Database/Colorant/CI 12420
100% petroleum · ISO 16128

Is CI 12420 natural?

No. Chlorinated aromatic azo pigment made from petrochemical chloro-toluidine and naphthol-carboxamide precursors.

INCI nameCI 12420
CAS6471-51-8
FormulaC25H19Cl2N3O2 · 464.3 Da
FunctionColorant
FeedstockCI 12420 is a synthetic monoazo pigment (a…

How we scored it

Synthetic monoazo pigment: two chloro-methylphenyl aromatic rings joined by diazo and carboxamide linkages to naphthol; entirely petrochemical (benzene/naphthalene-derived), no natural fragment.
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

CI 12420 is a synthetic monoazo pigment (a chlorotoluidine azo naphthol carboxamide) manufactured entirely from petrochemical aromatic intermediates. This colorant class has no natural-origin production route.

In plain English

A synthetic red pigment used to colour cosmetics such as lipstick. It is manufactured from petroleum-derived aromatic chemicals with no natural source.

CosIng definition: CI 12420 is classed chemically as a monoazo colour. It conforms to the formula:

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Structure

2D structure of CI 12420

N-(4-chloro-2-methylphenyl)-4-[(4-chloro-2-methylphenyl)diazenyl]-3-hydroxynaphthalene-2-carboxamide

PubChem CID 80959 ↗

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 12420. PubChem CID 80959. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
  3. 3CI 12420. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  4. 4CI 12420. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=CI%2012420