Question 1

Is OP-13 octylphenol polyoxyethylene ether harmful to the human body? Does it have an impact on the environment?

Accepted Answer

OP-13 octylphenol polyoxyethylene ether has skin and eye irritation to the human body and is a low acute toxicity substance; it is toxic to aquatic organisms and may have long-term harmful effects on the aquatic environment, so emissions must be strictly controlled. Detailed Description Under normal industrial use conditions, OP-13 octylphenol polyoxyethylene ether has low acute toxicity to humans (rat oral LD50 > 2000 mg\/kg) and is not a highly toxic substance. However, this product is classified as Skin Irritation Category 2 and Serious Eye Damage\/Eye Irritation Category 2A, which can cause skin redness, itching, and other irritation reactions upon direct contact, and may cause severe eye irritation and discomfort if splashed into the eyes. Therefore, personal protective equipment such as protective gloves and safety goggles must be worn during operation to avoid direct contact with skin and eyes. From an environmental perspective, OP-13 is classified as Aquatic Acute Toxicity Category 2, indicating it is toxic to aquatic organisms. Ecotoxicological data show that its 96-hour median lethal concentration (LC50) for fish is 1–10 mg\/L, and its 48-hour median effect concentration (EC50) for daphnia is also 1–10 mg\/L. This means that even at relatively low concentrations, this product may cause significant harm to fish, plankton, and other aquatic ecosystems in water bodies. Furthermore, as an alkylphenol polyoxyethylene ether surctant, OP-13 has a relatively slow biodegradation rate in the natural environment, and its degradation intermediates (such as octylphenol) may have endocrine-disrupting activity, posing potential long-term risks to the ecological environment. Based on the above risk characteristics, during the entire process of storage, use, and waste disposal of this product, environmental regulations must be strictly followed, and untreated wastewater or waste liquid must not be directly discharged into sewers, surce water, or soil environments. In the event of a spill, inert absorbent materials should be used to contain and collect it, and it should ultimately be disposed of in compliance with regulations by a qualified hazardous waste treatment cility. Summary of Safety and Ecotoxicity Parameters ParameterClassification\/DataDescription Skin IrritationCategory 2 (H315: Causes skin irritation)Direct contact may cause skin redness and itching Eye IrritationCategory 2A (H319: Causes serious eye irritation)Splash into eyes may cause severe discomfort and damage Acute Oral ToxicityRat oral LD50 > 2000 mg\/kgLow acute toxicity, not a highly toxic substance Aquatic Acute ToxicityCategory 2 (H401: Toxic to aquatic life)Significant toxicity to fish and aquatic invertebrates Fish ToxicityLC50 (96h): 1–10 mg\/LModerate concentration can cause fish mortality Daphnia ToxicityEC50 (48h): 1–10 mg\/LSignificant toxic effects on plankton Signal WordWarning— PictogramsGHS07 (Exclamation mark), GHS09 (Environment)Health hazard + Environmental hazard Application Recommendations Given the human and environmental risk characteristics of OP-13, the following principles should be strictly followed in industrial applications: optimize the dosage during the formulation design phase to reduce environmental load; implement engineering ventilation and closed-loop measures during production operations to minimize operator exposure risk; at the end-use stage, especially in open systems such as cleaning, textiles, and pesticides, wastewater treatment cilities should be installed to degrade residual surctants through biochemical treatment or advanced oxidation processes before discharge. Precautions Chemical-resistant protective gloves and safety goggles must be worn during operation, and a ce shield should be worn if necessary. Thoroughly wash exposed skin after work; contaminated work clothes must be washed before reuse. It is prohibited to directly discharge waste liquid containing OP-13 into water bodies or soil; it must be disposed of in accordance with hazardous waste management requirements. Avoid storage with incompatible substances such as strong oxidizers; store in a cool, dry, and well-ventilated environment. If skin or eye contact occurs, rinse immediately with plenty of water; if irritation persists, seek medical attention immediately. For more detailed information, please refer to the product's Safety Data Sheet (SDS).

Question 2

What should I do if problems occur during the use of OP-13 Octylphenol Polyoxyethylene Ether? How to obtain technical support?

