Question 1

Is OP-10 octylphenol ethoxylate harmful to the human body? Does it have an impact on the environment?

Accepted Answer

OP-10 octylphenol ethoxylate has low toxicity to humans, mainly manifested as harmful if swallowed, skin and eye irritation; it is harmful to aquatic life with long-lasting effects, and is a chemical that requires careful control. Detailed Description Under normal industrial use conditions, OP-10 (octylphenol ethoxylate) is a low-toxicity nonionic surctant. Its acute oral toxicity (rat LD50) is approximately 1800 mg/kg (GHS acute toxicity oral category 4), and it does not cause severe acute poisoning reactions. However, upon direct contact, this product has clear local irritant effects on humans: rabbit skin tests show mild to moderate irritation (GHS skin corrosion/irritation category 2), and eye contact can cause severe eye irritation (GHS serious eye damage/eye irritation category 2). Based on existing toxicological data, this product is not classified as a reproductive toxicant or a specific target organ toxicant. In terms of environmental impact, the effect of OP-10 on aquatic ecosystems cannot be ignored. The 96-hour median lethal concentration (LC50) for fish is approximately 3–10 mg/L, and the 48-hour median effect concentration (EC50) for daphnia is less than 10 mg/L, lling under GHS aquatic chronic toxicity category 3. This means that even low concentrations can be harmful to aquatic organisms, and its degradation intermediates (such as octylphenol) have some persistence in the environment, potentially causing bioaccumulation and endocrine disruption. Therefore, direct discharge into water bodies, soil, or public drainage systems without treatment is strictly prohibited. Overall, OP-10 can be used safely under standardized operations with proper personal protection and environmental measures, but safety operation procedures and waste disposal requirements must be strictly followed. For users seeking more environmentally friendly alternatives, alcohol ether surctants with better biodegradability can be considered. Safety and Toxicity Parameter Summary ParameterValue / ConclusionGHS Classification Acute Oral Toxicity (Rat LD50)Approx. 1800 mg/kg, low toxicityCategory 4 (Harmful if swallowed) Skin Irritation (Rabbit)Mild to moderate irritationCategory 2 (Skin irritant) Eye Irritation (Rabbit)Can cause severe eye irritationCategory 2 (Serious eye irritation) Reproductive ToxicityNot classified based on available data— Fish 96h-LC50Approx. 3–10 mg/L— Daphnia 48h-EC50<10 mg/L— Aquatic Chronic ToxicityHarmful to aquatic life with long-lasting effectsCategory 3 Flash Point (Closed Cup)>200°C (typical value approx. 250°C)Not flammable BiodegradabilityDegradation products may persistDischarge control required Application Recommendations Given the toxicological and ecotoxicological properties of OP-10, special control measures are needed in the following application scenarios: Industrial Cleaning Formulations: Operators must wear nitrile rubber gloves, chemical safety goggles, and protective clothing; the work area should have good ventilation. Textile Printing and Dyeing Auxiliaries: Wastewater containing OP-10 from textile processing must be treated by professional wastewater treatment systems and cannot be discharged directly. Pesticide Emulsifiers: When used as a pesticide adjuvant, attention should be paid to its potential risk to non-target aquatic organisms. Metalworking Fluids: Waste liquids generated during use should be collected and disposed of by a qualified hazardous waste treatment cility. Household Cleaning Products: Due to its environmental persistence, some countries and regions have gradually restricted the use of OP-type surctants in household cleaning products; local regulations should be monitored. Precautions After skin contact, rinse immediately with plenty of water and mild soap for at least 15 minutes; seek medical attention if irritation persists. After eye contact, keep eyelids open and rinse continuously for at least 20 minutes; seek immediate ophthalmological treatment. If swallowed accidentally, do not induce vomiting; drink 200–300 mL of water to dilute and seek medical attention immediately. Absorb spilled material with inert materials such as sand or vermiculite for collection; do not flush into drainage systems. Storage temperature is recommended between 5°C and 40°C; use stainless steel or HDPE containers; keep away from strong oxidizing agents. Empty containers may contain product residues; handle with the same safety standards and do not discard arbitrarily. Report major spills to local environmental authorities immediately to prevent pollution spread.

Question 2

What should I do if problems occur during the use of OP-10 octylphenol polyoxyethylene ether? How to obtain technical support?

