overview
Common Name: Tween 85
CAS Number: —
EINECS Number: —
Molecular Formula: —
Molecular Weight: —
Polysorbate 85 (Tween 85) is a nonionic surfactant used as an emulsifier and solubilizer particularly for formulations containing higher levels of unsaturated fatty acids or heavier oils. It provides strong emulsification and dispersing action, improves compatibility with lipophilic actives, and is applied in cosmetics, pharmaceuticals and industrial emulsions requiring durable stability.
Molecular structure description
Hydrophilic part: Polyoxyethylene (20) sorbitan head group
HLB value: ~11.0 (balanced emulsifier for mixed-phase systems, suitable for both oil-in-water and water-in-oil emulsions)
Specifications
It is a nonionic surfactant composed of polyoxyethylene (20) sorbitan esterified with trioleate, yielding a balanced amphiphilic molecule.
It is soluble in water and ethanol; slightly soluble in vegetable oils; and insoluble in mineral oil.
When dispersed in water, it forms creamy or slightly hazy emulsions. Its balanced hydrophilic-lipophilic properties make it useful in both oil-in-water and water-in-oil formulations across food, cosmetics, and industrial applications.
| Test Parameter | Unit | minimum | maximum |
|---|---|---|---|
| Saponification Value | mgKOH/g | 83 | 98 |
| Hydroxyl Value | mgKOH/g | 40 | 60 |
| Acid Value | mgKOH/g | 2 | |
| Moisture Content | % | 3 |
Applications
It is effective in both oil-in-water and water-in-oil systems, especially with unsaturated oils and fats.
Its dual-phase compatibility makes it suitable for versatile formulations requiring stability and performance.
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 85 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
