How we scored it
Cu2(OH)2CO3 221.1 Da: copper ions, hydroxide and carbonate are all mineral origin, n = 1; 221.1 / 221.1 = 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 precipitating copper sulfate solution with sodium carbonate, or mined as natural malachite; both give the same mineral compound. No petrochemical fragment is present.
In plain English
A green copper mineral salt, chemically the same as the mineral malachite, used in cosmetics for its antimicrobial action. Commercial material is made by precipitating copper salts with carbonate.
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.
- 2COPPER CARBONATE HYDROXIDE. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
- 3COPPER CARBONATE HYDROXIDE. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=COPPER%20CARBONATE%20HYDROXIDE