Accepted Answer

If problems occur during the use of OP-13 Octylphenol Polyoxyethylene Ether, solutions can be found by troubleshooting common usage issues, consulting product technical materials, or contacting the Guoli Chemical technical team. Detailed Explanation OP-13 (Octylphenol Polyoxyethylene Ether, CAS No.: 9036-19-5), as a high-performance nonionic surctant, may encounter problems in practical applications usually related to usage conditions, compatibility, or operation processes. When you encounter issues, it is recommended to first conduct systematic troubleshooting following the "phenomenon → cause → countermeasure" approach. Common problems include substandard emulsion stability, poor wetting and penetration, product layering or precipitation, abnormal foam, etc. Haian County Guoli Chemical Co., Ltd. provides users with multi-level technical support services. You can obtain the latest Safety Data Sheet (SDS) and Technical Data Sheet (TDS) through product packaging or the company's official website, which contain detailed product parameters, recommended usage conditions, and safe operation guidelines. For more in-depth technical assistance, you can directly contact the technical department of Guoli Chemical, where professional engineers will provide targeted solutions based on your specific application scenarios and process conditions. Common Usage Problem Troubleshooting Common ProblemPossible CauseRecommended Countermeasure Poor emulsification, emulsion layeringHLB value does not match the oil phase; insufficient dosage; improper addition order or stirring methodAdjust the dosage of OP-13 or blend with emulsifiers of different HLB values; optimize the emulsification process (e.g., phase inversion emulsification method); check water hardness Product becomes turbid or layeredStorage temperature too high or too low; beyond shelf life; mixed with incompatible substancesReturn to recommended storage temperature (cool, dry place), check performance after stirring; avoid freezing or overheating; confirm compatibility Insufficient wetting and penetrationSystem pH deviates from applicable range; temperature too low; competitive adsorptionOP-13 is stable in a wide pH range, but extreme conditions need verification; appropriately increase working fluid temperature to 30–60°C for testing Excessive foam affecting processNonionic surctants inherently have foaming properties; excessively vigorous stirringUse in combination with a small amount of defoamer; reduce stirring intensity; adjust OP-13 dosage Skin or eye irritationDirect contact with product without wearing protective equipment during operationImmediately rinse with plenty of water; wash skin with soap and water; if eye irritation persists, seek medical attention immediately (see SDS) Application Recommendations To achieve optimal performance with OP-13, it is recommended to refer to the following guidance for different application scenarios: Industrial cleaning: Recommended dosage is 2%–10% of the total formulation, and blending with anionic surctants can enhance degreasing efficiency. Textile dyeing and printing: When used as a scouring agent or penetrant, the recommended dosage is 0.5–3 g/L (working fluid), with better results in the range of 40–80°C. Pesticide emulsification: Recommended dosage is 5%–15% of the oil phase, often blended with anionic emulsifiers (e.g., calcium salts) for optimal emulsification stability. Emulsion polymerization: Recommended dosage is 1%–4% of the total monomer, and gradient experiments should be conducted to determine the optimal dosage based on target particle size and stability requirements. Be sure to conduct small-scale tests before use to confirm the compatibility and optimal ratio of OP-13 with other components in the formulation. How to Obtain Guoli Chemical Technical Support Haian County Guoli Chemical Co., Ltd. provides multi-channel technical support for customers: Review product materials: Obtain the Safety Data Sheet (SDS) and Technical Data Sheet (TDS) for the product, which include physicochemical parameters, usage guidelines, and safety precautions. Business contact: Contact the Guoli Chemical sales team through procurement channels, and the sales personnel will coordinate technical engineers to address specific issues. Technical consultation: Provide detailed information such as your application scenario, process conditions, and problem description to the Guoli Chemical technical department, where engineers will conduct targeted analysis and provide solutions. Sample re-examination: If product quality anomalies are suspected, contact the Guoli Chemical quality department to arrange batch traceability and re-examination. Precautions OP-13 is an industrial chemical. Be sure to read the product SDS before operation. The product is irritating to the skin and eyes (Skin irritation Category 2, Serious eye damage/eye irritation Category 2A). Wear protective gloves and goggles during operation, and thoroughly clean the skin after work. The product is toxic to aquatic organisms (Acute aquatic toxicity Category 2), so avoid release into the environment. Waste must be disposed of by an approved waste treatment cility. In case of accidental exposure or ingestion, follow the accident response measures in the SDS and seek medical attention promptly.

Question 3

How to purchase OP-13 Octylphenol Polyoxyethylene Ether? What is the minimum order quantity?

Accepted Answer

The current database does not have a clear minimum order quantity parameter for OP-13. For actual orders, please contact the Guoli Chemical sales team directly for confirmation. Detailed Explanation OP-13 Octylphenol Polyoxyethylene Ether (CAS No.: 9036-19-5) is one of the core products of Guoli Chemical. It is a high-performance nonionic surctant widely used in industrial cleaning, textile printing and dyeing, pesticide emulsification, emulsion polymerization, and other fields. According to the database information, this product does not have a publicly fixed minimum order quantity. The actual minimum order quantity is usually determined flexibly based on packaging specifications, inventory, and customer requirements. The conventional packaging specifications provided for the product include: 50kg plastic drum, 200kg plastic drum, IBC tote. Generally, the minimum order unit may be based on one complete package, such as 1 drum (50kg or 200kg), but the specific policy must be confirmed with the sales team. Purchase Process and Contact Information Recommended purchase path: Phone Inquiry: Call the sales department of Hai'an Guoli Chemical Co., Ltd. directly, provide the product name (OP-13) or CAS No. (9036-19-5), and obtain the latest quotation and ordering policy. Request Samples: If using the product for the first time, you can request free samples or small packaging samples from the sales team for formula verification and performance testing. Business Negotiation: For bulk purchases (ton-level or above), ask the sales team to provide tiered pricing, payment term support, and logistics solutions. Regarding pricing, the database shows that the current reference pricing unit is RMB/ton, but the specific unit price is not publicly listed. There is also a note stating "The above prices are for reference only. Please contact the sales team for the latest quotation". Chemical raw material prices are greatly affected by market conditions, raw material costs, and purchase volume, so real-time inquiries are the most accurate. Packaging Specifications Reference Packaging Type Specification Applicable Scenario Plastic Drum 50kg Small batch trial, laboratory formula development Plastic Drum 200kg Medium batch production, regular industrial procurement IBC Tote Approximately 1000kg Large batch continuous production, large-scale application Purchase Notes OP-13 is an industrial chemical. When purchasing, ensure that compliant storage and use conditions are available. Enterprise customers may need to provide relevant qualification certificates. The product is toxic to aquatic organisms (H401). Storage and transportation must comply with hazardous chemical regulations to avoid environmental leakage. Before signing a procurement contract, it is recommended to clarify product specifications (e.g., active content ≥99%, HLB value 14.5, cloud point 105~115°C, etc.) to ensure batch quality meets application requirements. If exporting, please confirm with the sales team in advance regarding customs codes, dangerous goods transport classification, and other export compliance matters.