Accepted Answer

When problems occur during the use of OP-10, it is recommended to first check common process and formulation ctors. If the problem cannot be resolved, you can directly contact Haian Guoli Chemical Co., Ltd. for professional technical support. Detailed Explanation OP-10 octylphenol polyoxyethylene ether, as a mature nonionic surctant, is relatively stable under normal use conditions. However, in practical applications, problems are mostly seen in three aspects: improper formulation compatibility, deviation in operating conditions, and abnormal storage environment. For example, the cloud point effect (cloud point of OP-10 is about 65-70°C) may cause precipitation and stratification in high-temperature systems; improper compounding ratio with anionic additives may weaken synergistic effects; long-term exposure to humid environments may cause moisture absorption and deterioration of the product. When encountering issues such as unsatisctory emulsification effect, reduced cleaning power, turbidity or stratification of the system, it is recommended to check according to the following steps: ① Confirm whether the product is within the shelf life and stored under compliant conditions (5°C-40°C, sealed and moisture-proof); ② Check whether the operating temperature exceeds the cloud point range of OP-10; ③ Review the interference of other components (especially strong electrolytes, strong acids and bases) in the formulation on the nonionic surctant; ④ Verify whether the feed ratio and addition sequence are consistent with the process requirements. If the problem is still not resolved after the above checks, Guoli Chemical provides multi-level technical support services. See below for specific ways to obtain them. Common Problems and Troubleshooting Directions Problem PhenomenonPossible CausesSuggested Troubleshooting Directions Unstable emulsion, oil-water separationHLB value mismatch, insufficient dosage, improper temperatureConfirm the HLB value required by the oil phase; adjust the dosage of OP-10 (usually 5%-15% of the weight of the oil phase); control the emulsification temperature Turbidity or precipitation in high-temperature systemsOperating temperature exceeds the cloud pointReduce the operating temperature to below 65°C, or compound with anionic surctant to increase the cloud point Unsatisctory cleaning effectLow concentration, insufficient contact time, improper compatibilityIncrease the working solution concentration (recommended 0.5%-5%); prolong the action time; combine with alkaline additives to enhance detergency Discoloration or stratification of product appearanceExcessive storage temperature, moisture absorption, exceeding shelf lifeCheck storage environment; confirm container sealing; replace with a new batch of product Excessive foaming affecting the processOP-10 itself has high foam, high system flow rateAdd defoamer (silicone type or polyether type); reduce the mixing and stirring speed Skin irritation or operational discomfortilure to wear protective equipment properlyImmediately perform emergency treatment according to SDS; properly wear nitrile gloves, goggles and other protective gear How to Obtain Technical Support from Guoli Chemical 1. Consult Product Technical Data First, you can consult the product technical data sheet (TDS) and safety data sheet (SDS) provided with the shipment, which contain detailed physicochemical parameters, application guidance, and emergency treatment methods. At the same time, you can visit the product page on the official website of Guoli Chemical to obtain the latest technical data and application cases. 2. Contact Sales Manager or Regional Representative Directly contact the sales manager or regional business representative serving you. They usually have rich industry application experience and can quickly respond to actual needs such as formulation adjustment and process optimization. If necessary, they can coordinate the technical team for on-site service. 3. Call the Technical Service Hotline Submit the problem via the official technical service hotline of Haian Guoli Chemical Co., Ltd. Please prepare the following information in advance for efficient communication: product batch number, formulation system used, operating process conditions (temperature, pH, concentration, etc.), specific description of the problem, and sample photos. 4. Send Samples for Testing and Analysis For complex problems, Guoli Chemical can provide sample testing services. Send the problematic sample together with the product batch number and usage description to the company's technical center. The laboratory will conduct physicochemical index testing and application simulation experiments, and issue an analysis report and solution. 5. On-site Technical Support For important customers or difficult process issues, Guoli Chemical can dispatch technical engineers to the site for process diagnosis, formulation optimization, and equipment debugging guidance, helping customers quickly resume normal production. Precautions When contacting technical support, be sure to provide the product batch number (located on the packaging drum label), which is the key basis for tracing product quality information If personal injury is involved (such as skin burns, eye irritation, etc.), prioritize the emergency treatment measures in the SDS and seek medical attention promptly, then contact the company to report the situation If a leakage or environmental pollution accident occurs, immediately follow the leakage treatment procedures in the SDS to prevent discharge into sewers or water bodies, and notify local environmental protection authorities It is recommended to establish a product usage record, documenting the formulation, process conditions, and effects of each batch of products, to cilitate quick tracing in case of problems Technical consultation is generally free of charge, but on-site travel services may be negotiated based on actual conditions. The specific details are subject to mutual agreement.

Question 3

How to purchase OP-10 Octylphenol Polyoxyethylene Ether? What is the minimum order quantity?

Accepted Answer

According to the technical data of Guoli Chemical, regarding the purchase method and minimum order quantity of OP-10 Octylphenol Polyoxyethylene Ether, the product database I have queried currently only contains the technical parameters, performance characteristics, application fields, and safety information of this product, without involving business policies and procurement process data. **We recommend that you obtain accurate purchasing information through the following methods:** 1. **Contact the sales department of Guoli Chemical directly** You can call the official sales hotline of Hai'an County Guoli Chemical Co., Ltd. or visit their corporate website to inquire about the real-time price, minimum order quantity (MOQ), delivery time, and logistics plan for OP-10. The minimum order quantity for chemical raw materials usually varies depending on the packaging specifications (such as 200kg drums, 1000kg IBC totes, etc.). 2. **Follow the company's official channels** Visit the Guoli Chemical website, check the "Contact Us" or "Product Center" page, where you will usually find contact information for regional sales managers or an online inquiry form to submit your purchasing requirements directly. **Technical support we can provide:** Before you contact the purchasing department, if you need to confirm whether OP-10 is suitable for your application scenario (such as cleaning agents, textile auxiliaries, pesticide emulsifiers, etc.), or need to know detailed physical and chemical indicators (such as cloud point, HLB value, etc.), I can continue to provide professional technical answers for you.

Question 4

Is OP-10 octylphenol polyoxyethylene ether compliant with environmental requirements? Can a test report be provided?

