Question 1

Is Tween T-85 harmful to humans? Does it have an impact on the environment?

Accepted Answer

Tween T-85 is of low toxicity and is a non-hazardous substance. Its main potential impact on humans is only mild eye irritation; it is biodegradable in the environment, but large discharges still require control. Detailed Explanation Tween T-85 (Polyoxyethylene (20) sorbitan trioleate) is not classified as a hazardous substance under GHS. According to EU Regulation EC 1272/2008, this product has no pictograms, no signal word, and no hazard statements, making it a non-ionic surctant with high safety. Its flash point is > 149 °C (closed cup), and it is a non-flammable liquid, posing no risk of combustion or explosion under normal use conditions. In terms of human health, the main potential impact of Tween T-85 is possible mild eye irritation. Prolonged or repeated skin contact may cause mild discomfort in some sensitive individuals. This product is not classified as a skin corrosive/irritant, respiratory sensitizer, carcinogen, or reproductive toxicant. Nevertheless, it is recommended to wear chemical safety goggles during handling, avoid direct contact with eyes and prolonged skin contact, and wash hands thoroughly after handling. In terms of the environment, Tween T-85, as a polyoxyethylene non-ionic surctant, has a certain degree of biodegradability and can be gradually decomposed by microorganisms in the natural environment. However, it should be noted that its degradation rate and extent are affected by environmental conditions, and large untreated discharges may still have short-term impacts on aquatic ecosystems (e.g., altering water surce tension, affecting dissolved oxygen, etc.). Therefore, the safety instructions explicitly require: Do not discharge directly into the environment. Waste should be disposed of by recycling or incineration through qualified institutions, and local and national environmental regulations should be followed. Technical Parameters ParameterData GHS hazard classificationNot classified as hazardous substance Signal wordNone PictogramNone Health impactPossible mild eye irritation Flash point (closed cup)> 149 °C FlammabilityNon-flammable liquid BiodegradabilityBiodegradable (specific degradation rate not available for this parameter) Application Recommendations Given the low toxicity of Tween T-85, it is widely used in food processing, cosmetics, and personal care products in direct contact with the human body, and is approved as a food additive (E436) both domestically and internationally. When used in pesticide formulations and industrial fields, there is also no need for excessive concern about health risks, but standard operating procedures should still be followed. Precautions Wear chemical safety goggles during handling to prevent liquid splashes into eyes If accidentally enters eyes, rinse immediately with plenty of clean water for at least 15 minutes; seek medical attention if irritation persists Avoid prolonged skin contact; wash hands thoroughly after handling Do not discharge waste liquid or packaging directly into sewers or water bodies; dispose of through qualified institutions in accordance with the law Storage temperature recommended at 5°C – 40°C; keep containers tightly closed

Question 2

What should be done if problems occur during the use of Tween T-85? How to obtain technical support?

Accepted Answer

If you encounter usage issues, it is recommended to first check common causes based on product characteristics; if the problem remains unresolved, please contact Guoli Chemical directly for professional technical support. Common usage issues self-check Tween T-85 is a stable nonionic surctant. If problems arise during use, they are usually related to operating methods, storage conditions, or system compatibility. The following table summarizes common phenomena and corresponding troubleshooting directions: Common Issue Possible Cause Recommended Check Emulsion separation, instability HLB value mismatch; insufficient dosage; oil/water phase ratio imbalance; sudden temperature change The HLB value of Tween T-85 is about 11, suitable for O/W emulsions. Recommended dosage: start adjusting from 2%~5%; ensure thorough and uniform stirring Difficulty in water dispersion, clumping Product is oil-soluble, added directly in large amounts to water Pre-dissolve in oil phase/solvent, or add slowly to water while stirring rapidly. Water temperature is recommended to be kept at 20~30°C Product becomes cloudy, precipitates Storage temperature too low ( Low temperature may cause increased viscosity or cloudiness, which is a physical change. Restore to room temperature (20~30°C), stir evenly before use; keep container sealed Excessive foaming System compounded with high-foaming additives; excessive stirring shear Tween T-85 itself is a low-foaming product. You can appropriately reduce stirring speed or add defoamer as an aid Incompatibility with other raw materials in the system Presence of strong acid, strong alkali, or high concentration salt Tween T-85 tolerates general acids, alkalis, and hard water, but under extreme conditions, a compatibility small-scale test is still recommended first How to obtain technical support from Guoli Chemical If the problem still cannot be solved after the above self-check, Guoli Chemical provides you with professional technical service support: Review product documents: Please first check the "Certificate of Analysis (COA)" and "Safety Data Sheet (SDS)" provided with the shipment, which usually have detailed after-sales contact information printed on them. Contact your sales manager: Call or contact the Guoli Chemical sales manager who handles your account directly. They can quickly coordinate with technical engineers to answer your questions. Leave a message on the official website: Visit the official website of Hai'an Guoli Chemical Co., Ltd., submit your specific issue in the "Contact Us" or "Technical Support" section, and technical staff will respond within working days. To help you identify the problem ster, please prepare the following information when contacting technical support: Product batch number (see the container body) Specific usage formula or application process Description of the specific phenomenon of the issue (photos or videos are better) Approximate temperature and humidity of the storage environment Application suggestions According to Guoli Chemical's database, Tween T-85 is very mature in applications in multiple fields. Here are key operation tips for each scenario: Pesticide formulations: When used as an emulsifier, it is recommended to first dissolve and mix Tween T-85 with the technical concentrate, then dilute with water, which can significantly enhance the spreading and penetration of the spray solution. Cosmetics: For forming oil-in-water systems, it is recommended to heat the oil phase to 70~75°C and the water phase to 75~80°C, mix well, then homogenize and emulsify for a refreshing, non-greasy skin feel. Metalworking fluids: For emulsifying base oils, the recommended dosage ranges from 5% to 15% depending on the type of base oil, quickly forming a stable translucent working fluid. Paint emulsion polymerization: As a pre-emulsification emulsifier, it can be used in combination with anionic emulsifiers to improve monomer dispersion stability and final film formation performance. Precautions Operation protection: The product may cause mild eye irritation. It is recommended to wear chemical safety goggles during operation and thoroughly wash hands afterwards. Storage environment: Storage temperature must be maintained at 5°C–40°C, avoid freezing or high-temperature degradation; keep away from strong oxidizers. The product is hygroscopic; seal tightly as soon as possible after opening. First aid measures: If accidentally gets into eyes, immediately rinse with plenty of water for at least 15 minutes and seek medical attention; if accidentally ingested, do not induce vomiting, seek medical attention immediately. Disclaimer: The above suggestions are based on Guoli Chemical's product database and general chemical knowledge. Actual effects may vary depending on the specific formulation process; it is recommended to conduct small-scale experiments first.