Question 4

Does OP-13 Octylphenol Polyoxyethylene Ether meet environmental protection requirements? Can a test report be provided?

Accepted Answer

OP-13 Octylphenol Polyoxyethylene Ether is toxic to aquatic life (H401). It belongs to the alkylphenol polyoxyethylene ether (APEO) class of chemicals, which are being strictly restricted globally. Against the backdrop of increasingly stringent environmental regulations, it does not meet high-standard environmental protection requirements. Detailed Explanation According to safety data in the Guoli Chemical product database, OP-13 Octylphenol Polyoxyethylene Ether is clearly classified as Aquatic Acute Toxicity Category 2 and carries the GHS09 environmental hazard pictogram, with the hazard statement H401: Toxic to aquatic life. Its ecotoxicity data include fish LC50 (96h) 1–10 mg/L and Daphnia EC50 (48h) 1–10 mg/L, indicating that this product has clear toxic effects on aquatic ecosystems. The product safety instructions also specifically emphasize that "may cause long-term harmful effects to aquatic life and should be prevented from directly entering water bodies or the environment." From a global regulatory compliance perspective, alkylphenol polyoxyethylene ethers (APEO), to which OP-13 belongs—including octylphenol ethoxylates (OPEO) and nonylphenol ethoxylates (NPEO)—are cing increasingly stringent regulatory restrictions. The EU REACH regulation has listed octylphenol and nonylphenol as Substances of Very High Concern (SVHC) and set strict limits on APEO residues in consumer products such as textiles. International standards such as the OEKO-TEX® Standard 100 and the ZDHC (Zero Discharge of Hazardous Chemicals) program explicitly prohibit or strictly restrict the use of APEO. For customers in textile, leather, coatings, and other industries targeting high-end markets such as the EU and North America, the environmental compliance of OP-13 poses significant risks. Environmental Technical Parameters ParameterDataSource GHS Hazard ClassificationAquatic Acute Toxicity — Category 2Guoli Chemical Product SDS Hazard StatementH401: Toxic to aquatic lifeGuoli Chemical Product SDS GHS PictogramGHS09 (Environmental Hazard)Guoli Chemical Product SDS Fish Acute Toxicity LC50 (96h)1–10 mg/LGuoli Chemical Product SDS Daphnia Acute Toxicity EC50 (48h)1–10 mg/LGuoli Chemical Product SDS BiodegradabilityNot available— Regarding Test Reports Currently, the Guoli Chemical product database does not include environmental test reports for OP-13 (such as REACH compliance reports, APEO content test reports, RoHS test reports, etc.). To obtain the latest environmental compliance documents, third-party test reports, or Safety Data Sheets (SDS) for this product, it is recommended to directly contact Guoli Chemical's sales or technical support team for the most accurate and up-to-date official documents. Application Recommendations If your end market has explicit bans on APEO (e.g., exporting textiles, automotive interior parts, electronic products to the EU), it is recommended to evaluate the following alternatives: tty Alcohol Polyoxyethylene Ether (AEO series): For example, AEO-9, which has good biodegradability and is not subject to APEO regulations, is currently a mainstream environmentally friendly alternative. Isomeric Alcohol Polyoxyethylene Ether: For example, isotridecanol polyoxyethylene ether series, which offers excellent penetration and emulsification properties and complies with international environmental standards. tty Amine Polyoxyethylene Ether or other non-APEO nonionic surctants: Can be selected as substitutes based on specific application scenarios. Precautions OP-13 is still widely used in domestic industrial cleaning, metal processing, and pesticide emulsification in non-export-oriented fields, but it must be strictly prevented from entering water bodies and the environment during use. Operate according to the product SDS guidelines, wear protective gloves and goggles, and thoroughly clean skin after work. For waste disposal, dispose of contents and containers as hazardous waste at an approved waste treatment cility; do not mix with household waste or discharge into drains. If it is necessary to confirm the acceptance standards for APEO in specific industries or downstream customers, it is recommended to communicate compliance requirements with end users in advance before deciding whether to use OP-13.

Question 5

What are the advantages of OP-13 octylphenol ethoxylate compared to other similar products?

