How we scored it
2x gluconate C6H11O7 (fermentation sugar acid, natural) + Ca (mineral, natural) = C12H22CaO14; all fragments natural. 1.0.
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 fermenting glucose (typically from corn starch) to gluconic acid, then neutralising with a calcium source. Both the organic acid and mineral counter-ion are natural origin.
In plain English
The calcium salt of gluconic acid, a mild acid made by fermenting sugar. Used to supply calcium and condition skin in formulas.
CosIng definition: Calcium Gluconate is the calcium salt of gluconic acid that conforms to the formula:
Structure
calcium bis((2R,3S,4R,5R)-2,3,4,5,6-pentahydroxyhexanoate)
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.
- 2Calcium Gluconate. PubChem CID 9290. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
- 3CALCIUM GLUCONATE. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
- 4CALCIUM GLUCONATE. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=CALCIUM%20GLUCONATE