Vitamin C Ascorbyl Stearate
Ascorbyl stearate, L-ascorbyl 6-stearate, L-ascorbic acid 6-stearate, E304ii
- CAS
- 10605-09-1
- EC
- 234-231-5
- Sectors
- Food & Nutrition, Personal Care & Cosmetics
Vitamin C Ascorbyl Stearate (CAS 10605-09-1) is a fat-soluble ester of L-ascorbic acid and stearic acid, supplied as a white to pale brown solid and used as the E304ii antioxidant in fats, oils, baked goods and cosmetic creams. It presents as a white to pale brown solid, melting point 117 °C, density 1.125 g/cm³. SoleChem supplies it in food-grade quality meeting E304ii specifications under EU food additive regulations and in pharmaceutical-grade quality conforming to USP and Ph. Eur. standards.
Typical Properties
| Molecular formula | C24H42O7 |
|---|---|
| Molecular weight | 442.59 g/mol |
| Form | Solid |
| Color | White to Pale Brown |
| Melting point | 117 °C |
| Density | 1.125 |
| HS code | 2936270000 |
| Grades available | Food Grade, Pharma 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.
Vitamin C Ascorbyl Stearate
Applications
- Food manufacturing: E304ii antioxidant in fats, oils, and baked goods.
- Pharmaceuticals: Protects oxidation-sensitive ingredients in lipid-based capsules.
- Personal care & cosmetics: Stabilises oil phase in creams and serums.
- Nutraceuticals: Co-antioxidant with tocopherols improving oxidative stability in oils.
- Food supplements: Lipid-based Vitamin C source; excluded from Directive 2002/46/EC Annex II.
Safety & Risks
Not classified as hazardous under GHS. Low acute toxicity; handle with standard industrial hygiene practices. Avoid prolonged dust inhalation. Store away from heat, moisture, and direct light.
Packaging
Supplied in 25 kg fibre drums or multi-layer bags; 1–5 kg small-lot options available. Store in cool, dry, temperature-controlled conditions.