Accepted Answer

According to the technical data of Guoli Chemical, compared with similar octylphenol ethoxylate products (such as OP-7, OP-10, OP-21, OP-30, OP-40, etc.), the core advantage of OP-13 octylphenol ethoxylate lies in its optimal balance of emulsification efficiency and wetting/penetrating ability, making it outstanding in formulations requiring efficient degreasing, stable emulsification, and high penetrating performance. ### Detailed Description OP series products are all condensates of octylphenol and ethylene oxide (EO). With the increase of EO addition number (n value), the product performance exhibits regular changes: - Low EO products (such as OP-7, OP-10): Weak hydrophilicity, low HLB value (OP-7 is 11.7, OP-10 is 13.5), mainly dispersed or emulsified in water, st wetting and penetrating speed, but relatively limited emulsion stability. - High EO products (such as OP-21, OP-30, OP-40): Strong hydrophilicity, high HLB value (16-18), easily soluble in water, excellent emulsification and dispersion performance, but wetting and penetrating speed decreases significantly (OP-21 penetration time > 180 seconds, OP-30 > 300 seconds), and cloud point increases, poor low-temperature fluidity. - OP-13 (n≈13): Located in the "golden zone" of EO addition number, it combines the st wetting and penetrating ability of low/medium EO products with the strong emulsification and dispersion ability of high EO products. It is the most balanced overall performance product, especially good at quickly stripping heavy oil stains and stably emulsifying and dispersing them, preventing secondary deposition of oil. ### Core Parameter Comparison Table | Product Model | EO Addition Number (n) | HLB Value | Cloud Point (℃) | Penetrating Ability (1% Aqueous Solution) | Foam Characteristics | Core Performance Positioning | |---------|------------|-------|---------|-----------------|---------|-------------| | OP-7 | 7 | 11.7 | 25-35 | Extremely st | Low foam | Strong wetting and penetration, weak emulsification | | OP-10 | 10 | 13.5 | 65-70 | About 120 seconds | Medium foam | Balanced penetration and emulsification | | OP-13 | 13 | About 14.5 | About 80-90 | About 80 seconds | Medium foam | High-efficiency emulsification + st penetration | | OP-21 | 21 | 16 | ≥100 | >180 seconds | Medium-low foam | High-temperature emulsification and dispersion | | OP-30 | 30 | 17 | >100 | >300 seconds | Low foam | Strong emulsification and stability | | OP-40 | 40 | 17-18 | >100 | Relatively slow | Low foam | High-temperature strong emulsifier | *Note: The HLB value, cloud point, and penetrating ability data of OP-13 are typical values reasonably derived from its EO addition number and technical data of similar products.* ### Application Advantages and Suggestions 1. Industrial and household cleaning fields: OP-13 is the preferred emulsifier for high-efficiency heavy-duty degreasers. Compared with OP-10, it has stronger oil emulsification ability and more stable wash liquor; compared with OP-21, etc., it has superior st penetration and deep cleaning ability for brics and hard surces. Recommended dosage: 2%-10%. 2. Textile printing and dyeing processing: As a scouring agent and penetrating agent, OP-13 can quickly penetrate into the fiber interior, efficiently remove natural oil and wax, and its excellent emulsification ensures that the removed impurities are stably dispersed in the working solution. When used as a leveling agent, its moderate retarding ability also ensures even dyeing. 3. Pesticide emulsifiable concentrate and microemulsion: The emulsifying ability of OP-13 is sufficient to ensure the stable self-emulsification of pesticide emulsifiable concentrate, and its penetrating ability enhances the spreading and adhesion of the liquid on plant leaf surces, improving efficacy. Its HLB value (about 14.5) is particularly suitable for formulating emulsifiable concentrates requiring medium-high HLB values. 4. Metalworking fluids: While providing excellent emulsifying and lubricating performance, OP-13 can quickly wet the surce of workpieces and tools, effectively carrying away heat and metal chips, suitable for formulating cutting fluids with both cleaning and lubricating properties. ### Precautions - Although OP-13 has excellent comprehensive performance, high EO products (such as OP-30, OP-40) are still more professional choices when extremely high emulsion stability (such as high-temperature asphalt emulsification) or ultra-long stable emulsion is required. - All alkylphenol ethoxylate products have potential environmental impacts. Use and discharge must strictly comply with relevant regulations, and priority should be given to considering the possibility of substitution or restriction in final product formulations.

Question 6

How to store OP-13 Octylphenol Ethoxylate? What is the shelf life?

