Database/Antioxidant/Potassium Sulfite
100% natural origin · ISO 16128

Is Potassium Sulfite natural?

Yes. Simple inorganic potassium salt of sulfurous acid; minerals and their simple salts are natural origin under ISO 16128.

INCI namePotassium Sulfite
CAS10117-38-1
FormulaK2O3S · 158.26 Da
FunctionAntioxidant · Hair Waving Or Straightening
FeedstockManufactured by reacting potassium hydroxide or carbonate with…

How we scored it

Whole-molecule inorganic salt (dipotassium sulfite, K2O3S); simple mineral salt, no organic fragment → 1.00
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

Manufactured by reacting potassium hydroxide or carbonate with sulfur dioxide. A simple inorganic mineral salt used as an antioxidant and reducing agent.

In plain English

A mineral salt used as an antioxidant and reducing agent, for example in hair-waving products. Manufactured from potassium and sulfur dioxide.

CosIng definition: Potassium Sulfite is the inorganic salt that conforms to the formula:

Structure

2D structure of Potassium Sulfite

dipotassium;sulfite

PubChem CID 24958 ↗

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. 2Potassium Sulfite. PubChem CID 24958. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
  3. 3POTASSIUM SULFITE. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  4. 4POTASSIUM SULFITE. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=POTASSIUM%20SULFITE