Database/Colorant/CI 10006
Mostly petroleum · ISO 16128

Is CI 10006 natural?

Mostly not. Iron and sodium are mineral, while the nitroso-naphtholate ligands come from naphthalene (coal tar or petroleum) with nitrite-derived nitroso groups, which count as petrochemical framework.

INCI nameCI 10006
CAS16143-80-9
FormulaC30H18FeN3NaO6 · 595.3 Da
FunctionColorant
FeedstockDominant route: 2-naphthol is nitrosated to 1-nitroso-2-naphthol and…

How we scored it

C30H18FeN3NaO6 595.3: Fe 55.8 + Na 23.0 = 78.8 mineral; three nitroso-naphtholate ligands 516.5 petrochemical; 78.8/595.3 = 0.13.
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: 2-naphthol is nitrosated to 1-nitroso-2-naphthol and complexed with an iron salt, then isolated as the sodium salt. No alternative route is commercially significant.

In plain English

A green pigment (Pigment Green 8): an iron complex of nitroso-naphthol, sold as a sodium salt and used to colour cosmetics. It is made synthetically from naphthalene-based chemicals.

CosIng definition: CI 10006 is classed chemically as a nitroso colour. It conforms generally to the formula:

Natural alternatives with the same function

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Structure

2D structure of CI 10006

sodium;iron(2+);tris(1-nitrosonaphthalen-2-olate)

PubChem CID 85035 ↗

References

  1. 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.
  2. 2CI 10006. PubChem CID 85035. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
  3. 3CI 10006. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  4. 4CI 10006. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=CI%2010006