Is Zinc Chloride Hydroxide natural? NOI 1.00

Q: Is Zinc Chloride Hydroxide natural?

Zinc Chloride Hydroxide has a Natural Origin Index (NOI) of 1.00 (scale 0–1) per ISO 16128. Zinc comes from zinc ore or zinc oxide, chloride from salt or hydrochloric acid, and hydroxide from water, all mineral inorganic ions counted as natural origin. An NOI of 1.00 means 100% of its molecular mass is traceable to a natural, renewable source.

How we scored it

Zn(OH)Cl: zinc 65.4 + chloride 35.5 + hydroxide 17.0 = 117.8, all mineral ions (; ionic chloride); 117.8/117.8 = 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

Dominant route: reaction of zinc oxide or zinc metal with hydrochloric acid or zinc chloride solution at controlled pH to precipitate basic zinc chloride. The same compound also occurs in nature as the mineral simonkolleite.

In plain English

A mineral zinc compound made of zinc, chloride and hydroxide ions, used as a white powder to add bulk to products. It is basic zinc chloride (zinc hydroxychloride) produced from zinc minerals and chloride.

Structure

zinc;chloride;hydroxide

PubChem CID 11513739 ↗

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.
2Zinc Chloride Hydroxide. PubChem CID 11513739. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
3ZINC CHLORIDE HYDROXIDE. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
4ZINC CHLORIDE HYDROXIDE. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=ZINC%20CHLORIDE%20HYDROXIDE