Database/Antioxidant/Ascorbyl Stearate
100% natural origin · ISO 16128

Is Ascorbyl Stearate natural?

Yes. Vitamin C from glucose fermentation esterified with stearic acid from vegetable/animal fats; both fragments natural.

INCI nameAscorbyl Stearate
CAS25395-66-8
FormulaC24H42O7 · 442.6 Da
FunctionAntioxidant
FeedstockAscorbyl Stearate is made by esterifying ascorbic acid,…

How we scored it

Ascorbic acid C6H8O6 (176.1 Da, glucose fermentation) + stearic acid C18H36O2 (284.5 Da, oleochemical) − H2O = 442.6 Da; both natural → 1.0
What counts. ISO 16128-2 scores the atoms that remain in the final ingredient. Reagents, solvents, catalysts and protecting groups used during manufacture leave no mass behind and are not counted.

Where it comes from

Ascorbyl Stearate is made by esterifying ascorbic acid, produced from fermented glucose, with stearic acid derived from oleochemical fats and oils. No petrochemical route is used commercially.

In plain English

An antioxidant made by combining vitamin C with stearic acid from vegetable fats, used to stabilize formulas against oxidation.

Structure

2D structure of Ascorbyl Stearate

[(2S)-2-[(2R)-3,4-dihydroxy-5-oxo-2H-furan-2-yl]-2-hydroxyethyl] octadecanoate

PubChem CID 54725318 ↗

References

  1. 1ISO 16128-1:2016 and ISO 16128-2:2017 — Guidelines on technical definitions and criteria for natural and organic cosmetic ingredients and products. ISO, Geneva.
  2. 2Ascorbyl Stearate. PubChem CID 54725318. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
  3. 3ASCORBYL STEARATE. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  4. 4ASCORBYL STEARATE. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=ASCORBYL%20STEARATE