overview
Common Name: —
CAS Number: 8007-43-0
EINECS Number: 232-375-2
Molecular Formula: Approx. C30H56O6 (mixture)
Molecular Weight: Approx. 520–600 g/mol (depending on composition)
Sorbitan Sesquioleate is a nonionic surfactant formed by the partial esterification of sorbitol with approximately 1.5 moles of oleic acid.
It acts primarily as a water-in-oil (W/O) emulsifier and solubilizer, commonly used in cosmetic, personal care, pharmaceutical, and industrial formulations.
It is particularly effective in systems requiring enhanced oil phase stability and emollient properties, making it ideal for creams, ointments, and oil-based products.
Molecular structure description
Hydrophilic part: Sorbitan (dehydrated sorbitol) head group
HLB value: ~3.7 (lipophilic, ideal for water-in-oil emulsions)
Specifications
Thanks to its low HLB value (around 3.7), Sorbitan Sesquioleate is widely used to stabilize water-in-oil emulsions and improve spreadability and moisturizing effects in topical products. It also serves as a dispersing agent for insoluble actives and pigments. In pharmaceuticals, it can be used as a non-irritating emulsifier in dermatological creams and ointments. In cosmetics, it is favored for its emollient and skin-conditioning benefits in products such as cleansing oils, makeup removers, and sunscreens.
| Test Item | Unit | Minimum Value | Maximum Value |
|---|---|---|---|
| Saponification Value | mgKOH/g | 143 | 165 |
| Iodine Value | mgKOH/g | 182 | 220 |
| Acid Value | mgKOH/g | — | 14 |
| Moisture | % | — | 1 |
| Fatty Acids | w% | 74 | 80 |
| Polyol | w% | 22 | 28 |
Applications
It performs effectively in water-in-oil emulsions and demonstrates outstanding compatibility with other nonionic surfactants.
Its mildness and versatility make it a preferred ingredient in formulations that require stability, safety, and long-lasting 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:
Sorbitan Sesquioleate 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
