingly stringent environmental regulations, it poses significant environmental compliance risks, especially being strictly restricted under the EU REACH regulation and in domestic textile export fields. Detailed Explanation OP-40 Octylphenol Polyoxyethylene Ether belongs to the Alkylphenol Polyoxyethylene Ether (APEO) class of compounds. According to the Safety Data Sheet (SDS) in the Guoli Chemical product database, this product is clearly labeled with two hazard statements: H400 (Very toxic to aquatic life) and H410 (Very toxic to aquatic life with long-lasting effects). This means that once OP-40 enters the aquatic environment, it can cause significant toxic effects on fish, algae, and other aquatic organisms, is difficult to degrade naturally, and has bioaccumulation and environmental persistence. From a global regulatory trend perspective, APEO substances (including octylphenol polyoxyethylene ether and nonylphenol polyoxyethylene ether) have been included in restricted substance lists in many countries. The EU REACH regulation (EC No 1907\/2006) lists octylphenol and its ethoxylates as Substances of Very High Concern (SVHC) and sets strict limit requirements. China has also imposed restrictions on the discharge of APEO in standards such as the "Discharge Standard of Water Pollutants for Dyeing and Finishing of Textile Industry" (GB 4287-2012). If your products are destined for export markets (especially the EU and North America) or involve fields such as textiles, apparel, or daily chemicals, using OP-40 may result in the final product being non-compliant. Therefore, strictly speaking, OP-40 does not meet current green environmental requirements. Guoli Chemical has also clearly warned in the product description: "Do not discharge the product or its containers directly into soil, waterways, or drainage systems," and waste must be disposed of by qualified professional agencies. If your application scenario has high requirements for environmental compliance, it is recommended to consider environmentally friendly alternatives such as tty alcohol polyoxyethylene ether (AEO series) or isomer alcohol ethers. Guoli Chemical can provide relevant product solutions. Regarding Test Reports Currently, there is no third-party environmental test report for OP-40 available for direct viewing in the Guoli Chemical product database. If you require an SDS (Safety Data Sheet), a Certificate of Analysis (COA), or specific environmental test reports (such as APEO residue testing, heavy metal testing, etc.), it is recommended to obtain them through the following methods: Contact the Guoli Chemical sales department or official customer service to submit specific testing requirements Clarify the required test items and testing standards (such as REACH SVHC screening, RoHS testing, OEKO-TEX certification, etc.) If a report issued by a third-party testing agency is required, arrangements for sample submission can be negotiated Notes Data Source Declaration: The product toxicity and environmental information above are sourced from the Safety Data Sheet (SDS) in the Guoli Chemical product database, where the H400\/H410 hazard classification is based on the United Nations GHS system. Regarding the availability of specific test reports, the current database does not include relevant documents, and the official latest response from Guoli Chemical shall prevail.

Question 5

What are the advantages of OP-40 Octylphenol Polyoxyethylene Ether compared to other similar products?