Accepted Answer

OP-13 Octylphenol Ethoxylate should be stored in a cool, dry, and well-ventilated environment in a sealed container. Under unopened and compliant storage conditions, the shelf life is typically 12-24 months (subject to the product label and COA). Detailed Explanation OP-13 Octylphenol Ethoxylate (CAS: 9036-19-5) is a non-ionic surctant with relatively stable chemical properties. However, improper storage can lead to moisture absorption, oxidation, or performance degradation. To ensure that its core functions such as emulsification, wetting, and dispersion remain at optimal levels within the usage period, strict storage management according to specified conditions is essential. The storage environment is critical to the quality of OP-13. The product appears as a light yellow to colorless transparent viscous liquid or paste. Under low temperature conditions, it may become more viscous or even solidify; this is a physical change and does not affect product quality. However, it is recommended to store within the temperature range to avoid repeated freeze-thaw cycles. High temperatures may accelerate oxidation, leading to darker color and reduced active content. Additionally, due to its hygroscopic nature, the container must be kept sealed to prevent moisture and impurities from entering. Regarding shelf life, there is no specific value for this product in the Guoli Chemical product database. Generally, for octylphenol ethoxylate non-ionic surctants, the shelf life is 12 to 24 months from the date of manucture when stored unopened under strict conditions. It is recommended that users refer to the shelf life indicated on the product packaging label and the COA (Certificate of Analysis) as the primary reference, and perform necessary performance verification before use. Storage Condition Requirements Storage ElementSpecific Requirement Container SealKeep container tightly sealed to prevent moisture absorption and contamination by impurities Storage EnvironmentCool, dry, and well-ventilated area Temperature ControlRecommended to control within the range indicated on the product label to prevent freezing or overheating and deterioration Away from Ignition and Heat SourcesKeep away from heat sources, open flames, sparks, and high-temperature equipment Incompatible SubstancesAvoid contact with incompatible substances such as strong oxidizers Isolated StorageStrictly prohibit storage together with food, beverages, or feed Container MaterialUse corrosion-resistant and leak-proof containers (e.g., stainless steel, polyethylene, polypropylene) Shelf Life Management Recommendations Manucturer Information as Standard: Rely primarily on the expiration date indicated on the product packaging label and COA. First-In, First-Out Principle: Establish inventory management to prioritize the use of earlier batch numbers. Regular Inspection: For products nearing expiration or already opened, it is recommended to inspect appearance (color, clarity, any stratification or precipitation) and key performance indicators (e.g., emulsifying power, penetration) before use. Management After Opening: Use the product as soon as possible after opening. Reseal the container immediately after each use to minimize exposure to air. Disposal of Expired Product: Do not use expired product directly. It should be disposed of by authorized waste treatment cilities in accordance with hazardous waste regulations. Precautions This product is toxic to aquatic organisms (H401). Under no circumstances should the product or its container contents be discharged into sewers, water bodies, or soil. In case of spillage, use inert absorbent material to contain and collect, then place into a sealed container and dispose of as hazardous waste. Protective gloves and goggles are recommended during handling and sampling. Please refer to the Safety Data Sheet (SDS) for details.

Question 7

What safety precautions should be taken when using OP-13 Octylphenol Ethoxylate?

Accepted Answer

OP-13 Octylphenol Ethoxylate is a moderately irritating industrial chemical. During handling, special protection must be provided for skin, eyes, and control of environmental release. Detailed Description OP-13 (Octylphenol Ethoxylate) is a high-performance nonionic surctant. Although relatively safe under normal industrial conditions, based on its hazard classification (skin irritation category 2, serious eye damage\/eye irritation category 2A, acute aquatic toxicity category 2), improper handling may pose risks to human health and the aquatic environment. The product GHS label signal word is "Warning", and it carries two pictograms: GHS07 (exclamation mark) and GHS09 (environment). Regarding the risk of human exposure, OP-13 is clearly irritating to skin and eyes. Contact may cause redness, pain, and other discomfort. Inhalation of vapors or mists may also cause respiratory irritation. Therefore, operators must wear protective gloves, protective goggles\/ce shield, and operate in a well-ventilated area, thoroughly washing exposed areas after operation. Eating, drinking, or smoking is strictly prohibited during operation to prevent accidental ingestion. In terms of environmental safety, OP-13 is toxic to aquatic organisms. According to ecotoxicological data, its 96-hour LC50 for fish is 1–10 mg\/L, and its 48-hour EC50 for daphnia is 1–10 mg\/L, indicating that even low concentrations may cause long-term adverse effects on aquatic ecosystems. Therefore, strict measures must be taken to prevent the product from entering sewers, surce water, or soil. In case of spillage, use inert absorbent materials to contain and collect the spill, place it in sealed containers for professional disposal. Key Points for Safe Operation Body Part to Protect Protective Requirement Description Hands Protective gloves To prevent direct skin contact, category 2 skin irritant Eyes Protective goggles\/ce shield Category 2A serious eye irritation, must be strictly protected Respiratory Respiratory protection (if needed) Avoid inhalation of vapors or mists, ensure good ventilation Environment Prevent leakage and release Toxic to aquatic organisms, do not discharge into water bodies Emergency Treatment Recommendations Skin contact: Remove contaminated clothing immediately, wash thoroughly with plenty of soap and water. Contaminated clothing must be washed before reuse. Eye contact: Immediately rinse with plenty of water for several minutes. If wearing contact lenses and easy to do so, remove them and continue rinsing. If irritation persists, seek medical attention immediately. Inhalation: Move the person to fresh air immediately and maintain an open airway. If symptoms persist, seek medical attention immediately. Ingestion: Rinse mouth, do NOT induce vomiting, seek medical attention immediately and show the product container or label. Spill handling: Use inert absorbent materials (such as sand, vermiculite) to contain and collect spilled material, place in sealed containers for disposal, avoid discharge into sewers or the environment. Storage and Disposal Precautions Storage conditions: Keep container tightly closed, store in a cool, dry, well-ventilated area, away from heat sources, ignition sources, and incompatible materials such as strong oxidizers. Temperature control requirements: Storage temperature should be within the range recommended on the product label to prevent freezing or overheating that may cause deterioration. Segregation requirements: Avoid storage together with food, beverages, or animal feed. Disposal: Both contents and container must be treated as hazardous waste and disposed of at an approved waste treatment cility. Do not mix with household waste and strictly comply with applicable regulations. Further information: For detailed safety data, please refer to the product's Safety Data Sheet (SDS). The above is for reference only and does not replace the complete guidance of the SDS.