Question 3

How to purchase Tween T-85? What is the minimum order quantity?

Accepted Answer

To purchase Tween T-85, it is recommended to contact the Guoli Chemical sales team directly for the latest quotation and detailed procurement process. There is no unified minimum order quantity; it is usually determined through negotiation between both parties. Detailed Description Tween T-85 (Polysorbate 85) is a conventional nonionic surctant product from Guoli Chemical, primarily sold to industrial customers. The price information in the current product database is for reference only. The actual transaction price shall be based on the real-time quotation provided by the sales team. You can contact the sales staff through Guoli Chemical's official website, phone, or enterprise WeChat, and specify the required quantity, application field, and packaging requirements to obtain an accurate quotation. Before purchasing, it is recommended to confirm whether the technical indicators of the product meet the formulation requirements. Tween T-85 has an HLB value of approximately 11. Its appearance is a pale yellow to amber viscous liquid, CAS number is 9005-70-3, and purity is ≥97%. If sample testing is needed, you can communicate with the sales staff regarding sample delivery. Technical Parameters Parameter ItemIndicator AppearancePale yellow to amber viscous liquid Active Content≥97% HLB ValueApproximately 11 Acid Value≤2 mgKOH/g Saponification Value45~55 mgKOH/g Hydroxyl Value65~85 mgKOH/g Moisture Content≤3.0% Density (25°C)1.02~1.08 g/cm³ Flash Point (Closed Cup)>150°C Packaging Specification50kg/200kg plastic drum Application Suggestions This product is widely used in pesticide emulsification, cosmetic creams/lotions, food processing emulsification, textile auxiliaries, metalworking fluids, paint emulsion polymerization, and petroleum extraction. For specific applications, refer to the formulation guide provided by Guoli Chemical or consult the technical team. Precautions The product is non-hazardous, but may cause mild eye irritation. It is recommended to wear safety goggles during operation. Store in a cool, dry, and well-ventilated place. Keep the container tightly sealed. The recommended storage temperature is 5°C–40°C. Packaging is in 50kg/200kg plastic drums. No clear information on other specifications is available. For special packaging, please communicate with the sales team in advance. When placing an actual order, please confirm the minimum order quantity and whether sample requests are supported. The data source does not specify a fixed minimum order quantity for this product. Please refer to the information provided by the sales staff.

Question 4

Does Tween T-85 meet environmental requirements? Can a test report be provided?

