Database/Reducing/Sodium Thiosulfate
100% natural origin · ISO 16128

Is Sodium Thiosulfate natural?

Yes. Inorganic sodium sulfur-oxyanion salt; treated as mineral origin like other sodium sulfur salts.

INCI nameSodium Thiosulfate
CAS7772-98-7
FormulaNa2O3S2 · 158.11 Da
FunctionReducing
FeedstockSodium thiosulfate is manufactured from sulfur or sulfite…

How we scored it

Na2S2O3 inorganic mineral salt; sodium and thiosulfate are both mineral/inorganic-origin fragments, analogous to sulfate.
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

Sodium thiosulfate is manufactured from sulfur or sulfite mineral feedstocks reacted with sodium compounds, both mineral-origin processes.

In plain English

A mineral salt used as a reducing agent in cosmetic formulas. It is made from sulfur-based mineral feedstocks combined with sodium.

Structure

2D structure of Sodium Thiosulfate

disodium;dioxido-oxo-sulfanylidene-lambda6-sulfane

PubChem CID 24477 ↗

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. 2Sodium Thiosulfate. PubChem CID 24477. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
  3. 3SODIUM THIOSULFATE. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  4. 4SODIUM THIOSULFATE. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=SODIUM%20THIOSULFATE