Accepted Answer

OP-10 octylphenol polyoxyethylene ether has clear environmental restrictions: it is harmful to aquatic life with long-lasting effects (GHS Aquatic Chronic Category 3), is not a green environmentally friendly surctant, and has been strictly regulated in regions such as the EU. Detailed Description OP-10 (octylphenol polyoxyethylene ether) belongs to the class of alkylphenol polyoxyethylene ethers (APEOs), which are nonionic surctants. The core environmental controversy of these substances is that their degradation intermediates in the environment—octylphenol (OP) and short-chain polyoxyethylene ether metabolites—are recognized as environmental endocrine disruptors (EDCs) with estrogenic effects. They can persist in water bodies, accumulate through the food chain, and cause long-term harm to the reproductive functions of fish, aquatic invertebrates, and even entire ecosystems. According to the Safety Data Sheet in the Guoli Chemical product database, the aquatic ecotoxicity data for OP-10 are: fish 96h-LC50 approximately 3–10 mg/L, daphnia 48h-EC50 less than 10 mg/L. According to the GHS classification criteria, it is clearly classified as Aquatic Chronic Category 3 (H412) — "harmful to aquatic life with long-lasting effects." This classification means that even with diluted discharge, its cumulative effects cannot be ignored. Currently, the EU REACH regulation has listed octylphenol (4-tert-octylphenol) in the Candidate List of Substances of Very High Concern (SVHC) and imposes strict restrictions on its content in articles; EU Regulation 2016/26 further restricts residues of NPEO and OPEO in textile products. Domestically, although not completely banned, standards such as GB/T 35613-2017 "Green Product Assessment - Textile Products" have explicitly restricted the use of APEOs. Export-oriented companies need to pay special attention to compliance risks. Therefore, OP-10 is not recommended for use in end-product formulations that require environmental certification or are intended for export to European and American markets. Regarding Test Reports Whether a test report for OP-10 can be provided, there is no specific information on third-party environmental test reports for this product in this database. Whether the company can provide test reports from authoritative institutions such as SGS, Intertek for RoHS, REACH, APEO residues, as well as the product's COA (Certificate of Analysis), needs to be confirmed directly with Guoli Chemical's sales or technical support department. Typically, testing can be arranged according to customer needs. Test items generally include: APEO content, heavy metals, halogens, phthalates, and other restricted substances. Application Recommendations If you have strict requirements for environmental compliance, it is recommended to consider the following alternatives: tty alcohol polyoxyethylene ethers (AEO series): e.g., AEO-7, AEO-9, with better biodegradability than APEOs, widely used in daily chemical cleaning and industrial formulations. Isomeric alcohol polyoxyethylene ethers (e.g., TO series): penetration and emulsifying power close to OP-10, and compliant with REACH and other regulations. Alkyl polyglycosides (APG): derived from renewable raw materials, completely biodegradable, suitable for high-end green formulations. For specific parameters and supply status of the above alternative products from Guoli Chemical, further inquiry can be made. Precautions The acute toxicity of OP-10 itself is of low toxicity level (rat oral LD50 approximately 1800 mg/kg), but it must not be discharged directly into water bodies or sewers without treatment. Waste products and packaging should be disposed of by qualified treatment agencies in accordance with hazardous waste management requirements. When using OP-10 in export products, be sure to check the regulatory restrictions of the target market in advance to avoid returns or penalties due to non-compliance.

Question 5

What advantages does OP-10 octylphenol polyoxyethylene ether have compared to other similar products?