Question 8

How to use OP-13 Octylphenol polyoxyethylene ether? What is the recommended dosage?

Accepted Answer

The usage method of OP-13 varies depending on the application area. It should be diluted and dissolved in water first, then added to the formulation system. The recommended addition amount is usually 1%~10% of the total formulation, and the optimal dosage should be determined based on process requirements and experiments. Detailed Explanation OP-13 (Octylphenol polyoxyethylene (13) ether) is a nonionic surctant with an HLB value of approximately 14.5, easily soluble in water, and a cloud point as high as 105~115°C. It has good hydrophilicity and emulsifying ability. When using, generally first mix OP-13 with the aqueous phase components of the formulation, heat to 40~50°C under stirring to accelerate dissolution (the product may be paste-like at low temperatures), then add the oil phase or other components after complete dispersion. Due to its excellent compatibility with anionic, cationic, and nonionic surctants, it can be flexibly compounded to achieve synergistic effects. OP-13 can be used alone as an emulsifier, penetrant, or detergent, or combined with other surctants (such as OP-10, AEO-9, etc.) to adjust the HLB value and improve overall performance. In applications requiring emulsion stability such as emulsion polymerization and pesticide emulsification, it is recommended to use it in combination with oil-soluble emulsifiers with low HLB values to obtain narrower emulsion particle size distribution and better storage stability. Recommended Dosage by Application Area Application AreaRecommended Dosage (% of total formulation)Usage Method Industrial cleaners (metal hard surce cleaning)2%~8%Compound with alkaline additives, chelating agents, etc., stir and dissolve in water at 40~50°C for immersion or spray cleaning Household liquid detergents1%~5%Used as a degreasing active component, compounded with other surctants Textile scouring agents/penetrants0.5~3 g/L (working solution concentration)Add directly to the pretreatment bath, use with alkali agents, treatment temperature 80~100°C Textile leveling agents0.5~2 g/L (working solution concentration)Add to the dye bath at the beginning of the dyeing process to help uniform dye uptake Pesticide emulsifiers (EC formulation)5%~15% (based on oil phase)First dissolve in the pesticide technical oil phase, then slowly add to water for emulsification Emulsion polymerization emulsifiers1%~3% (based on total monomer)Add to the aqueous phase before polymerization, partially pre-emulsify monomers to form a stable pre-emulsion Metalworking fluids (cutting fluids/grinding fluids)3%~10%Used as emulsifier and lubricant component, compounded with base oil, rust inhibitors, etc., into a concentrate Leather degreasing agents1~5 g/L (working solution concentration)Prepare degreasing solution with warm water, treatment time 30~60 minutes Paper deinking/wetting agents0.1%~0.5% (based on pulp)Add during pulping or flotation process to improve ink detachment and fiber dispersion Paint/ink wetting and dispersing agents0.2%~1% (based on total formulation)Add during grinding or dispersion stage, better effect when ground together with pigment Data explanation: The above dosages are reference values based on general industry practices. The actual optimal dosage should be determined through small-scale experiments according to specific raw materials, process conditions, and performance requirements. The product database does not provide detailed dosage specifications for each application area; the above ranges are general industry experience data. Application Suggestions Compounding suggestion: OP-13 (HLB≈14.5) is highly hydrophilic. For emulsifying oily substances, it is recommended to combine it with low HLB emulsifiers (such as Span series, OP-4, isomeric alcohol ethoxylates, etc.). Better emulsification effect can be achieved when the mixed HLB value is adjusted to 8~12. Dissolution operation: At low temperatures, the product may become paste-like or soft solid. Before use, preheat the packaging container in a warm water bath (≤50°C) to restore fluidity, then measure and take. Avoid direct high-temperature heating or contact with open flames. Penetration application: The penetration power of OP-13 is about 30 seconds (canvas settling method). It has excellent wetting and penetration performance, which can significantly shorten process time in textile pretreatment. It is recommended to compound with alkali-resistant penetrants to improve stability in strong alkali baths. Foam control: OP-13 has moderate foam characteristics. Under high shear conditions such as circulating spray cleaning, it may generate more foam. It is recommended to add an appropriate amount of defoamer or introduce low-foam surctants into the formulation to balance foam performance. Notes Safety protection: OP-13 is irritating to the skin and eyes (H315/H319). Wear protective gloves and goggles during operation to avoid direct contact. In case of accidental contact, rinse immediately with plenty of water. Environmental control: The product is toxic to aquatic organisms (H401). Wastewater containing OP-13 must be treated to meet discharge standards before discharge, and it is strictly prohibited to discharge directly into sewers or natural water bodies. Storage requirements: Store tightly sealed in a cool, dry place, away from strong oxidizers and heat sources. The product is hygroscopic; seal promptly after opening to prevent moisture absorption and deterioration. Prohibited scenarios: This product is an industrial chemical and must not be used in food, medicine, cosmetics, or personal care products.

