How we scored it
Where it comes from
Manufactured by addition of a sulfide source (e.g. hydrogen sulfide) to acrylic acid, a petrochemical feedstock. No commercially significant natural production route exists.
In plain English
An ingredient made industrially by joining two acrylic-acid units with a sulfur bridge. It's mainly used as a building block for antioxidant esters in cosmetics and plastics.
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Structure
3-(2-carboxyethylsulfanyl)propanoic acid
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.
- 2Thiodipropionic Acid. PubChem CID 8096. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
- 3THIODIPROPIONIC ACID. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
- 4THIODIPROPIONIC ACID. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=THIODIPROPIONIC%20ACID