Accepted Answer

Tween T-85 is classified as a non-hazardous substance and is non-flammable in terms of safety, but its full environmental compliance needs to be ultimately confirmed by customers based on specific application scenarios; regarding test reports, the Guoli Chemical database currently does not include a dedicated environmental test report file for this product. Detailed Explanation Tween T-85 (Polyoxyethylene (20) sorbitan trioleate, CAS: 9005-70-3) is a nonionic surctant. According to the safety instructions in the Guoli Chemical database, based on the EC 1272\/2008 standard, this product is not classified as a hazardous substance and has a flash point > 150°C (closed cup), making it a non-flammable liquid. From the perspective of basic physical and chemical hazard properties, it is not classified as a dangerous chemical during storage and transportation, which is beneficial for the environmental compliance of logistics and warehouse management. Regarding environmental disposal, the database clearly states that waste disposal should be carried out in accordance with local, national, and international environmental regulations, and it is not recommended to discharge directly into the environment. It can be sent to qualified waste treatment cilities for recycling or incineration. This indicates that the product itself does not possess extreme toxicity or acute aquatic toxicity, but it still needs to be handled within the framework of industrial "three wastes" compliance. As for whether it meets the registration or restriction requirements of specific regulations (such as EU REACH, RoHS, China's New Chemical Substance Environmental Management Regulations, etc.), the database does not list detailed certification information. It is recommended that users contact Guoli Chemical sales representatives to obtain corresponding compliance statements or ingredient declarations based on the specific export destination or application industry. Regarding test reports, the current Guoli Chemical product database does not include SGS test reports, biodegradability test reports, or other third-party environmental test documents for this product. If such specific reports are needed, it is recommended to directly contact Guoli Chemical's technical or sales department to obtain the latest batch certificate of analysis (COA) or arrange third-party testing as required. Technical Parameters ParameterValue \/ Description Ionic TypeNonionic surctant AppearanceLight yellow to amber viscous liquid GHS Hazard ClassificationNon-hazardous substance (no pictogram, no signal word) Flash Point (Closed Cup)>150°C (Non-flammable liquid) HLB Value11 pH Value (1% Aqueous Dispersion)5.0 ~ 7.0 Heavy Metal Content (as Pb)≤10 mg\/kg Arsenic Content (As)≤2 mg\/kg Chemical StabilityStable, avoid strong acids, strong bases, and high temperatures Application Recommendations Application selection recommendations from an environmental perspective: Pesticide Formulation Industry: If used for export registration, especially for the EU or highly regulated markets, it is recommended to request a statement of absence for restricted substances such as ethylene glycol, diethylene glycol, and dioxane residues in the product in advance, to ensure that the final pesticide formulation meets the impurity limit requirements of the importing country. Cosmetics and Food Industry: Tween T-85 is also known as Polysorbate 85 and, in some regulations, is designated as food additive E436. When used in such oral or topical fine chemicals, it is essential to confirm the product purity (effective content ≥97% per this database) and whether it has the corresponding food-grade\/cosmetic-grade production qualification certificates. This is critical for passing the final product's environmental and toxicological review. Industrial Cleaning and Metalworking: In the waste liquid treatment stage, due to its HLB value of 11 and good water dispersibility, the chemical oxygen demand (COD) is relatively high. It is recommended that end-user ctories perform demulsification and biochemical treatment on the working fluid before direct discharge. Before purchase, customers can request from Guoli Chemical the theoretical oxygen demand (ThOD) or reference biodegradation rate for this product to be used in the company's own environmental impact assessment calculations. Precautions Environmental Regulation Adaptation: This product is not listed in the conventional "dangerous chemicals" inventory, but this does not mean it is exempt from inspection or reporting under any environmental regulations. When dealing with wastewater discharge, local COD total emission control requirements must be complied with. Obtaining Test Reports: The database currently does not have ready-made electronic test reports. If SGS, third-party full composition analysis, VOC content testing, or biodegradability reports are needed, it is necessary to directly contact Guoli Chemical customer service or business specialists for offline supplementary requests. Handling and Storage: Although the product itself is not classified as hazardous, if a spill is not properly handled and enters water bodies, it can consume dissolved oxygen in the water, causing environmental harm. It is recommended to have absorbent materials (such as vermiculite, sand) readily available at the operation site to prevent leaks from entering drains.

Question 5

What are the advantages of Tween T-85 compared to other similar products?

