How we scored it
Diglycerol C6H14O5 (166.2 Da, natural, from glycerin) esterified with stearic acid C18H36O2 (284.5 Da, natural fatty acid); only condensation water is lost → 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
Made by esterifying vegetable-glycerin-derived diglycerol with vegetable stearic acid (e.g. from palm or coconut oil). No petrochemical route is used commercially for this emulsifier.
In plain English
An emulsifier made by combining plant-derived glycerin (as diglycerin) with stearic acid, a fatty acid from vegetable fats. Helps blend oil and water in creams and lotions.
CosIng definition: Stearic acid, monoester with oxybis(propanediol)
Structure
2,3-dihydroxypropyl 2-(2,3-dihydroxypropyl)octadecanoate
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.
- 2Polyglyceryl-2 Stearate. PubChem CID 44152234. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
- 3POLYGLYCERYL-2 STEARATE. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
- 4POLYGLYCERYL-2 STEARATE. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=POLYGLYCERYL-2%20STEARATE