Chemical Name: Polyoxyethylene (20) sorbitan monooleate
International Nomenclature: Polysorbate 80
CAS No.: 9005-65-6
Molecular Formula: C₆₄H₁₂₄O₂₆
Parameter | Specification Range | Remarks |
---|---|---|
Appearance (25°C) | Amber viscous oily liquid | - |
Hydroxyl Value (mgKOH/g) | 65–82 | Indicates hydroxyl group content |
Saponification Value (mgKOH/g) | 43–55 | Reflects ester content |
Moisture Content (%) | ≤3 | - |
Acid Value (mgKOH/g) | ≤2.0 | - |
HLB Value | 15 | Highly hydrophilic |
Note | Tested in 5% NaCl solution | Good salt tolerance |
Tween 80 is a versatile nonionic surfactant with the following properties and uses:
Solubility:
Soluble in water, methanol, and ethanol; insoluble in mineral oils.
Functions as an emulsifier, dispersant, wetting agent, solubilizer, and stabilizer.
Industrial Applications:
Pharmaceuticals/Cosmetics/Food: Widely used in formulations.
Polyurethane Foam: Acts as a stabilizer and foaming aid.
Synthetic Fibers: Serves as an antistatic agent and intermediate in fiber oils.
Photographic Films: Used as a wetting and dispersing agent.
Textiles: Emulsifies silicone oils for waterproofing; often blended with Span 80 (S-80).
Oilfield: Functions as an emulsifier, paraffin inhibitor, viscosity reducer, and wellbore treatment agent.
Machinery: Components in precision machine tool coolants and lubricants.
Synthetic Origin:
Artificially synthesized nonionic emulsifier, approved for use in cosmetics, food, and pharmaceuticals.
Packaging:
200 kg iron drums
50 kg plastic drums
Storage:
Store in a dry, ventilated area; handle as a general chemical.
Shelf Life: 2 years.