Is Calcium Sulfide natural? NOI 1.00

Q: Is Calcium Sulfide natural?

Calcium Sulfide has a Natural Origin Index (NOI) of 1.00 (scale 0–1) per ISO 16128. Calcium sulfide is an inorganic mineral compound; mineral-origin material counts as natural origin under ISO 16128. An NOI of 1.00 means 100% of its molecular mass is traceable to a natural, renewable source.

How we scored it

CaS, 72.15 Da, inorganic mineral salt of calcium and sulfur — mineral origin, n=1. 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

Calcium Sulfide is produced from mineral calcium sources (e.g. limestone) and sulfur. It is classed as mineral, non-petroleum origin.

In plain English

An inorganic mineral salt used in depilatory products to break down hair at the skin surface. Derived from mineral calcium and sulfur sources.

Structure

calcium sulfide

PubChem CID 10197613 ↗

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 Sulfide. PubChem CID 10197613. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
3CALCIUM SULFIDE. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
4CALCIUM SULFIDE. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=CALCIUM%20SULFIDE