Accepted Answer

OP-10 has comprehensive advantages among similar nonionic surctants, including strong emulsifying power, st wetting and penetration, excellent chemical stability, and outstanding versatility in multiple fields, making it a cost-effective classic industrial additive. Detailed Explanation OP-10 octylphenol polyoxyethylene ether (CAS: 9036-19-5), as the core nonionic surctant product of Guoli Chemical, its core competitiveness lies in the balanced comprehensive performance of one agent with multiple functions. Compared with the AEO series (tty alcohol polyoxyethylene ether), the molecular structure of OP-10 contains a benzene ring rigid group, giving it stronger affinity and emulsifying ability for aromatic oil phases and polar oils, especially suitable for heavy-duty scenarios such as metal degreasing and crude oil demulsification. Compared with the NP series (nonylphenol polyoxyethylene ether), OP-10 has a shorter carbon chain and more concentrated molecular weight, resulting in ster wetting and penetration speed - according to the measured data of this product, the penetration time of a 0.1% aqueous solution at 25°C is only about 120 seconds, which is at a leading level among similar products. From the perspective of process adaptability, OP-10 has three obvious advantages: First, broad chemical tolerance - it maintains stable performance under dilute acid, dilute alkali, and hard water conditions, r superior to the performance of anionic surctants in acidic or hard water environments, and is more hydrolysis-resistant than some ester-type nonionic surctants; Second, precise HLB value (13.5) - it is exactly in the optimal range of O/W emulsifiers. Combined with a cloud point of 65~70°C, it can meet both room temperature formulations and be applied in industrial cleaning and printing/dyeing processes that require heating; Third, extremely high active content (≥99%) - free alcohol content is controlled below 0.5%, high formulation efficiency, few side reactions, helping downstream users reduce overall usage costs. Compared with currently market-promoted "green surctants" (such as APG alkyl glycosides, modified oil ethoxylates, etc.), OP-10 does have a gap in ecotoxicity (GHS aquatic chronic toxicity category 3), but its mature supply chain system, process reliability verified by decades of use, and significantly lower unit performance cost make it still have an irreplaceable competitive advantage in cost-sensitive fields such as industrial cleaning, textile printing and dyeing, and pesticide formulations. Especially in scenarios requiring the triple functions of emulsification, penetration, and dispersion, the formula simplification ability of OP-10 "one agent replacing three" is difficult for many new surctants to match. Technical Parameters Performance IndicatorOP-10 (Guoli Chemical)Typical Comparison with Similar Products HLB Value13.5AEO-9 approximately 13~14; NP-10 approximately 13.3; TX-100 approximately 13.5 — OP-10 is in the optimal range for O/W emulsification Cloud Point (1% aqueous solution)65~70°CAEO-9 approximately 60~65°C; NP-10 approximately 60~67°C — OP-10 has slightly better thermal stability Surce Tension (1%, 25°C)30 mN/mBasically the same as similar nonionic products, at an excellent level Critical Micelle Concentration (CMC)0.24 mmol/LLower than most AEO series (0.3~0.8 mmol/L), effective at low concentrations Penetration Power (0.1%, 25°C)About 120 secondsSignificantly better than AEO-7/9 test values at the same concentration Active Content≥99%Higher than market conventional products (usually 96~99%) Free Alcohol≤0.5%Commonly 1~3% in similar products on the market — low free alcohol leads to fewer side reactions and lighter odor pH Value (1% aqueous solution)5.0~7.0Nearly neutral, wide compatibility range, low corrosiveness to substrates Flash Point (Closed Cup)>230°CMuch higher than most solvent-based additives, good operational safety Acid/Alkali StabilityStable in dilute acid/dilute alkaliBetter than anionic surctants and ester-type nonionics (the latter are prone to hydrolysis) Hard Water ResistanceExcellentr superior to anionic series (such as LAS, AES which easily deactivate in hard water) Application Suggestions Industrial Cleaning Formulations: Recommended dosage 3~8%, compounding with anionic surctants (such as AES, sulfonic acid) can produce synergistic effects and improve oil removal rate. In metal degreasers, OP-10 works better when used with builders (sodium metasilicate, sodium tripolyphosphate). Textile Printing and Dyeing: As a penetrant, recommended dosage 0.5~2 g/L, working temperature should not exceed the cloud point (65~70°C) to avoid reduced surce activity due to the "cloud point effect." If high-temperature operation is required, it can be compounded with a small amount of anionic penetrant to raise the cloud point. Pesticide Emulsifier: Recommended dosage 5~15% of the oil phase, often compounded with anionic emulsifiers (such as calcium dodecylbenzene sulfonate) in a ratio of 3:1 to 5:1 to enhance emulsion stability. Formulation Optimization Tips: OP-10 used alone can provide excellent penetration and emulsification effects, but when compounded with a small amount of anionic surctant, the surce tension can be further reduced by 2~5 mN/m, and the wetting speed can be increased by 20~30%. It is recommended that formulation engineers perform gradient compounding experiments based on target performance. Precautions Environmental Compliance: OP-10 is harmful to aquatic life with long-lasting effects (H412). It must not be discharged directly into water bodies without treatment. In regions with strict environmental regulations (

Question 6

How to store OP-10 octylphenol polyoxyethylene ether? What is the shelf life?

Accepted Answer

OP-10 octylphenol polyoxyethylene ether should be stored sealed in a cool, dry, and well-ventilated warehouse, with a recommended temperature of 5°C–40°C; under proper storage conditions, the typical shelf life is 12–24 months (the exact shelf life is based on the product label and production date). Detailed Description OP-10 octylphenol polyoxyethylene ether is a nonionic surctant with good chemical stability, and it is not prone to decomposition or deterioration under normal storage conditions. However, as a polyoxyethylene ether product, prolonged exposure to high temperature, high humidity, strong light, or long-term contact with air may cause color deepening (oxidation), a small amount of moisture absorption, or slight performance fluctuations. Therefore, following standardized storage methods is key to ensuring product quality and extending service life. The core principles of storage are "sealed, cool, dry, and ventilated." After opening, the product should be resealed as soon as possible to reduce contact with moisture and oxygen in the air. Although OP-10 has a relatively high flash point (closed cup approximately 250°C) and is not flammable, the storage area should still be kept away from heat sources and ignition sources to maximize safety. Storage Conditions Storage ElementSpecific Requirements TemperatureIt is recommended to keep it between 5°C and 40°C, avoiding drastic temperature fluctuations. Low temperatures may cause the product to solidify or precipitate (a physical change that can be restored by slow rewarming), while high temperatures accelerate oxidation. Container MaterialStainless steel, high-density polyethylene (HDPE), or carbon steel lined with epoxy resin are recommended. Avoid prolonged contact with aluminum, copper, and non-polar rubber. SealingThe container must be kept sealed, opened only during use, and immediately resealed after use to prevent moisture absorption and contamination by impurities. Environmental RequirementsA dedicated warehouse that is cool, dry, and well-ventilated. Set up anti-leakage berms or trays to prevent accidental spills from reaching soil, waterways, or drainage systems. Materials to AvoidKeep away from strong oxidizers (such as peroxides, hypochlorites), strong acids, strong bases, and other incompatible substances, and store separately. Fire Source ControlKeep away from heat sources, sparks, and open flames. Although it is a non-flammable liquid, the storage area should still enforce a ban on fire sources. Shelf Life Explanation The official shelf life data for OP-10 is not listed in this product database. Based on industry practices and common experience with similar nonionic surctants (octylphenol polyoxyethylene ethers), under unopened and strictly following the above storage conditions, the shelf life is typically 12 to 24 months (from the date of production). The specific shelf life should be based on the product outer packaging label, the Certificate of Analysis (COA), or the date indicated by the production batch number. For products that exceed the labeled shelf life, it is not recommended to directly discard them. Instead, laboratory small-scale testing of key performance indicators (such as appearance, pH value, cloud point, emulsifying power, etc.) can be conducted to evaluate whether they still meet usage requirements. If the test results are within the acceptable range, the product can usually still be used. Precautions Low Temperature Handling: If the product solidifies or becomes cloudy at low temperatures, this is a physical change rather than deterioration. Move the container to a warm environment (20°C–30°C), allow it to slowly rewarm, and stir evenly. The product performance can be restored. Do not heat directly with an open flame. Post-Opening Management: After opening, use the product as soon as possible. If it cannot be used up in one go, ensure the container is resealed properly and mark the opening date. It is recommended to use it within 6 months. Empty Container Handling: Empty containers may have residual product. Do not use them to hold other substances without professional cleaning. When discarding, follow the same safety precautions as for the product itself. Batch Traceability: It is recommended to establish inbound/outbound records, marking the production batch number, production date, and opening date for quality traceability and first-in-first-out management.