Question 9

What are the main industries and processes where OP-13 Octylphenol Ethoxylate is applied?

Accepted Answer

OP-13 Octylphenol Ethoxylate is mainly used in eight major industries: industrial and household cleaning, textile printing and dyeing, pesticide formulations, emulsion polymerization, metalworking, leather degreasing, papermaking, and coatings and inks, covering a wide range of processes from heavy-duty cleaning to fine chemical synthesis. Detailed Description OP-13 Octylphenol Ethoxylate (CAS No.: 9036-19-5) is a high-performance nonionic surctant produced by Guoli Chemical. It appears as a light yellow to colorless transparent viscous liquid or paste, with a high active matter content (≥99%), an HLB value of approximately 14.5, and a cloud point of 105-115°C. Leveraging its excellent emulsifying, wetting, penetrating, dispersing, and detergency properties, this product demonstrates irreplaceable application value in numerous industrial fields. In formulation systems, OP-13 can rapidly reduce oil-water intercial tension, forming stable and fine emulsions. It is resistant to acids, alkalis, and hard water, and has excellent compatibility with anionic, cationic, and other nonionic surctants. This makes it a core component in various industrial auxiliary formulations, maintaining stable and efficient performance even under harsh conditions such as high temperature, high shear, or strong acids and alkalis. Detailed Explanation of Eight Application Areas and Processes Industrial and Household Cleaners: As a core component of high-efficiency degreasers, it effectively removes heavy grease from metal hard surces and stubborn stains from brics, widely used in industrial cleaners, kitchen cleaners, laundry detergents, etc. Textile Printing and Dyeing Auxiliaries: Used as a scouring agent, penetrant, and leveling agent, it significantly improves wetting and penetration in fiber pretreatment and dyeing processes, helping dyes to evenly color the bric, reducing color spots, while enhancing bric hand feel and whiteness. Pesticide Emulsifiers: As a key emulsifying auxiliary, it stably and finely disperses oil-soluble active ingredients in water to form a uniform emulsion, enhancing the spreading and adhesion of the spray liquid on plant leaves, thereby improving biological activity. Emulsion Polymerization Emulsifiers: Provides a stable emulsification foundation for the emulsion polymerization of monomers such as vinyl acetate and acrylates, precisely controlling latex particle size, improving storage stability and application performance of polymer emulsions. Metalworking Fluids: Acts as a multifunctional additive in cutting fluids and grinding fluids, combining emulsifying, cleaning, lubricating, and anti-rust functions, reducing processing friction and heat buildup, extending tool life. Leather Degreasing Agents: Efficiently and gently removes natural ts and dirt in the raw hide degreasing process without damaging the leather surce, promoting uniform subsequent processes such as liming and tanning. Papermaking Auxiliaries: Used as a component of waste paper deinking agents and in paper coating processes, enhancing wetting and dispersion of pulp fibers, aiding in ink stripping and separation during deinking, improving pulp whiteness and paper performance. Dispersants and Wetting Agents for Coatings and Inks: Effectively promotes deagglomeration and stable dispersion of pigment and filler particles, preventing floating and flooding, improving color development, gloss, leveling, and hiding power of the system. Technical Support For more detailed industry-specific formulation recommendations, dosage references, or sample requests, please contact the Guoli Chemical Application Technology Center: 0513-88898889. We will provide one-on-one technical service. Reference Data The above application information is sourced from the Guoli Chemical product database, where the application fields and process descriptions are summaries of the product's measured performance and customer application feedback.

Question 10

What are the physicochemical technical parameters of OP-13 Octylphenol Polyoxyethylene Ether?

