Database/Colorant/CI 12370
100% petroleum · ISO 16128

Is CI 12370 natural?

No. Built entirely from petrochemical aromatics (naphthalene, chlorobenzene, toluidine) joined by a synthetic diazo-amide bond; no natural fragment exists.

INCI nameCI 12370
CAS6535-46-2
FormulaC24H16Cl3N3O2 · 484.8 Da
FunctionColorant
FeedstockManufactured by diazotising a chlorinated aniline and coupling…

How we scored it

Fully synthetic naphthol-AS azo pigment: naphthalene+trichlorophenyl+toluidine amide, no mineral or natural fragment present. 0/484.8 = 0.0.
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

Manufactured by diazotising a chlorinated aniline and coupling it to a naphthol-amide, both derived from petroleum or coal-tar aromatics. There is no natural-origin production route for this pigment.

In plain English

A synthetic red-orange pigment used to colour cosmetics. It is manufactured entirely from petrochemical aromatic chemicals through a dye-making reaction called diazotisation; none of its mass comes from natural sources.

CosIng definition: CI 12370 is classed chemically as a monoazo colour. It conforms to the formula:

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Structure

2D structure of CI 12370

3-hydroxy-N-(2-methylphenyl)-4-[(2,4,5-trichlorophenyl)diazenyl]naphthalene-2-carboxamide

PubChem CID 23034 ↗

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 12370. PubChem CID 23034. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
  3. 3CI 12370. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  4. 4CI 12370. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=CI%2012370