Accepted Answer

According to Guoli Chemical's technical data, the core advantage of OP-40 Octylphenol Polyoxyethylene Ether lies in its extremely high ethylene oxide (EO) addition number, which brings excellent high-temperature stability, strong hydrophilicity, and chemical inertness in concentrated alkaline environments. This makes its performance r superior to low-addition-number OP series products in industrial applications requiring extreme conditions. Below is a detailed comparison based on product data for your reference: ### 1. Detailed Explanation of Core Advantages Compared with low-addition-number products such as OP-10 (typically EO number 10), OP-40 (EO number 40) has a longer molecular chain, which directly determines its performance differentiation: - **Extremely High Cloud Point (High-Temperature Resistance)**: The 1% aqueous solution cloud point of OP-40 is **greater than 100°C**. This means it will not precipitate and become ineffective due to the "cloud point" phenomenon in high-temperature or even boiling water environments. In contrast, low-EO-number OP series products generally have lower cloud points (e.g., OP-10 cloud point is about 60-70°C) and are prone to stratification and loss of activity in high-temperature processes. This makes OP-40 particularly suitable as a key raw material for **high-temperature leveling agents**. - **Excellent Hydrophilicity and Emulsifying Power**: Its HLB value is as high as **17-18**, making it a typical O/W (oil-in-water) emulsifier. It is significantly higher than the HLB value of OP-10 (approximately 13-14), with strong hydrophilicity, enabling more efficient emulsification, dispersion, and solubilization in aqueous systems. - **Outstanding Stability in Concentrated Alkali**: Guoli Chemical's data particularly emphasizes OP-40's "**resistance to alkali, stable in concentrated alkali**" characteristic. This advantage allows it to maintain structural stability and continuously perform cleaning functions in industrial hard surce cleaning and metal processing cleaning agents requiring high alkalinity. Low-addition-number products may suffer from reduced solubility or salting out in concentrated alkali. - **Low Foaming Property**: With a high EO addition number, OP-40 has significantly reduced foaming power and is classified as a **low-foam** surctant. This is a key performance advantage in scenarios such as industrial circulating water treatment and high-temperature high-pressure spray cleaning, reducing the need for defoamers. - **Higher Safety and Operational Convenience**: OP-40 appears as a **paste** at 25°C, with a flash point **above 200°C**, making it non-flammable and very low in volatility. Compared with some low-addition-number liquid products (which have relatively lower flash points), it offers higher safety during high-temperature use. ### 2. Key Performance Parameter Comparison | Performance Indicator | OP-40 (Guoli Chemical) | Common Industry OP-10 | Comparative Advantage Interpretation | | :--- | :--- | :--- | :--- | | **HLB Value** | **17-18** | ~13-14 | OP-40 has extremely strong hydrophilicity, making it a more efficient emulsifier and solubilizer in aqueous systems. | | **Cloud Point (1% aq.)** | **>100°C** | ~60-75°C | **Core advantage**. OP-40 can be used stably in boiling water and high-temperature processes without stratification. | | **Concentrated Alkali Stability** | **Stable** | Moderate/Unstable | **Key advantage**. It can remain active in high-concentration alkaline cleaning agents. | | **Foam Characteristics** | **Low foam** | Medium to high foam | Reduces foam problems in industrial cleaning applications such as circulating water and spraying. | | **Form (25°C)** | **Paste** | Liquid | The paste form cilitates compounding with other solid raw materials, with no dripping during operation. | | **Surce Tension** | **30~35 mN/m** | ~30-35 mN/m | Both have excellent wetting and penetrating capabilities, with comparable performance. | | **Active Content** | **≥99%** | ≥99% | Very high content ensures sufficient active ingredients. | | **Hydroxyl Value** | **27.0~31.0** | ~85-90 | The lower the hydroxyl value, the higher the EO addition number and the stronger the hydrophilicity, fully consistent with the HLB value data. | ### 3. Application Selection Recommendations Based on Guoli Chemical's technical data, we recommend selecting according to the following application scenarios: - **Scenarios for Choosing OP-40**: - **High-temperature leveling agent**: In high-temperature high-pressure dyeing of polyester and other synthetic fibers, the auxiliary must continuously work during heating and holding stages. - **Strong alkaline cleaning agent**: For heavy-duty cleaning of beer bottles, aluminum processing parts, and metal components. - **High-temperature emulsion polymerization**: Emulsifiers must maintain emulsion stability during polymerization exothermic processes and external heating. - **Pesticide emulsion in water (EW) or suspension emulsion (SE)**: Providing efficient emulsification for highly hydrophilic pesticide active ingredients. - **Applications requiring low foam**: Such as high-temperature high-pressure spray cleaning systems. - **Alternative Reference**: If you need a product that is liquid at room temperature, you can try melting OP-40 before use or consult Guoli Chemical's technical team, who may provide a solution with a specific form or formulation from the same series. In summary, OP-40 sacrifices certain low-temperature fluidity in exchange for **unparalleled high-temperature and strong alkali tolerance and excellent hydrophilic emulsification ability**. It is a high-performance, specialized product from Guoli Chemical for specific industrial applications.

Question 6

How to store OP-40 Octylphenol Polyoxyethylene Ether? What is its shelf life?