Question 7

What safety precautions should be taken when using OP-10 octylphenol polyoxyethylene ether?

Accepted Answer

When using OP-10 octylphenol polyoxyethylene ether, special attention should be paid to its acute toxicity, skin/eye irritation, and long-term hazards to the aquatic environment. During operation, protective equipment must be worn, ventilation maintained, and storage and emergency handling regulations strictly followed. Detailed Explanation OP-10 (octylphenol polyoxyethylene ether) is a nonionic surctant. Although it has a relatively high flash point (closed cup >200°C, typically about 250°C) and is not flammable, it poses clear safety risks to humans and the environment. According to GHS classification, special attention is required for acute toxicity (oral category 4), skin corrosion/irritation (category 2), serious eye damage/irritation (category 2), and chronic aquatic toxicity (category 3). The oral LD50 in rats is approximately 1800 mg/kg, and rabbit tests show it can cause mild to moderate skin irritation and severe eye irritation. In daily operations, core protective measures include: maintaining good ventilation in the operating area and recommending local exhaust ventilation; wearing chemical-resistant protective gloves (e.g., nitrile rubber), protective clothing, and chemical safety goggles; a ce shield should be worn if there is a risk of splashing; eating, drinking, and smoking are prohibited during operation; after work, hands and any potentially exposed skin areas must be thoroughly washed. Contaminated clothing must be washed before reuse. This product has long-term persistent effects on aquatic organisms (96h-LC50 for fish approximately 3–10 mg/L, 48h-EC50 for daphnia it is strictly prohibited to discharge directly into the environment, sewers, or water bodies without treatment. Empty containers may contain product residues and must not be used to hold other substances without professional cleaning. Their disposal must follow the same safety precautions as for the product itself. Key Safety Parameters Quick Reference Hazard CategoryHazard StatementKey Data Acute Toxicity (Oral)H302: Harmful if swallowedRat oral LD50 approx. 1800 mg/kg Skin Corrosion/IrritationH315: Causes skin irritationRabbit test: mild to moderate irritation Serious Eye Damage/IrritationH319: Causes serious eye irritationRabbit test: may cause serious eye irritation Chronic Aquatic ToxicityH412: Harmful to aquatic life with long lasting effectsFish 96h-LC50 approx. 3–10 mg/L; Daphnia 48h-EC50 Flash Point (Closed Cup)Not flammable, but produces toxic fumes at high temperatures>200°C (typically approx. 250°C) Autoignition Temperature—>350°C Storage Requirements Store in a cool, dry, well-ventilated dedicated warehouse. The ambient temperature should be maintained between 5°C and 40°C, avoiding drastic temperature fluctuations. Preferred container materials are stainless steel, polyethylene (HDPE), or carbon steel lined with epoxy resin. Avoid prolonged contact with aluminum, copper, and non-polar rubber. Keep containers tightly closed. Reseal immediately after use to prevent moisture absorption and contamination by impurities. Keep away from strong oxidizers (e.g., peroxides, hypochlorites), strong acids, strong bases, and other incompatible substances. Store separately. Keep away from heat sources, sparks, open flames, and other ignition sources. Implement fire prohibition measures in the storage area. Set up spill containment dikes or trays to prevent discharge into soil, waterways, or drainage systems. Emergency Response Key Points Skin Contact Immediately remove contaminated clothing and shoes. Flush thoroughly with plenty of running water and mild soap for at least 15 minutes. If skin irritation or redness persists, seek medical attention immediately. Eye Contact Immediately hold eyelids open and rinse continuously with plenty of low-pressure running water or saline solution for at least 20 minutes. Remove contact lenses if worn. After rinsing, seek immediate ophthalmological medical attention. Inhalation Quickly move the affected person to fresh air and maintain an open airway. If respiratory discomfort or coughing occurs, rest in a semi-upright position and call for medical assistance immediately. If breathing stops, trained personnel should administer artificial respiration. Ingestion Do NOT induce vomiting. Rinse mouth thoroughly with clean water. Immediately drink 200–300 mL of water to dilute. Do not give anything by mouth to an unconscious person. Immediately seek medical attention with the product label or SDS. Spill Handling Small spill: Contain and collect with inert absorbent materials (e.g., sand, vermiculite) into a closed waste container. Large spill: Immediately cordon off the area, construct dikes or diversion channels to prevent spread, and transfer using explosion-proof pumps to spare containers. Do not flush into public drainage systems. Major spills should be reported immediately to local environmental authorities. Firefighting Measures This product is not flammable but may produce irritating and toxic fumes (e.g., carbon monoxide, aldehydes) at high temperatures. Firefighters should wear self-contained positive-pressure breathing apparatus and full chemical protective clothing. Depending on the surrounding fire, use water fog, alcohol-resistant foam, dry powder, or carbon dioxide to extinguish. Precautions Operators should receive training and be miliar with the hazard characteristics and emergency procedures of this product before starting work. In situations where aerosols or large amounts of vapor may be generated, it is recommended to wear approved organic vapor/particulate filter respiratory protection. Use explosion-proof tools and equipment when handling to avoid creating flames or sparks. For detailed physicochemical parameters and safe handling guidelines, please refer to the product Technical Data Sheet (TDS) and Safety Data Sheet (SDS).

