overview
Common Name: Tween 20 / Polyoxyethylene (20) sorbitan monolaurate
CAS Number: 9005-64-5
EINECS Number: 500-018-3
Molecular Formula: C₂₆H₅₀O₁₀
Molecular Weight: ~522.67 g/mol
Polysorbate 20, known as Tween 20, is a nonionic surfactant derived from the ethoxylation of sorbitan monolaurate. It is widely used as an oil-in-water (O/W) emulsifier, solubilizer and dispersing agent in food, cosmetics, pharmaceuticals, and industrial formulations. Polysorbate 20 offers excellent compatibility with a wide range of ingredients, gentle skin feel, and good stabilization performance in low- to moderate-oil systems.
Molecular structure description
Hydrophilic part: Polyoxyethylene (20) sorbitan head group
HLB value: ~16.7 (highly hydrophilic, suitable for oil-in-water emulsions)
Specifications
It is a nonionic surfactant composed of polyoxyethylene (20) sorbitan esterified with lauric acid, producing an amphiphilic molecule capable of reducing surface tension and stabilizing emulsions.
It is miscible with water, ethanol, and propylene glycol; soluble in methanol and ethyl acetate; and slightly soluble in vegetable oils.
When dispersed in water, it forms clear to slightly opalescent solutions. Owing to its high hydrophilicity and excellent emulsifying power, it is widely used in oil-in-water emulsions in food, cosmetics, and pharmaceuticals.
| Test Item | Unit | Min Value | Max Value |
|---|---|---|---|
| Saponification Value | mgKOH/g | 40 | 50 |
| Iodine Value | mgKOH/g | 96 | 108 |
| Acid Value | mgKOH/g | — | 2 |
| Moisture | % | — | 3 |
| Ignition Residue | w% | — | 0.25 |
| Ethylene Oxide | % | 70 | 74 |
| Lead | mg/kg | — | 2 |
Applications
It works effectively in oil-in-water emulsions, especially for incorporating essential oils and fragrances into aqueous systems.
Its mildness and high hydrophilicity make it ideal for products requiring gentle skin contact and stable emulsions.
Emulsification Efficiency – Stable W/O Emulsions
Sorbitan esters are highly effective in forming stable water-in-oil emulsions. Ideal for margarine, creams, and ointments, they help maintain consistency and prevent separation over time.
Mild & Skin-Friendly – Ideal for Cosmetics
Widely used in lotions, creams, and makeup products, sorbitan esters are non-irritating and suitable for sensitive skin. They provide smooth textures and enhance product stability.
Food Grade & Safe – Emulsifiers for Processing
Approved for food use, they act as emulsifiers in sauces, dairy products, and spreads. Improve mouthfeel, extend shelf life, and maintain homogeneity of processed foods.
Pharmaceutical Use – Enhances Drug Stability
Used in medicinal creams, gels, and suspensions, sorbitan esters help deliver oil-soluble actives effectively. They improve bioavailability and ensure long-term formulation stability.
storage & package
Storage:
Store in a cool, dry, and well-ventilated area, away from direct sunlight and sources of heat.
Avoid contact with harmful or incompatible substances. Handle with care during transportation to prevent leakage or contamination.
Transportation:
Transport as a general chemical product, following standard safety and handling procedures.
Package:
Polysorbate 20 is packed in high-quality PE drums with double-seal lids.
Standard packaging sizes include 25kg/drum, 200kg/drum, and 1000kg IBC tote to meet different usage needs.
25 Kg /drum
200kg/drum