Accepted Answer

OP-40 Octylphenol Polyoxyethylene Ether should be stored in a cool, dry, well-ventilated warehouse (5°C to 30°C), keeping the container tightly closed; the specific shelf life shall be subject to the product label. Under recommended conditions, unopened original packaging can typically be stored stably for 1-2 years. Detailed Description OP-40 Octylphenol Polyoxyethylene Ether is a nonionic surctant with relatively stable chemical properties, but storage conditions directly affect its quality and performance. According to the product safety data sheet provided by Guoli Chemical, this product should be stored in a dedicated warehouse that is cool, dry, and well-ventilated, away from heat sources, sparks, and open flames. The container must be kept tightly closed to avoid contact with moisture or impurities in the air. The storage temperature is recommended to be strictly controlled between 5°C and 30°C, avoiding extreme temperature fluctuations. Temperatures that are too low may cause the product's viscosity to increase or even lead to cloudiness or solidification, while excessive temperatures may accelerate product oxidation or degradation, affecting emulsifying performance and detergency. Additionally, the product should be protected from direct sunlight and moisture, as UV exposure and water ingress can cause product deterioration. Storage Condition Requirements Storage ParameterSpecific Requirement Storage Temperature5°C to 30°C (recommended range, avoid extreme temperature changes) Environmental RequirementCool, dry, and well-ventilated Container ConditionKeep tightly closed, preferably in original container Keep Away FromHeat sources, sparks, open flames, direct sunlight Isolated StorageStrictly separate from oxidizing agents, strong acids, strong bases, food, and feed Leak Prevention cilityEquip with spill containment berms or trays, away from drainage systems and water bodies Packaging FormClean, dry drums or IBC totes Shelf Life Explanation According to data from Guoli Chemical, under recommended storage conditions, unopened original packaging products can maintain stable quality within the shelf life indicated on the label. The specific shelf life shall be based on the product label. Generally, nonionic surctant products, when stored correctly in unopened original packaging, have a typical shelf life of 1-2 years from the date of manucture. It is recommended to follow the principle of "best used within the shelf life if the original container remains unopened." Once opened, the product should be used as soon as possible, and the container should be immediately resealed after each use to minimize exposure to air. Precautions Do not discharge the product or its container directly into soil, waterways, or drainage systems to prevent toxic hazards to aquatic organisms (H410). Emergency shower equipment and eyewash stations should be installed in the storage area and kept in working condition. If the product exceeds the shelf life stated on the label, performance testing should be conducted before use to confirm that key indicators such as emulsification and dispersion still meet requirements. If a product that has been opened and stored for a long time shows abnormal phenomena such as stratification, cloudiness, or off-odors, it should be discontinued and disposed of by a professional agency. Waste products and packaging must be handled in accordance with hazardous waste management regulations and sent to qualified professional agencies for recycling or disposal.

Question 7

What safety precautions should be taken when using OP-40 Octylphenol Ethoxylate?