Question 8

How to use OP-10 octylphenol ethoxylate? What is the recommended addition amount?

Accepted Answer

OP-10 octylphenol ethoxylate is easy to use and can be directly dissolved in water or oil phase system. The recommended addition amount ranges from 0.1% to 15% depending on the application scenario. Detailed Explanation OP-10 octylphenol ethoxylate (CAS number: 9036-19-5) is a nonionic surctant with an HLB value of 13.5. It is easily soluble in water and can be rapidly dispersed and dissolved under conventional stirring conditions. According to the Guoli Chemical product database, its 1% aqueous solution has a pH of 5.0~7.0 and a cloud point of 65~70°C. Therefore, it is recommended to control the usage temperature below the cloud point to maintain its good solubility and surce activity. If used in high-temperature systems (such as high-temperature dyeing, hot cleaning, etc.), attention should be paid to the ct that the product will precipitate from the aqueous solution when the temperature exceeds the cloud point, affecting performance. In terms of usage methods, OP-10 is usually added directly to the aqueous or oil phase as a formulation component and stirred evenly. For emulsion polymerization, it can be pre-dissolved in the aqueous phase and then slowly added dropwise to the reaction system; as an emulsifier for preparing emulsions, it can be dissolved in the aqueous phase or oil phase (depending on the emulsification method) and then formed into a stable emulsion using high-speed shearing or homogenizing emulsification equipment. Due to its strong chemical stability and resistance to hard water, OP-10 can be compounded with anionic, cationic, and other nonionic surctants to achieve synergistic effects. Technical Parameters The following are key performance parameters of OP-10 for reference: Parameter ItemTechnical IndexData Source Active Content≥99%Guoli Chemical Database HLB Value13.5Guoli Chemical Database Cloud Point (1% Aqueous Solution)65~70°CGuoli Chemical Database pH of 1% Aqueous Solution5.0~7.0Guoli Chemical Database Surce Tension (1% Aqueous Solution, 25°C)30 mN/mGuoli Chemical Database Penetration Power (0.1% Aqueous Solution, 25°C)Approximately 120 secondsGuoli Chemical Database CMC (Critical Micelle Concentration)0.24 mmol/LGuoli Chemical Database Density (20°C)1.06 g/cm³Guoli Chemical Database AppearanceColorless to light yellow transparent liquidGuoli Chemical Database Application Recommendations Based on general industry experience, the typical addition amount reference ranges for OP-10 in different application fields are as follows (actual optimal dosage needs to be determined through experiments; the Guoli Chemical Database does not provide specific recommended addition amounts): Application FieldRecommended Addition Amount Range (Industry Experience Reference)Usage Instructions Industrial Cleaners/Metal Degreasers1%~10% (of total formulation)Compounded with alkaline additives, chelating agents, etc., added directly to the aqueous phase Textile Dyeing and Printing Penetrant/Leveling Agent0.5~3 g/L (working solution)Dissolved in water to prepare working solution, used in pretreatment or dye bath Pesticide Emulsifier5%~15% (of total formulation)Compounded with anionic emulsifiers to prepare emulsifiable concentrate or aqueous emulsion Waterborne Coatings Wetting and Dispersing Agent0.1%~1.0% (of total formulation)Added during grinding or paint mixing stage to improve pigment dispersion Leather Degreasing Agent2%~8% (working solution)Used as an aqueous solution in the leather degreasing process Paper Deinking Agent0.5%~2% (relative to waste paper weight)Added to the deinking tank together with alkali, bleaching aids, etc. Crude Oil DemulsifierAdjusted according to specific formulationCompounded with other demulsifier components, injected into crude oil emulsion Metalworking Fluids1%~5% (of concentrate total)Added as an emulsifier and lubricant component into cutting fluid It is recommended to conduct small-scale tests before use, gradually optimizing the addition amount to ensure the best balance of performance and economy in the specific formulation. Precautions Personal Protection: Wear nitrile rubber gloves, chemical safety goggles, and protective clothing during operation. Avoid direct contact with skin and eyes. H319 Causes serious eye irritation, H315 Causes skin irritation. Temperature Control: The usage temperature should be kept below the cloud point (65~70°C) to avoid product precipitation and ilure due to high temperature. Dissolution Operation: It can be directly added to water and stirred at room temperature for dissolution; if the product becomes paste-like due to low ambient temperature, it can be slightly warmed (not exceeding 40°C) to restore fluidity before use. Compatibility Limitations: Avoid direct mixing with strong oxidizers (such as peroxides, hypochlorites). Storage Requirements: Store at 5°C~40°C, keep container tightly closed to prevent moisture absorption, and use stainless steel or HDPE containers. Environmental Discharge: Harmful to aquatic life (H412). Do not discharge directly into water bodies or drains without treatment.