Accepted Answer

According to the technical data from Guoli Chemical, the core advantage of Tween T-85 (Polyoxyethylene (20) Sorbitan Trioleate) lies in its **unique molecular structure** — the molecule contains three long-chain oleic acid groups. Compared to monooleate-type Tween products (such as Tween-80), it exhibits stronger **lipophilicity, a lower HLB value, and excellent W/O emulsifying ability**, making it particularly suitable for emulsifying high-oil-content systems. ## Structure Determines Performance Advantages Tween T-85 is an adduct of sorbitan trioleate and 20 moles of ethylene oxide. Due to its hydrophobic group containing three oleic acid chains (C18 unsaturated tty acid), its molecular weight is approximately 1900, much larger than the ordinary Tween series, giving it unique performance characteristics. ## Comparison with Similar Products | Comparison Item | Tween T-85 | Tween-80 (Monooleate) | Tween-60 (Monostearate) | Tween-20 (Monolaurate) | |---------|---------|-------------------|---------------------|---------------------| | HLB Value | **11** | 15.0 | 14.9 | 16.7 | | Appearance | Light yellow to amber liquid | Yellow oily liquid | Light yellow paste/solid | Yellow oily liquid | | Lipophilicity | **Strong (trioleate chain)** | Moderate | Moderate to strong | Weak | | Water Solubility | Dispersible in water | Soluble in water | Soluble in water | Easily soluble in water | | Surce Tension (0.1%) | ~38 mN/m | ~42 mN/m | ~43 mN/m | ~36 mN/m | | CMC (25°C) | 0.03 g/L | 0.013 g/L | 0.018 g/L | 0.05 g/L | | Main Emulsification Type | O/W and W/O dual | Primarily O/W | Primarily O/W | O/W | ## Five Outstanding Advantages of Tween T-85 1. **Stronger Lipophilic Dissolving Ability** Due to the three oleic acid chains in the molecule, Tween T-85 is highly soluble in oils and organic solvents, providing higher solubilization and emulsification efficiency for oily substances such as mineral oils, vegetable oils, and tty acid esters. It enables stable formulations with higher oil content in fields like pesticide emulsifiable concentrates, cosmetic makeup removers, and metalworking oils. 2. **Excellent Low-Foaming Property** Tween T-85 is a low-foaming surctant, offering significant advantages in processes requiring rapid defoaming or low-foam operation (e.g., metal cutting fluid circulation systems, spray cleaning), reducing operational issues caused by foaming. 3. **Good Acid and Alkali Tolerance** According to Guoli Chemical data, Tween T-85 exhibits good tolerance to acids, alkalis, and hard water, maintaining emulsification stability over a wide pH range and under complex water quality conditions, outperforming some ionic surctants. 4. **Broad Formulation Compatibility** As a nonionic surctant, Tween T-85 is compatible with various anionic, cationic, and nonionic additives, offering high flexibility in compounding to meet multi-component formulation design needs. 5. **Safe Environmental Properties** The product is not classified as a hazardous substance, with a flash point >150°C (closed cup), non-flammable liquid, low heavy metal (≤10 mg/kg) and arsenic (≤2 mg/kg) content, meeting food additive (E436) standards, ensuring high application safety in food processing and cosmetics. ## Recommended Dosage Reference | Application Field | Recommended Dosage (Percentage in Formulation) | Usage Method | |---------|-------------------|---------| | Pesticide Emulsifier | 3%-8% | Pre-mix with oil phase | | Cosmetic Creams/Lotions | 1%-5% | Heat dissolve in oil phase | | Metal Cutting Fluids | 5%-15% | Pre-mix with base oil | | Paint Emulsion Polymerization | 1%-3% (based on monomer) | Add to water phase | | Food Emulsification & Solubilization | 0.1%-1% | Blend with oily ingredients | | Drilling Fluid Emulsifier | 0.5%-2% | Add directly to circulation system | ## Precautions - Tween T-85 is hygroscopic; once opened, seal and store promptly. Recommended storage temperature: 5°C–40°C. - The pour point is below 0°C; it remains liquid at low temperatures for easy use. However, prolonged low-temperature storage in winter may cause cloudiness, which can be restored by warming to room temperature. - For W/O emulsification, it is recommended to compound with sorbitan ester emulsifiers (e.g., Span-85) to further improve emulsion stability. - Aqueous dispersions above 5% are unstable. In practical applications, it is advisable not to dilute with water beyond 4%, or use oil-soluble formulations.

Question 6

How to store Tween T-85? What is its shelf life?

Accepted Answer

Tween T-85 should be stored in a cool, dry, and well-ventilated place, keeping the container tightly closed. The recommended storage temperature is 5°C–40°C; under unopened and properly stored conditions, the typical shelf life is 2 years. Detailed Description Tween T-85 (Polyoxyethylene (20) sorbitan trioleate) is a nonionic surctant with relatively stable chemical properties and is classified as a non-hazardous, non-flammable substance. To ensure long-term stability of product performance, the choice of storage environment is crucial. The product should be kept away from heat sources, sparks, open flames, and hot surces, and avoid contact with incompatible substances such as strong oxidizing agents, strong acids, and strong bases to prevent degradation or adverse reactions. Regarding shelf life, the Guoli Chemical product database currently does not have explicit shelf life parameters for this product. According to general industry standards, the typical shelf life for Tween series nonionic surctants under unopened and recommended storage conditions is generally 2 years from the date of manucture. It is recommended that users refer to the production batch number and expiration date label on the product packaging. Products beyond their shelf life should be tested and verified for performance before use. Storage Conditions Summary Storage ctorSpecific Requirement Environmental RequirementCool, dry, well-ventilated Temperature Range5°C – 40°C (prevent freezing or thermal degradation) Container StatusKeep tightly closed to prevent moisture and impurities from entering Keep Away FromHeat sources, sparks, open flames, hot surces Incompatible SubstancesStrong oxidizing agents, strong acids, strong bases Labeling RequirementClearly label containers to avoid misuse Application Recommendations When opening and dispensing Tween T-85, minimize the time the container is left open to avoid long-term exposure to air, which may cause moisture absorption or contamination. Immediately close the container after use and use clean tools for dispensing to prevent cross-contamination. If the product shows signs of layering or cloudiness after long-term storage, it is recommended to stir evenly and take a sample for testing. Confirm that key performance indicators such as emulsification and solubilization meet the requirements before use. Precautions This product has a flash point >149°C (closed cup). Although it is a non-flammable liquid, it may still produce harmful gases such as carbon monoxide and carbon dioxide when involved in a fire. The product may cause slight eye irritation. It is recommended to wear chemical safety goggles during handling and wash hands thoroughly after operation. Disposal should follow local and national environmental regulations. Entrust a qualified waste treatment agency for recycling or disposal, and do not discharge directly into the environment. If the product is repackaged or refilled, the shelf life may be shortened. It is recommended to use the repackaged product as soon as possible.