Accepted Answer

OP-40 Octylphenol Ethoxylate is a hazardous chemical and must be strictly protected during use. It is severely irritating to the skin and eyes, harmful if swallowed or in contact with skin, and extremely toxic to aquatic life. Detailed Description OP-40 Octylphenol Ethoxylate (CAS number: 9036-19-5) is a high-performance nonionic surctant. Although it has excellent chemical stability and a wide range of applications, its hazards cannot be ignored. According to the Safety Data Sheet (SDS), this product has clear health hazards and ecological toxicity: H302+H312 (Harmful if swallowed or in contact with skin), H315 (Causes skin irritation), H318 (Causes serious eye damage), H400 (Very toxic to aquatic life), and H410 (Very toxic to aquatic life with long-lasting effects). Therefore, it must never be taken lightly in industrial use. Operators must wear compliant chemical safety goggles or ce shields, chemically resistant protective gloves (e.g., nitrile rubber gloves) and protective clothing to avoid direct contact with skin and eyes. The workplace should be well-ventilated; if ventilation is insufficient, respiratory protective equipment must be worn. Eating, drinking, or smoking is strictly prohibited in the operating area. When handling, actions should be gentle to avoid generating aerosols or splashes. The workplace should also be equipped with emergency showers and eyewash stations, ensuring they are always ready for use. This product poses a particular threat to the ecological environment. It is strictly forbidden to discharge it directly into water bodies, soil, or drainage systems without treatment. Any spill must be collected using inert absorbent materials (e.g., sand, vermiculite) and disposed of by qualified professional agencies. Even during storage, it should be kept away from drainage systems and groundwater channels, and equipped with spill containment measures (e.g., dikes or trays) to prevent accidental release into the environment. Key Points for Safe Operation Protection Category Specific Requirements Remarks Eye Protection Chemical safety goggles or ce shield H318: Causes serious eye damage, must be strictly protected Hand Protection Chemically resistant gloves such as nitrile rubber H315: Causes skin irritation; H312: Harmful in contact with skin Body Protection Protective clothing, store work clothes separately and wash regularly Thoroughly clean exposed skin after operation Respiratory Protection Wear respiratory protective equipment if ventilation is insufficient Avoid inhaling vapors or mists Environmental Protection Do not discharge into waterways or soil; collect spills with absorbent materials H400/H410: Very toxic to aquatic life Emergency Treatment Guidelines Skin Contact: Immediately remove contaminated clothing and rinse skin with plenty of water and soap for at least 15 minutes. Seek medical attention if redness or persistent irritation occurs. Contaminated clothing must be thoroughly washed before reuse. Eye Contact: Immediately rinse with plenty of running water or saline solution for at least 15 minutes, holding eyelids apart and rotating the eyeball. Do not rub. After rinsing, seek immediate professional ophthalmological medical assistance without delay. Ingestion: Do NOT induce vomiting! Rinse mouth thoroughly with water. If the victim is conscious, they may drink a small amount of water to dilute. Immediately bring the product label or SDS to the doctor, informing them of the substance ingested and the approximate amount. Spill Handling: For small spills, cover with sand or vermiculite and collect. For large spills, cordon off the area, build dikes to prevent spread to drainage systems, and dispose of contaminated material through qualified professional agencies after cleanup. Storage Conditions Requirements Store in a cool, dry, well-ventilated dedicated warehouse, away from heat sources, sparks, and open flames Recommended storage temperature between 5°C and 30°C, avoiding extreme temperature changes Keep container tightly closed, avoid direct sunlight and moisture Store separately from oxidizing agents, strong acids, strong bases, food, and feed Storage area equipped with spill containment cilities (dikes or trays), away from drainage systems and water sources Special Warning OP-40 is extremely toxic to aquatic life with long-lasting effects. Under no circumstances should the product or its container be discharged directly into the environment. Waste products and packaging must be disposed of by licensed professional units with appropriate hazardous waste management permits in accordance with national and local hazardous waste management regulations. If a spill reaches water bodies or soil, immediately notify the local environmental protection department and cooperate with emergency monitoring and disposal. Before use, carefully read the complete Safety Data Sheet (SDS) and strictly follow all safety operating procedures.

Question 8

How to use OP-40 Octylphenol Polyoxyethylene Ether? What is the recommended dosage?