Question 9

In which industries and processes is OP-10 Octylphenol Polyoxyethylene Ether mainly used?

Accepted Answer

OP-10 Octylphenol Polyoxyethylene Ether is widely used in eight core industries including industrial cleaning, textile printing and dyeing, pesticide formulations, coatings and inks, leather processing, papermaking, oil field exploitation, and metal processing, playing a key role as an efficient emulsifier, wetting and penetrating agent, and dispersing and detergent agent. Detailed Description OP-10 (Octylphenol Polyoxyethylene Ether) is a flagship nonionic surctant of Guoli Chemical, appearing as a colorless to light yellow transparent liquid or paste. With its excellent emulsifying, wetting, penetrating, and dispersing properties, OP-10 has become an indispensable core additive in numerous industrial formulations. It has high chemical stability, maintaining stable performance over a wide pH range, is resistant to hard water, and has excellent compatibility with various anionic, cationic, and other nonionic additives. In the field of industrial and household cleaning, OP-10 is widely used in formulations such as metal degreasers and hard surce cleaners, quickly wetting and emulsifying oil stains, effectively suspending and dispersing dirt particles, and providing both detergency and anti-redeposition functions. In the textile printing and dyeing industry, it serves as a penetrating agent, leveling agent, and wetting agent, helping dye liquor uniformly penetrate fibers, significantly improving dyeing quality and processing efficiency. Furthermore, OP-10 is used as an emulsifier for emulsifiable concentrates (EC) and oil-in-water emulsions (EW) in pesticide formulations, ensuring uniform dispersion of active ingredients and enhancing formulation stability and adhesion. In water-based coatings and inks, it acts as a wetting and dispersing agent and an emulsion polymerization emulsifier, improving pigment dispersion. In leather processing, it is used for degreasing; in papermaking, for felt washing and waste paper deinking; in oil field exploitation, for crude oil demulsification and acidizing additives; in metalworking fluids, it provides lubrication, cooling, and cleaning functions. Application Overview Application IndustrySpecific Process/UseFunction of OP-10 Industrial & Household CleaningMetal degreasers, hard surce cleaner formulationsWetting, emulsifying oil stains, dispersing dirt, preventing redeposition Textile Printing & DyeingPenetrating agent, leveling agent, wetting agentHelps dye liquor uniformly penetrate fibers, improving dyeing uniformity Pesticide FormulationsEmulsifier for EC (Emulsifiable Concentrate) and EW (Oil-in-Water Emulsion)Ensures uniform dispersion of active ingredients, enhances stability and adhesion Water-Based Coatings & InksWetting and dispersing agent, emulsion polymerization emulsifierImproves pigment dispersion, prevents sedimentation, enhances storage and application performance Leather ProcessingDegreasing processRemoves natural and process oils, providing a base for tanning and dyeing Papermaking IndustryFelt cleaner, waste paper deinking agentCleans felt dirt, promotes ink separation and removal Oil Field ExploitationCrude oil demulsifier, acidizing additivePromotes oil-water separation, improves acidizing operation efficiency Metal ProcessingComponent of cutting fluids, grinding fluidsProvides lubrication, cooling, and cleaning functions, extends tool life Application Recommendations The recommended dosage of OP-10 in actual formulations varies depending on the application: as the primary surctant in cleaner formulations, the recommended addition amount is 3%~10%; in pesticide emulsifiers, it typically accounts for 5%~15% of the total formulation; in textile leveling agents, it is generally 1~3 g/L of working solution; as a wetting and dispersing agent in water-based coatings, the recommended addition amount is 0.5%~2% of the pigment weight. The specific dosage should be optimized through experiments based on the actual system and process conditions. OP-10 can be compounded with nonionic, anionic, and cationic surctants as well as various additives. When compounding, it is recommended to first conduct small-scale tests to verify compatibility stability and synergistic effects. For applications requiring low foam, it can be used in combination with low-foaming surctants or with a defoamer. Precautions OP-10 is harmful if swallowed (H302); avoid ingestion during operation, and do not eat, drink, or smoke while working. It is irritating to skin (H315) and causes serious eye irritation (H319); wear chemical-resistant protective gloves and safety goggles during operation. It is harmful to aquatic life with long-lasting effects (H412); waste liquids containing OP-10 must not be discharged directly into water bodies or sewers without treatment. It is recommended to store in a cool and dry environment at 5°C to 40°C; suitable container materials include stainless steel, HDPE, or carbon steel lined with epoxy resin. The cloud point is approximately 61-67°C (1% aqueous solution); pay attention to changes in solubility when the operating temperature approaches or exceeds the cloud point.

Question 10

What are the physicochemical technical parameters of OP-10 octylphenol polyoxyethylene ether?