Question 7

What safety precautions should be taken when using Tween T-85?

Accepted Answer

Tween T-85 is classified as a non-hazardous substance, but routine protective measures are still required, with emphasis on eye protection, storage conditions, and operating procedures. Detailed Explanation Tween T-85 (Polyoxyethylene (20) Sorbitan Trioleate) is not classified as a hazardous substance under the GHS classification system, with no pictograms, signal words, or hazard statements. Its flash point is greater than 149°C (closed cup), making it a non-flammable liquid with relatively high overall safety. However, this does not mean that basic safe handling requirements can be ignored—this product may cause mild eye irritation, and protective measures are still recommended during handling. From a health impact perspective, the main potential risks of Tween T-85 are associated with eye contact and prolonged skin contact. Liquid splashes into the eyes may cause mild irritation, such as persistent pain, tearing, or photophobia; prolonged skin contact may cause redness or an irritant reaction. Inhalation of vapors and mist is generally low-risk under normal conditions, but in high-temperature or atomization operations, adequate ventilation should be ensured. If ingested, do not induce vomiting; immediately rinse the mouth with water and seek medical attention. For storage, it is recommended to keep the product in a cool, dry, well-ventilated area, with temperature controlled between 5°C and 40°C, preventing freezing or thermal degradation. Containers should be kept tightly closed, away from incompatible materials such as strong oxidizers, strong acids, and strong bases, as well as heat sources, sparks, open flames, and hot surces. Key Safety Operation Points Body Part to ProtectRecommended MeasureExplanation EyesChemical safety goggles or ce shieldPrevent liquid splashes into eyes; this is the most important protective item SkinProtective gloves, protective clothingAvoid prolonged direct contact; wash hands thoroughly after handling RespiratoryMaintain good ventilation onlyNo special respiratory protection needed for routine handling; increase exhaust during atomization operations Work environmentNo eating, drinking, or smokingStrictly adhere during operations to avoid accidental ingestion Emergency Response Measures Eye contact: Immediately rinse gently with plenty of water for at least 15 minutes, lifting the upper and lower eyelids periodically during rinsing to ensure thorough flushing. If irritation such as persistent pain, tearing, or photophobia occurs, seek medical attention immediately. Skin contact: Remove contaminated clothing and wash skin with soap and plenty of water. If irritation or redness persists, consult a doctor. Inhalation: Move the person to fresh air and keep the airway clear. If symptoms such as difficulty breathing or persistent cough occur, seek medical attention immediately. Ingestion: Rinse mouth with water. Do not induce vomiting (unless explicitly instructed by medical personnel). Contact a poison control center or seek medical attention immediately. Spill and Waste Disposal For small spills, absorb the liquid with inert absorbent materials (such as sand, vermiculite), collect it in a closed container, and dispose of it in accordance with regulations. For large spills, contain the spill area with dikes to prevent entry into drains, waterways, or low-lying areas. Use a vacuum pump or appropriate tools to collect the spilled material, and afterward wash the contaminated surce with water. Always wear goggles, protective gloves, and protective clothing when handling spills. Waste should be disposed of in accordance with local, national, and international environmental regulations and must not be discharged directly into the environment. It may be entrusted to qualified waste treatment cilities for recycling or incineration. In case of fire, although Tween T-85 is not easily flammable itself, when surrounded by flames it may produce carbon monoxide, carbon dioxide, and irritating or toxic gases. Firefighters should wear self-contained positive pressure breathing apparatus and full protective clothing. Notes This product has relatively high safety, but it is still an industrial chemical and not for consumption. Containers should be clearly labeled to prevent misuse. For long-term storage or under high-temperature conditions, it is recommended to periodically check the product's appearance. If abnormal separation or odor occurs, discontinue use. The above safety instructions are based on current knowledge. Specific workplaces should conduct risk assessments and comply with relevant regulations based on actual conditions.

Question 8

How to use Tween T-85? What is the recommended dosage?