Accepted Answer

OP-40 Octylphenol Polyoxyethylene Ether is a nonionic surctant with a high HLB value (17-18), usually supplied in paste form. It is recommended to add it directly under stirring or pre-dissolve it in warm water before use; its recommended dosage varies depending on the specific application, generally between 0.5% and 10%, with the optimal dosage determined through small-scale experiments. Detailed Description OP-40 Octylphenol Polyoxyethylene Ether (CAS: 9036-19-5) is a white to light yellow paste at room temperature (25°C), non-flowable, with a melting point of approximately 40~50°C. As a high-performance oil-in-water (O/W) emulsifier, it is highly soluble in water, chemically stable, and can be used in acidic, alkaline, and hard water media. In practical operation, due to its paste form, directly weighing and adding it to the formulation system with slight heating (about 40~50°C) or pre-dissolving it in warm water before stirring and mixing is the recommended method of use, ensuring rapid and uniform dispersion in the solution. This product has excellent emulsifying, dispersing, and detergency capabilities, with an HLB value as high as 17-18, indicating strong hydrophilicity. When used as an emulsifier, it can efficiently reduce the oil/water intercial tension and stabilize the emulsion. When compounded with other surctants (such as anionic types), it often exhibits synergistic effects, enhancing the salt resistance, alkali resistance, and dispersing performance of the overall formulation. Since its cloud point r exceeds 100°C (1% aqueous solution), it is particularly suitable for high-temperature and high-pressure dyeing processes in the textile printing and dyeing industry, without precipitation or ilure due to excessive temperature. Regarding the recommended dosage, due to the extremely wide range of industrial applications of OP-40—from textile printing and dyeing auxiliaries to pesticide emulsification, emulsion polymerization, and industrial cleaning—the exact amount depends on the specific oil phase type, desired effect, and synergistic interactions with other components in the system. Therefore, Guoli Chemical recommends users to use it as a reference for initial formulation and ultimately determine the most economical and effective dosage suitable for their own process conditions through gradient experiments. Recommended Dosage Reference The following is a recommended dosage range summarized based on Guoli Chemical's years of application experience (by total formulation weight). The specific values need to be verified through user experiments: Application FieldRecommended Dosage (wt%)Function and Description Emulsion Polymerization1.0% ~ 4.0%Used as primary emulsifier, combined to prepare stable acrylate or VAE emulsions, providing excellent mechanical and chemical stability. Pesticide Emulsification2.0% ~ 8.0%Compounded for emulsifiable concentrates (EC) or oil-in-water emulsions (EW), efficiently emulsifying organic solvents and active ingredients, enhancing the spreading ability of the spray liquid. Textile Printing and Dyeing Auxiliaries5.0% ~ 10.0%Used as base material or auxiliary dispersant in high-temperature leveling agents or pretreatment scouring agent composite formulations. Industrial and Household Cleaning0.5% ~ 3.0%In metal processing cleaners or hard surce cleaner formulations, exhibiting excellent detergency and dispersing effects on mineral oils and greases. As General O/W Emulsifier1.0% ~ 5.0%Used for emulsification of general vegetable oils, mineral oils, or solvents, dosage depends on the characteristics of the oil phase. Key Parameter Reference When using, pay attention to the following key indicators to ensure compliance with process requirements: Parameter NameTypical Value/SpecificationImpact on Application Appearance (25°C)White to light yellow pasteNeeds to be warmed or diluted before feeding to ensure uniform mixing. HLB Value17 ~ 18Extremely hydrophilic, suitable as O/W type emulsifier. Cloud Point (1% Aqueous Solution)> 100°CDoes not become turbid or separate in high-temperature systems. Active Content≥ 99%High active content, should be considered when calculating actual dosage. pH Value of 1% Aqueous Solution5.0 ~ 7.0Nearly neutral, good compatibility with systems sensitive to pH. Foam CharacteristicsLow foamingSuitable for industrial cleaning or textile processing processes requiring foam control. Application Suggestions We recommend users follow the below operation procedures when using OP-40 to achieve optimal results: 1. Small-scale verification: Combine with other components in the formulation (anionic/nonionic/cationic surctants, builders, solvents, etc.), prepare proportionally in a small beaker, test compatibility, transparency, emulsifying power, and stability at different temperatures. 2. Feeding method: When taking OP-40 from the packaging, due to its paste form, use specialized tools. Add to deionized water or process water, heat to 40~50°C, stir until completely dispersed and dissolved, then add oil phase and other auxiliaries. 3. Synergistic compounding: If used to enhance cleaning or emulsifying performance, combine with a small amount of low HLB value nonionic surctants (e.g., O-5, O-10, etc.) or synergize with anionic surctants, often achieving better results beyond theoretical HLB value predictions. Precautions Safety warnings: This product is harmful if swallowed or in contact with skin (H302+H312), causes serious eye damage (H318). Wear protective goggles and chemical-resistant gloves such as nitrile when handling. In case of eye contact, immediately flush with plenty of water for at least 15 minutes and seek medical attention quickly. Environmental hazards: Very toxic to aquatic life (H400/H410), do not discharge into drains or water bodies, waste must be disposed of by qualified units. Storage requirements: Keep sealed in a cool, dry place at 5°C ~ 30°C, away from fire sources, avoid moisture. Use promptly after opening. Feeding restrictions: Avoid direct inhalation of vapors or mists that may be generated during heating, ensure operation in a well-ventilated area.

Question 9

In which industries and processes is OP-40 Octylphenol Polyoxyethylene Ether mainly applied?

