overview
Common Name: Tween 60 / Polyoxyethylene (20) sorbitan monostearate
CAS Number: 9005-67-8
EINECS Number: 215-664-9
Molecular Formula: C64H126O26
Molecular Weight: 1311.65
Polysorbate 60 is a nonionic surfactant belonging to the polysorbate family. It is produced by the ethoxylation of sorbitol and sorbitan with approximately 20 ethylene oxide units, followed by esterification with stearic acid. The resulting product is a viscous liquid with a pale-yellow to yellow appearance and a mild characteristic odor. Polysorbate 60 is readily soluble in water and ethanol, but not soluble in most lipid-based media, making it effective for use in oil-in-water emulsions with moderate lipophilicity.
Molecular structure description
- A sorbitan (sorbitol-derived) core;
- Approximately 20 ethylene oxide units forming the hydrophilic segment;
- A stearate (C₁₈ fatty acid) ester group comprising the lipophilic segment.
This amphiphilic structure allows the molecule to effectively interact with both aqueous and oil phases, facilitating emulsification, dispersion, and solubilization in food systems.
Specifications
| Test Indicator | Unit | Min Value | Max Value |
|---|---|---|---|
| Saponification Value | mgKOH/g | 45 | 55 |
| Hydroxyl Value | mgKOH/g | 81 | 96 |
| Acid Value | mgKOH/g | - | 2 |
| Moisture | % | - | 3 |
| Residue on Ignition | w% | - | 0.25 |
| Oxyethylene Group | w% | 65 | 69.5 |
| Arsenic | mg/kg | - | 3 |
| Lead | mg/kg | - | 2 |
Applications
Polysorbate 60 functions as an efficient emulsifier, dispersant, and solubilizer in various food products. It is particularly valuable when moderate oil-in-water system stability and flavor dispersion are required.
Application Features
- Offers balanced emulsifying strength suited for many food matrices.
- Enhances dispersion of lipophilic ingredients such as flavor oils in aqueous systems.
- Compatible with formulation combinations, enabling synergistic effects with other emulsifiers (e.g., polysorbate-20, polysorbate-80, sorbitan esters) to improve emulsification and stability.
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:
Sorbitan Monolaurate 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