Accepted Answer

Tween T-85 is an oil-soluble, nonionic O/W emulsifier (HLB value 11). It should first be dissolved and mixed evenly in the oil phase before being combined with the water phase for emulsification. The dosage varies by industry, typically ranging from 0.5% to 10% of the total formulation weight. Detailed Description Tween T-85 (polyoxyethylene sorbitan trioleate) is a pale yellow to amber viscous liquid. It is a nonionic surctant with an HLB value of 11, providing emulsifying, solubilizing, wetting, and dispersing functions. Due to its characteristics of being easily soluble in oils and organic solvents and dispersible in water, the standard usage method is: first, add the product to the oil phase or organic phase according to the formula, stir thoroughly until completely dissolved, then slowly add this oil phase to the water phase under stirring to form a stable oil-in-water (O/W) emulsion. If it needs to be used in combination with other emulsifiers (such as Span series), both can be added to the oil phase, stirred to dissolve, and then the emulsification process is carried out. Tween T-85 has good resistance to acids, alkalis, and hard water, and has good compatibility with various ionic and nonionic additives. It can stably exert its emulsifying function over a wide pH range and under complex process conditions. The pH value of its 1% aqueous dispersion is between 5.0 and 7.0. It is in liquid state at room temperature (melting point below 0°C), making it convenient to use directly without pre-melting. Due to its certain viscosity (300~500 mPa·s, 25°C), the viscosity may increase under low-temperature conditions in winter. It is recommended to allow it to naturally warm up at 15~25°C before use or use a water bath to gently heat (not exceeding 40°C) to restore fluidity. Prolonged heating at high temperatures is prohibited to avoid product degradation. Recommended Dosage by Industry The following are common reference dosage ranges for various application fields (based on Guoli Chemical product application experience and common formula practices across industries; actual dosage should be determined through experiments according to specific formulations): Application FieldFunctionRecommended Dosage (Percentage of Total Formulation Weight) Pesticide Formulations (EC/EW/ME)Emulsifier, Wetting Agent3%~10% Cosmetic Creams/LotionsO/W Emulsifier1%~5% Cleansing OilsHydrophilic Emulsifier5%~15% Food Processing (Baking, Ice Cream, etc.)Emulsifier, Solubilizer0.1%~1% (According to food regulations limits) Textile Auxiliaries/Spinning OilsSmoothing Agent, Antistatic Component2%~8% Metalworking Fluids (Cutting Fluids)Emulsifier3%~8% Coating Emulsion PolymerizationEmulsifier, Stabilizer1%~4% (Based on monomer weight) Oil Drilling Fluids/Stimulation FluidsEmulsifier1%~5% Application Recommendations Synergistic Combination: Tween T-85 has an HLB value of 11. When used alone and the emulsification effect is not ideal, it can be combined with low HLB emulsifiers (such as Span series, HLB≈1.8~8.6) in proportion. By adjusting the mixed HLB value to match the required HLB of the oil phase, emulsion stability can be significantly improved. Mixed HLB value = (HLB_A × W_A + HLB_B × W_B) / (W_A + W_B). Emulsification Operation Recommendations: When using a homogenizing emulsification process, first dissolve Tween T-85 in the oil phase. Under high-speed stirring (recommended 3000~5000 rpm) or high-pressure homogenization, slowly add the oil phase to the water phase. Emulsification temperature controlled at 40~60°C yields better results. After emulsification, allow to cool naturally to room temperature, avoiding rapid cooling which may cause droplet aggregation. Solubilization Use: When used for solubilizing fragrances, essential oils, or oil-soluble active ingredients, it is recommended that the mass ratio of Tween T-85 to the substance to be solubilized is 1:1~5:1. First mix both evenly, then slowly add water under stirring to dilute to the required concentration to obtain a transparent or translucent microemulsion. Precautions This product has certain hygroscopicity. After opening, use it as soon as possible and immediately seal the container after taking to prevent moisture absorption and impurity contamination. This product is non-hazardous and non-flammable (flash point > 150°C), but still keep it away from open flames and high-temperature sources. May cause mild eye irritation during operation; it is recommended to wear protective goggles; for prolonged operation, wear protective gloves. Food applications must comply with the usage scope and limits specified in GB 2760 (Tween T-85 corresponds to food additive E436/Polysorbate 85). Storage temperature is recommended to be kept at 5°C~40°C, avoiding freezing or overheating which may cause product performance degradation. The above dosage levels are empirical reference values from industry; the optimal dosage must be determined through pilot experiments in the actual formulation.

Question 9

What industries and processes is Tween T-85 mainly used in?