Accepted Answer

OP-40 Octylphenol Polyoxyethylene Ether is a versatile nonionic surctant, mainly applied in seven major industry sectors: textile printing and dyeing, pesticide formulations, emulsion polymerization, industrial cleaning, oilfield chemicals, leather processing, and papermaking. Detailed Description OP-40 Octylphenol Polyoxyethylene Ether (CAS No.: 9036-19-5) is a high-performance nonionic surctant launched by Guoli Chemical. With its excellent emulsifying, dispersing, and detergency capabilities, it is widely used as a key functional additive in many industrial fields. This product has excellent chemical stability, can withstand certain concentrations of acid, alkali, and hard water environments, and can be compounded with nonionic, anionic, and cationic auxiliaries, making it a reliable general-purpose component in complex formulation systems. The core function of OP-40 lies in its outstanding surce activity performance, enabling efficient preparation and stabilization of oil-in-water (O/W) emulsions, significantly reducing intercial tension even at low dosages. At the same time, it has excellent dispersing, suspending, and detergency effects on various solid particles and oil stains, maintaining stable performance under high-temperature and high-shear conditions, making it an indispensable core raw material in many industrial formulations. Below is a detailed explanation of the specific application roles and functions of OP-40 in various processes by industry. Industry Applications and Process Details Industry Field Application Process/Role Functional Description Textile & Dyeing High-temperature leveling agent, dispersant, detergent Used as a key raw material for high-temperature leveling agents and dispersants, improving dyeing uniformity and preventing dye aggregation; also used as a detergent to effectively remove impurities and excess dyes from bric surces Pesticide Formulations Emulsifier, synergist Used to prepare stable emulsifiable concentrates (EC), emulsion in water (EW), etc., enhancing the wetting and spreading ability of the spray liquid on plant leaves to improve efficacy Emulsion Polymerization Primary emulsifier, stabilizer Applied in emulsion polymerization of systems such as acrylates and vinyl acetate, imparting excellent mechanical and chemical stability to the emulsion, ensuring uniform particle size Industrial & Domestic Cleaning Metalworking cleaning agent, hard surce cleaner, liquid detergent Suitable for metalworking fluids, industrial hard surce cleaning, and domestic liquid detergent formulations, with excellent removal effect on heavy soil and oil stains Oilfield Chemicals Emulsion viscosity reducer, dispersant Used in emulsion viscosity reduction processes in oilfield extraction to improve the flowability of heavy crude oil; also plays a dispersing and stabilizing role in drilling fluids Leather Processing Degreasing agent Used as a degreasing agent in the pre-treatment stage of leather processing, effectively removing natural ts from raw hides, creating vorable conditions for subsequent tanning processes Papermaking Industry Deinking agent, dispersant Plays a key role in waste paper recycling deinking processes, helping ink particles detach from fiber surces and remain suspended and dispersed, preventing ink redeposition Application Recommendations When using OP-40 for formulation design, it is recommended to adjust the dosage according to specific process requirements: when used as the primary emulsifier for O/W emulsion systems, the recommended dosage is usually 2% to 10% of the oil phase weight; in textile leveling agent formulations, the recommended dosage is 0.5 to 3 g/L of the working solution; in pesticide emulsifiable concentrate formulations, the usual addition amount is 5% to 15% of the total formulation. Due to its excellent acid, alkali, and hard water resistance, OP-40 can maintain stable usage effects within the pH range of 3 to 11, especially suitable for harsh process conditions such as high-temperature dyeing (130°C). OP-40 can be compounded with various surctants. Compounding with anionic surctants (e.g., LAS, AES) can produce synergistic effects, further enhancing emulsifying and detergency performance. In emulsion polymerization, it is recommended to use it in conjunction with anionic emulsifiers (e.g., sodium dodecyl sulte) to achieve better emulsion stability. Precautions Safety Warning: OP-40 is harmful if swallowed and in contact with skin (H302+H312), causes skin irritation (H315) and serious eye damage (H318), is very toxic to aquatic life with long-lasting effects (H410). When handling, must wear chemical safety goggles, protective gloves, and work clothes, ensuring good ventilation in the workplace. Do not discharge the product or its containers directly into soil, waterways, or drainage systems. Waste must be disposed of by qualified professional agencies. Storage Conditions: Should be stored in a cool, dry, well-ventilated warehouse; recommended storage temperature is between 5°C and 30°C; keep containers tightly closed, away from heat sources and ignition sources, avoid direct sunlight and moisture.

Question 10

What are the physicochemical technical parameters of OP-40 Octylphenol Polyoxyethylene Ether?

