Tween 85 is a multifunctional nonionic surfactant, characterized by excellent emulsifying, solubilizing, wetting, and dispersing capabilities, combined with outstanding chemical stability and broad compatibility.
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\nDetailed Description
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Tween 85 (Polyoxyethylene (20) sorbitan trioleate, CAS No.: 9005-70-3) is a light yellow to amber viscous liquid belonging to the nonionic surfactant category. Its molecular structure combines hydrophilic polyoxyethylene chains with lipophilic trioleate groups, enabling effective reduction of oil-water interfacial tension, particularly outstanding in oil-in-water (O/W) emulsifying systems.
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This product exhibits excellent tolerance to acids, alkalis, and hard water, maintaining stable performance under complex process conditions without failure due to water quality or pH fluctuations. Additionally, Tween 85 has good compatibility with various ionic and nonionic auxiliaries, showing no antagonistic effects in compounding systems, offering high formulation flexibility, making it a widely preferred additive choice in many industrial fields.
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In terms of safety, Tween 85 is classified as a non-hazardous substance with a flash point above 149°C (closed cup), making it a non-flammable liquid with low storage and transportation risks. It may only cause mild eye irritation, and conventional industrial protective measures are sufficient for safe handling.
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Technical Parameters
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\n | Parameter | Specification/Description |
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\n | Chemical Name | Polyoxyethylene (20) sorbitan trioleate |
\n | CAS No. | 9005-70-3 |
\n | Aliases | Polysorbate 85, Tween 85, Polysorbate 85, E436 |
\n | Ionic Type | Nonionic surfactant |
\n | Appearance | Light yellow to amber viscous liquid |
\n | HLB Value | Not available (recommend actual measurement) |
\n | Cloud Point | Not available |
\n | Flash Point | > 149 °C (closed cup), non-flammable liquid |
\n | GHS Classification | Not classified as hazardous substance, no pictograms, no signal word |
\n | Recommended Storage Temperature | 5°C – 40°C |
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Application Recommendations
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Tween 85 is used across seven major industrial sectors as an emulsifier, solubilizer, wetting agent, and dispersant:
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\n - Pesticide Formulations: Disperses oil-soluble pesticides uniformly in water, enhancing spread and penetration on plant surfaces, thus improving efficacy.
\n - Cosmetics: Used in creams, lotions, and makeup removers to create refreshing, non-greasy oil-in-water emulsifying systems.
\n - Food Processing: Acts as an emulsifier and solubilizer in baking fats, ice cream, and sauces (food grade code E436), improving texture and mouthfeel.
\n - Textile Auxiliaries: Used as a component of spinning oils and dyeing auxiliaries, imparting smoothness and antistatic properties to fibers, promoting uniform dye dispersion.
\n - Metalworking Fluids: Formulates semi-synthetic and emulsifying cutting fluids, rapidly emulsifying base oils for excellent lubrication and cooling performance.
\n - Coatings and Inks: Promotes monomer dispersion in emulsion polymerization, aiding in forming stable polymer emulsions, improving storage stability and film formation.
\n - Petroleum Extraction: Used as an emulsifier in drilling fluids and enhanced recovery fluids, improving rheology and cuttings carrying capacity.
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Precautions
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\n - Wear chemical safety goggles during operation to prevent liquid splashes into eyes, and wash hands thoroughly after handling.
\n - Store in a cool, dry, well-ventilated area, keep container tightly closed, away from strong oxidants, heat sources, and open flames.
\n - Recommended storage temperature: 5°C–40°C to prevent freezing or thermal degradation.
\n - May show compatibility differences with high-concentration electrolytes or extreme pH conditions in certain systems; small-scale tests are recommended before compounding.
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