Accepted Answer

Tween T-85 is widely used in seven major industries including pesticides, cosmetics, food, textiles, metalworking, coatings, and petroleum extraction, primarily as an O/W type emulsifier, solubilizer, wetting agent, and dispersant. Detailed Description Tween T-85 (Polyoxyethylene (20) sorbitan trioleate, CAS: 9005-70-3) is a nonionic surctant, appearing as a light yellow to amber viscous liquid. Its molecular structure contains both hydrophilic and lipophilic groups, with a low HLB value (approximately 11), making it particularly suitable for preparing oil-in-water (O/W) emulsions. This product exhibits good tolerance to acids, alkalis, and hard water, and is compatible with various ionic and nonionic auxiliaries, thus being extremely widely used in multi-industry formulation systems. As one of the core surctant products of Guoli Chemical, Tween T-85 plays a key auxiliary role in many industrial fields due to its excellent emulsifying stability, solubilizing capacity, and wetting dispersibility, especially in processes requiring uniform dispersion of the oil phase in the water phase. Application Suggestions Application IndustrySpecific Process/UseFunctional Role Pesticide FormulationsProcessing of emulsifiable concentrates (EC), emulsions in water (EW), microemulsions (ME), etc.Emulsifier, wetting agent - disperses oil-soluble pesticides uniformly in water, enhances spreading and penetration on plant surces, improving efficacy Cosmetics and Personal CareFormulations of creams, lotions, makeup removers, cial cleansers, etc.Hydrophilic emulsifier - helps form stable O/W systems, providing a light, non-greasy feel on the skin Food ProcessingBaking ts, ice cream, salad dressings, non-dairy creamers, etc.Emulsifier, solubilizer - improves texture and mouthfeel, maintains system uniformity, food additive code E436 Textile AuxiliariesSpinning oils, dyeing and finishing auxiliaries, softener formulationsEmulsifier, antistatic agent - imparts smoothness and antistatic properties to fibers, promotes dye dispersion, improves dyeing uniformity Metalworking FluidsSemi-synthetic cutting fluids, emulsified cutting fluidsEmulsifier - quickly emulsifies base oil in water to form a stable working fluid, providing lubrication and cooling performance Coatings and InksEmulsion polymerization, preparation of water-based coatingsEmulsifier - promotes monomer dispersion and polymerization, enhances storage stability and film formation of coatings Petroleum Extraction and ProcessingDrilling fluids, enhanced oil recovery fluids, pre-treatment for crude oil demulsificationEmulsifier - helps stabilize mixing of oil-based or water-based systems, improves drilling fluid rheology and cuttings carrying capacity Technical Parameters ParameterSpecification/Description Ionic TypeNonionic surctant AppearanceLight yellow to amber viscous liquid CAS No.9005-70-3 Flash Point>149°C (closed cup), non-flammable liquid Food Additive CodeE436 Emulsion TypeO/W type (oil-in-water) Precautions Avoid contact with eyes during operation; may cause mild irritation, recommended to wear chemical safety goggles. Store in a cool, dry, well-ventilated place, recommended temperature 5°C–40°C, keep container tightly sealed. Keep away from strong oxidizers, heat sources, and open flames. Although non-flammable, combustion in a fire may produce toxic gases such as carbon monoxide. The dosage for different application fields should be optimized through experiments based on the specific formulation system; generally recommended dosage is 5%–15% of the oil phase content in the system.

Question 10

What are the physicochemical and technical parameters of Tween T-85?