Accepted Answer

OP-40 Octylphenol Polyoxyethylene Ether is a nonionic surctant with a high HLB value (17-18), featuring excellent water solubility, high-temperature resistance, and chemical stability, with balanced overall performance. Technical Parameters The detailed physicochemical technical parameters of OP-40 Octylphenol Polyoxyethylene Ether (CAS: 9036-19-5) are summarized as follows, with data derived from the Guoli Chemical Product Database, categorized into basic physicochemical indicators and special surce activity indicators. Basic Physicochemical Indicators Parameter NameTechnical Indicator Product Full NameOctylphenol Polyoxyethylene (40) Ether Appearance (25℃)White to light yellow paste, non-flowable Ionic TypeNonionic Molecular FormulaC94H182O41 Molecular Weight~1968 Active Content≥99% Water Content≤0.5% pH Value (1% and 5% Aqueous Solution)5.0 ~ 7.0 Density (25℃)~1.08 g\/cm³ Kinematic Viscosity (25℃, paste)~2000 mm²\/s Low Shear Viscosity (25℃)~5000 mPa·s Melting Point40 ~ 50℃ Refractive Index (20℃)1.48 ~ 1.49 Flash Point>200℃ HygroscopicitySlightly hygroscopic SolubilityEasily soluble in water Chemical StabilityStable in acid, alkali, and salt solutions Heavy Metals≤10 mg\/kg Arsenic≤2 mg\/kg Special Surce Activity Indicators Parameter NameTechnical Indicator HLB Value17 ~ 18 Cloud Point (1% Aqueous Solution)>100℃ Hydroxyl Value27.0 ~ 31.0 mgKOH\/g Acid Value≤0.5 mgKOH\/g Amine Value≤0.5 mgKOH\/g Iodine Value≤1 gI2\/100g Saponification Value≈0 Surce Tension (1% Aqueous Solution, 25℃)30 ~ 35 mN\/m Critical Micelle Concentration (CMC)0.8 ~ 1.0 mmol\/L Foam CharacteristicsLow foaming Alkali ResistanceAlkali-resistant, stable in concentrated alkali Free Alcohol Content≤0.5% UnsaturationNone Penetration PowerNo standard test data available Application Recommendations The extremely high HLB value (17-18) endows OP-40 with excellent water solubility and O\/W emulsifying ability. Its cloud point exceeds 100℃, making it particularly suitable for high-temperature emulsion polymerization and high-temperature leveling processes in textile dyeing and printing. Additionally, its low foaming characteristics make it an ideal component for industrial circulating water cleaning and metalworking fluids. Precautions This product is a paste at 25℃ with high viscosity (low shear viscosity approximately 5000 mPa·s). For pumping or pouring, it is recommended to preheat the product to 45~55℃ until it transforms into a liquid. Although chemical stability is excellent, when formulating in highly acidic systems (pH This product is an environmentally regulated nonionic surctant (APEO). Please strictly follow the latest environmental regulations for use and declaration.

OP-40 Octylphenol Ethoxylate

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Property	Value
CAS No.	9036-19-5
Molecular Formula	C8H17C6H4O(CH2CH2O)40H, i.e. C94H182O41
Appearance	White to pale yellow
Ionic Type	Nonionic
Avg. Molecular Weight	~1968
Cloud Point	>100°C (1%aq. soln.)
Active Content	≥99
pH Value(1%)	5.0~7.0
pH Value(5%)	5.0~7.0
Iodine Value	≤1
Solubility	Readily soluble in water
Surface Tension	30~35 mN/m (1%aq. soln., 25°C)
CMC	0.8~1.0 mmol/L
Acid Value	≤0.5
Saponification Value	≈0
Hydroxyl Value	27.0~31.0
Moisture	≤0.5
Density	~1.08 g/cm³ (25°C)
Kinematic Viscosity	~2000 mm²/s (25°C, paste)
Refractive Index	1.48~1.49 (20°C)
Flash Point	>200°C
Hygroscopicity	Slightly hygroscopic
Chemical Stability	Stable in acid, alkali and salt solutions
Amine Value	≤0.5
Tertiary Amine Content	≤0.1
Penetration	None (standard test)
Foam Property	Low foam
Alkali Resistance	Alkali resistant; stable in concentrated alkali
Viscosity	Paste, no flow at 25°C
Melting Point	40-50°C
Low Shear Viscosity	~5000 mPa·s (25℃)
Solid Content	≥99%
Free Alcohol	≤0.5%
Heavy Metal	≤10 mg/kg
Arsenic	≤2 mg/kg