Accepted Answer

OP-10 octylphenol polyoxyethylene ether is a nonionic surctant with excellent comprehensive performance. Its core physicochemical parameters include an HLB value of 13.5, a cloud point of 65~70°C, an active content of ≥99%, and excellent compatibility and chemical stability. Detailed Description OP-10 octylphenol polyoxyethylene ether, with the national standard number C8H17C6H4O(CH2CH2O)nH, where n is approximately 10 and a molecular weight of about 647. At room temperature, the product appears as a colorless to pale yellow transparent liquid (may be pasty at lower temperatures). Due to its excellent emulsifying power, wetting and penetrating properties, and dispersing and detergency, it is widely used in industrial cleaning, textile printing and dyeing, and pesticide formulations. It is an ideal substitute for Triton X-100. As a nonionic surctant, OP-10 has strong chemical stability and can maintain stable surce activity over a wide range of acid-base conditions and in hard water. Its hydrophilic-lipophilic balance (HLB) value is 13.5, and the cloud point is between 65~70°C, which gives it excellent solubility and application effects in aqueous solutions. It is readily soluble in water and exhibits outstanding wetting and penetrating abilities. From safety and environmental perspectives, this product is stable under normal conditions. However, like all chemicals, contact with strong oxidizing agents should be avoided. It has a high flash point (>230°C) and is not easily flammable, but it is still recommended to operate in a well-ventilated environment. The product has long-term adverse effects on aquatic organisms, so untreated discharge is strictly forbidden. Technical Parameters ParameterValue CAS No.9036-19-5 Molecular FormulaC8H17C6H4O(CH2CH2O)nH, n≈10 Molecular Weight~647 Ionic TypeNonionic AppearanceColorless to pale yellow transparent liquid Active Content (%)≥99 Moisture Content (%)≤1.0 HLB Value13.5 Cloud Point (°C)65~70 pH Value (1% Aqueous Solution)5.0~7.0 Hydroxyl Value (mgKOH/g)~86.7 Acid Value (mgKOH/g)≤1 Density (20°C, g/cm³)1.06 Refractive Index (20°C)1.491 Critical Micelle Concentration (mmol/L)0.24 Surce Tension (1% Aqueous Solution, 25°C, mN/m)30 Penetrating Power (0.1% Aqueous Solution, 25°C)~120 seconds Kinematic Viscosity (25°C, mm²/s)~240 Flash Point (Closed Cup, °C)>230 Pour (Freezing) Point (°C) Foaming CharacteristicsModerate foaming Alkali StabilityStable in dilute alkali Chemical StabilityStable under normal conditions; avoid strong oxidizing agents SolubilityReadily soluble in water HygroscopicityYes Heavy Metal Content (mg/kg)≤10 Arsenic Content (mg/kg)≤2 Application Recommendations As a nonionic surctant with high active content, OP-10 performs excellently in various applications. In industrial and household cleaning, it is recommended for use in metal degreasers and hard surce cleaner formulations, leveraging its strong wetting and oil-emulsifying capabilities. In textile printing and dyeing, it can be used as a penetrating agent and leveling agent to help dyes adhere uniformly. In pesticide formulations (such as emulsifiable concentrates and emulsions), it acts as an efficient emulsifier to stably disperse active ingredients. Additionally, it can be used as a wetting and dispersing agent in water-based coatings and inks, as well as a degreasing agent in leather processing. Precautions Safe Operation: This product is harmful if swallowed and can cause skin and serious eye irritation. When handling, wear protective equipment such as nitrile rubber gloves and chemical safety goggles, and use in a well-ventilated area. Storage Conditions: Store in a cool, dry, and well-ventilated warehouse at 5°C to 40°C, keeping the container tightly sealed. Avoid storing together with strong oxidizing agents, strong acids, and strong bases. The container material should preferably be stainless steel or HDPE. Environmental Protection: This product has long-term adverse effects on aquatic organisms. Do not discharge waste liquid directly into drains, water bodies, or soil. Any accidental spillage should be collected and disposed of by a professional agency.

OP-10 Octylphenol Ethoxylate

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Property	Value
CAS No.	9036-19-5
Molecular Formula	C8H17C6H4O(CH2CH2O)nH, n≈10
Appearance	Colorless to pale yellow transparent liquid
Ionic Type	Nonionic
Avg. Molecular Weight	Approx. 647
Cloud Point	65~70
Active Content	≥99
pH Value(1%)	5.0~7.0
pH Value(5%)	6.0~8.0
Iodine Value	<1 g I₂/100g
Solubility	Readily soluble in water
Surface Tension	30 (1%aq. soln., 25°C, mN/m)
CMC	0.24 mmol/L
Acid Value	≤1
Hydroxyl Value	~86.7
Moisture	≤1.0
Density	1.06 (20°C, g/cm³)
Kinematic Viscosity	~240 (25°C, mm²/s)
Refractive Index	1.491 (20°C)
Flash Point	>230°C
Hygroscopicity	Hygroscopic
Chemical Stability	Stable under normal conditions; avoid strong oxidizers
Penetration	~120 s (0.1% aq., 25°C, canvas disc)
Foam Property	Medium foam
Alkali Resistance	Stable in dilute alkali
Unsaturation	0 mol/kg
Viscosity	~250 mPa·s (25°C)
Melting Point	<0°C (typical value~-20°C)
Low Shear Viscosity	~250 (25°C, mPa·s)
Solid Content	≥99
Free Alcohol	≤0.5%
Heavy Metal	≤10 mg/kg
Arsenic	≤2 mg/kg