Accepted Answer

Tween T-85 is an oil-soluble nonionic surctant with an HLB value of about 11. It has excellent emulsifying and dispersing properties, and is a pale yellow to amber viscous liquid at room temperature. Detailed Description Tween T-85 (Polyoxyethylene (20) sorbitan trioleate, CAS No.: 9005-70-3) is a polysorbate-type nonionic surctant produced by Guoli Chemical. Its molecular structure contains three oleic acid hydrophobic chains and twenty polyoxyethylene hydrophilic units, with an average molecular weight of about 1900. This unique structure gives it an HLB value of about 11, and it has both oil solubility and water dispersibility — it is easily soluble in mineral oil, vegetable oil, and most organic solvents, and can be dispersed in water to form an emulsion. The product has an effective content of ≥97%, a free alcohol content of ≤1%, and a moisture content of ≤3.0%, with high overall purity and strong formulation adaptability. In terms of physicochemical stability, Tween T-85 exhibits good tolerance: it is a non-flammable liquid with a flash point greater than 150°C (closed cup). It has good tolerance to acids, alkalis, and hard water, and is compatible with various ionic and nonionic auxiliaries. Its surce activity is excellent; the surce tension of a 0.1% aqueous solution is about 38 mN/m (25°C), and the critical micelle concentration (CMC) is as low as 0.03 g/L, allowing it to exert significant intercial activity even at low concentrations. As a food additive E436 variety, the safety of Tween T-85 has been fully verified. According to EC 1272/2008, it is not classified as a hazardous substance, with no hazard pictograms, no signal word, no hazard statements. The heavy metal content (as Pb) is ≤10 mg/kg, and the arsenic content is ≤2 mg/kg, meeting food-grade application requirements. Technical Parameters Parameter Category Parameter Name Technical Indicator Basic Physical Properties Appearance Pale yellow to amber viscous liquid Ion Type Nonionic surctant HLB Value 11 Solubility Easily soluble in oils and organic solvents, dispersible in water Cloud Point Not applicable (oil-soluble, aqueous dispersion has no cloud point) Physical Parameters Density (25°C) 1.02~1.08 g/cm³ Kinematic Viscosity (25°C) Approx. 300 mm²/s Low Shear Viscosity (25°C) 300~500 mPa·s Refractive Index (25°C) 1.470~1.480 Melting Point <0°C Chemical Indicators Acid Value ≤2 mg KOH/g Saponification Value 45~55 mg KOH/g Hydroxyl Value 65~85 mg KOH/g Iodine Value ≤2 g I₂/100g pH (1% aqueous dispersion) 5.0~7.0 Quality Indicators Effective Content/Solid Content ≥97% Moisture ≤3.0% Free Alcohol ≤1% Heavy Metals (as Pb) ≤10 mg/kg Arsenic ≤2 mg/kg Surce Activity Surce Tension (0.1% aqueous solution, 25°C) Approx. 38 mN/m Critical Micelle Concentration CMC (25°C) 0.03 g/L Foam Characteristics Low foaming Chemical Stability Stable, avoid strong acids, strong alkalis, and high temperatures Safety Data Flash Point (Closed Cup) >150°C Hazard Classification Non-hazardous substance (EC 1272/2008) Hygroscopicity Hygroscopic Note: The above data are from the product database of Haian Guoli Chemical Co., Ltd. Application Suggestions Based on its emulsifying properties with an HLB value of 11, Tween T-85 is particularly suitable for preparing oil-in-water (O/W) emulsions. In pesticide formulations, it is used as an emulsifier and wetting agent. The recommended dosage is 2%~8% of the total formulation, which can significantly improve the dispersion stability and leaf surce spreading of oil-soluble pesticides in water. In cosmetic creams and makeup remover formulas, the recommended addition amount is 1%~5%, forming a stable emulsion with a light skin feel. In metalworking fluids, it can be used as a primary or auxiliary emulsifier with a recommended dosage of 3%~10%, and when used with base oils, it quickly forms a stable semi-synthetic/emulsifiable working fluid. In the food industry, Tween T-85 as emulsifier E436 can be used in baking ts, ice cream, seasonings, and other products. The general usage amount should not exceed 1% of the final product weight. In coating emulsion polymerization, the recommended dosage is 1%~3% of the total monomer, which can yield a stable polymer emulsion. In textile dyeing and finishing, as a dye dispersant, the recommended dosage is 0.5%~2%. In the petroleum drilling field, the common usage amount in drilling fluid systems is 0.5%~3%. Due to its lipophilic nature, Tween T-85 only disperses in water but does not dissolve. If used in an aqueous system, it is recommended to pre-disperse with a small amount of warm water, and if necessary, use high-speed stirring or homogenization to obtain a uniform emulsion. When combined with low HLB emulsifiers (such as the Span series), the emulsification range and stability can be further expanded. Precautions Storage temperature is recommended to be maintained between 5°C and 40°C. The product's freezing point is below 0°C. Cloudiness or stratification may occur at low temperatures, but the performance remains unchanged after warming to room temperature and stirring evenly. Avoid contact with strong oxidizers, strong acids, and strong alkalis to prevent chemical degradation. This product is hygroscopic. After use, ensure the container is tightly sealed to prevent moisture absorption that may lead to excessive water content and affect quality. It is recommended to wear chemical safety goggles during operation to avoid product splashing into eyes. In case of accidental contact, immediately rinse with plenty of water for at least 15 minutes. This product is non-

Tween T-85 (Polysorbate 85)

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Property	Value
CAS No.	9005-70-3
Molecular Formula	C100H188O28 (avg.)
Appearance	Pale yellow to amber liquid
Ionic Type	Nonionic
Avg. Molecular Weight	~1900
Cloud Point	N/A (oil-soluble; insoluble in water)
Active Content	≥97%
pH Value(1%)	5.0~7.0 (1%aq. dispersion)
pH Value(5%)	N/A (5% aq. dispersion unstable)
Iodine Value	≤2
Solubility	Readily soluble in oils and organic solvents; dispersible in water
Surface Tension	~38 mN/m (0.1%aq. soln., 25°C)
CMC	0.03 g/L (25°C)
Acid Value	≤2
Saponification Value	45~55
Hydroxyl Value	65~85
Moisture	≤3.0
Density	1.02~1.08
Kinematic Viscosity	~300 mm²/s (25°C)
Refractive Index	1.470~1.480 (25°C)
Flash Point	>150°C (closed cup)
Hygroscopicity	Hygroscopic
Chemical Stability	Stable; avoid strong acids, strong alkalis and high temperature
Foam Property	Low foam
Alkali Resistance	Fairly good
Melting Point	<0°C
Low Shear Viscosity	300~500 mPa·s (25°C)
Solid Content	≥97%
Free Alcohol	≤1%
Heavy Metal	≤10 mg/kg (as Pb)
Arsenic	≤2 mg/kg

Tween T-85 (Polysorbate 85)

Product Details

Applications

Properties

Safety

Product Overview

Performance Features

Packaging and Storage

Tween / Polysorbate Applications

Product Properties

Safety

GHS

Handling

Storage

First Aid

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