How we scored it
Metal powder is chiefly copper, sometimes alloyed with zinc plus small aluminum/tin; all are elemental metals, so 100% mineral mass → 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
Produced by refining mined copper ore (sometimes alloyed with mined zinc, aluminum or tin) into fine metal powder for use as a colorant. No petrochemical feedstock is involved.
In plain English
A finely powdered metal, mostly copper and sometimes alloyed with zinc, aluminium or tin, used as a colorant. It is refined from mined copper ore.
CosIng definition: CI 77400 is classed chemically as an inorganic color. It is a finely powdered metal consisting chiefly of copper or an alloy of copper and zinc with small amounts of aluminum or tin (See also INCI: Copper Powder)
Structure
copper
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.
- 2CI 77400. PubChem CID 23978. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
- 3CI 77400. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
- 4CI 77400. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=CI%2077400