Accepted Answer

OP-13 Octylphenol Polyoxyethylene Ether is a nonionic surctant with an HLB value of approximately 14.5, appearing as a colorless to light yellow oily liquid or paste at room temperature, with excellent hydrophilicity and emulsifying properties. Detailed Description OP-13 (Octylphenol Polyoxyethylene Ether, CAS No.: 9036-19-5) is produced by condensing octylphenol with approximately 13 moles of ethylene oxide. Its molecular formula is C8H17C6H4O(CH2CH2O)nH (n≈13), with a molecular weight of approximately 779. As a high-performance nonionic surctant, this product has an effective active content of over 99%, with free alcohol content controlled below 1%, ensuring purity. It is readily soluble in water, with a stable pH range of 5.0~7.0 for its aqueous solution, exhibiting near-neutral properties, and good compatibility with anionic, cationic, and other nonionic surctants, offering excellent formulation adaptability. OP-13 has an optimized hydrophilic-lipophilic balance structure, with a cloud point in the range of 105~115°C, indicating good temperature resistance in aqueous systems. The surce tension of the product is between 30~32 mN\/m, and the critical micelle concentration (CMC) is as low as 0.1~0.3 g\/L, achieving significant intercial activity at low dosages. The penetration power is approximately 30 seconds (canvas sinking method), with st wetting rate and moderate foam characteristics, making it widely applicable in both industrial and household fields. The product has a flash point above 150°C, is non-flammable, chemically stable, and exhibits excellent alkali resistance, maintaining activity across a wide pH range and in hard water conditions. It has some hygroscopicity and should be stored in a sealed container in a cool, dry place. The melting point is approximately 20~25°C, and it may become a paste at low temperatures; appropriate preheating treatment can be applied before use in winter. Technical Parameters Basic Product Information Chemical NameOctylphenol Polyoxyethylene (13) Ether CAS No.9036-19-5 Molecular FormulaC8H17C6H4O(CH2CH2O)nH, n≈13 Molecular WeightApproximately 779 Ionic TypeNonionic AppearanceColorless to light yellow oily liquid or paste Physical Properties Density (25°C)Approximately 1.06 g\/cm³ Kinematic Viscosity (25°C)2000~4000 mPa·s Refractive Index (25°C)Approximately 1.490 Melting PointApproximately 20~25°C Flash Point>150°C SolubilityReadily soluble in water HygroscopicityHygroscopic Surce Activity Properties HLB ValueApproximately 14.5 Cloud Point (1% Aqueous Solution)105~115°C Surce Tension30~32 mN\/m Critical Micelle Concentration (CMC)0.1~0.3 g\/L Penetration Power (Canvas Sinking Method)Approximately 30 seconds Foam CharacteristicsModerate Foam Alkali ResistanceAlkali-resistant Chemical Specifications Active Content≥99% pH Value (1% Aqueous Solution)5.0~7.0 pH Value (5% Aqueous Solution)5.0~7.0 Moisture Content≤1.0% Hydroxyl ValueApproximately 72 mg KOH\/g Acid Value≤1 mg KOH\/g Saponification Value≤1 mg KOH\/g Iodine Value≤1 g I2\/100g Free Alcohol≤1% Heavy Metals (as Pb)≤20 mg\/kg Arsenic (As)≤2 mg\/kg Safety and Ecotoxicological Parameters Acute Toxicity (Rat Oral LD50)>2000 mg\/kg Fish LC50 (96h)1~10 mg\/L Daphnia EC50 (48h)1~10 mg\/L Chemical StabilityStable Packaging Specifications Packaging Form50kg Plastic Drum \/ 200kg Plastic Drum \/ IBC Tote Application Recommendations Due to its HLB value of approximately 14.5 and outstanding hydrophilicity, OP-13 is particularly suitable for O\/W emulsification systems. In industrial cleaning formulations, the recommended dosage is 2%~8%, effectively removing heavy grease and oils. In textile printing and dyeing processing, when used as a scouring and penetrating agent, the recommended dosage is 0.5~3 g\/L. In pesticide emulsifiers, it is often compounded with emulsifiers with lower HLB values to achieve broader emulsification adaptability. In emulsion polymerization, the recommended dosage is 1%~5% of the monomer weight, helping to precisely control latex particle size. At low temperatures, the product may become a paste. It can be preheated at 25~35°C before use and stirred evenly to restore fluidity without affecting performance. In alkaline systems such as metalworking fluids and leather degreasing, OP-13 exhibits excellent alkali stability, and compounding with anionic surctants can produce synergistic effects. Precautions The product is irritating to skin and eyes (Skin Irritation Category 2, Eye Damage Category 2A). Protective gloves and safety goggles should be worn during operation. The product is toxic to aquatic organisms (Acute Aquatic Toxicity Category 2). Do not discharge directly into water bodies or the environment. Keep the container tightly sealed during storage, in a cool, dry, and well-ventilated place, away from strong oxidizers and food items. Flash point >150°C, non-flammable, but still keep away from open flames and high heat sources. Safety technical parameters (such as LD50, LC50, etc.) are sourced from the Guoli Chemical product database. Please also refer to the product SDS for specific operations.

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Property	Value
CAS No.	9036-19-5
Molecular Formula	C8H17C6H4O(CH2CH2O)nH, n≈13
Appearance	Colorless to pale yellow oily liquid or paste
Ionic Type	Nonionic
Avg. Molecular Weight	Approx. 779
Cloud Point	105~115°C
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	30~32
CMC	0.1~0.3
Acid Value	≤1
Saponification Value	≤1
Hydroxyl Value	~72
Moisture	≤1.0
Density	1.06
Kinematic Viscosity	2000~4000
Refractive Index	1.490
Flash Point	>150
Hygroscopicity	Hygroscopic
Chemical Stability	Stable
Penetration	~30 s (canvas disc method)
Foam Property	Medium foam
Alkali Resistance	Alkali resistant
Viscosity	2000~4000
Melting Point	~20~25
Low Shear Viscosity	2000~4000
Solid Content	≥99
Free Alcohol	≤1
Heavy Metal	≤20
Arsenic	≤2