Sorbitan Monostearate
Span 60, Sorbitan Stearate, E491, SMS.
- CAS
- 1338-41-6
- EC
- 215-664-9
- Sectors
- Food & Nutrition, Personal Care & Cosmetics, Plastics & Polymers
Sorbitan Monostearate (CAS 1338-41-6) is a lipophilic sorbitan ester emulsifier, supplied as cream-colored flakes, formed by the esterification of sorbitol with stearic acid; it serves as a Food Grade additive in dry yeast production, a water-in-oil emulsion stabilizer in cosmetics, and an internal lubricant for polymer films. The product acts as a Technical Grade stabilizer that excels in forming stable water-in-oil emulsions for cosmetics. It is characterized by its waxy solid form and ability to improve the consistency of fat-based industrial products. In the plastics industry, it serves as a superior internal lubricant and anti-fogging agent for polymer films. Its biocompatible nature ensures safety in both pharmaceutical topical applications and large-scale food manufacturing.
Typical Properties
| Molecular formula | C24H46O6 |
|---|---|
| Molecular weight | 430.62 g/mol |
| Appearance | Liquid |
| Form | Solid |
| Color | Cream coloured flakes |
| Odor | Slight |
| Melting point | 49-65 °C |
| Density | 1.0 g/cm³ @ Temp: 25 °C |
| Flash point | >230 °F |
| HS code | 34021300 |
| Grades available | Food Grade, Technical Grade |
Typical literature values for identification; lot-specific results are stated on the certificate of analysis (COA) and the safety data sheet (SDS) that accompany every delivery.
Sorbitan Monostearate
Applications
- Yeast Production: Essential for protecting dry yeast cells during rehydration and improving gas retention in dough.
- Personal Care: Functions as a primary texturizer in cold creams, hair waxes, and protective skin barriers.
- Polymer Processing: Used as a lubricant and dispersing agent in the manufacture of plastic packaging and textiles.
Safety & Risks
Recognized as GRAS (Generally Recognized As Safe) for food contact. Wear Standard PPE, including safety glasses and gloves, to prevent contact with molten material during heating.
Packaging
25 kg Paper Bags with PE liners or 500 kg Super Sacks.