How we scored it
Ascorbic acid (glucose-derived, natural) sulfate monoester + 2 Na (mineral counter-ions). Sulfate/salt fragments 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
Disodium Ascorbyl Sulfate is made by sulfating fermentation-derived ascorbic acid and neutralising with sodium. Both the sulfate group and the sodium ion are mineral-derived, natural-origin fragments.
In plain English
A stable, water-soluble vitamin C derivative used as an antioxidant in skincare. It combines plant-sugar-derived vitamin C with mineral sulfate and sodium.
CosIng definition: L-Ascorbic acid, sulfate monoester, disodium salt
Structure
disodium;[(2R)-2-[(1S)-1,2-dihydroxyethyl]-3-oxido-5-oxo-2H-furan-4-yl] sulfate
References
- 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.
- 2Disodium Ascorbyl Sulfate. PubChem CID 71587176. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
- 3DISODIUM ASCORBYL SULFATE. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
- 4DISODIUM ASCORBYL SULFATE. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=DISODIUM%20ASCORBYL%20SULFATE