Database/Colorant/CI 12120
100% petroleum · ISO 16128

Is CI 12120 natural?

No. Synthetic monoazo dye coupling a nitro-methylaniline with naphthol; both precursors are coal-tar/petrochemical aromatics.

INCI nameCI 12120
CAS2425-85-6
FormulaC17H13N3O3 · 307.30 Da
FunctionColorant
FeedstockManufactured by diazotising 4-methyl-2-nitroaniline (petrochemical) and coupling with…

How we scored it

1-[(4-methyl-2-nitrophenyl)diazenyl]naphthalen-2-ol built from nitro-toluidine + 2-naphthol, both petrochemical aromatics; no salt or mineral fragment present.
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 4-methyl-2-nitroaniline (petrochemical) and coupling with 2-naphthol (also petrochemical). No natural or bio-based production route exists.

In plain English

A synthetic orange-red azo dye used to colour cosmetics. It is built in a factory from petroleum-derived aniline and naphthol chemicals; there is no natural version of this colorant.

CosIng definition: CI 12120 is classed chemically as a monoazo colour. It conforms to the formula:

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Structure

2D structure of CI 12120

1-[(4-methyl-2-nitrophenyl)diazenyl]naphthalen-2-ol

PubChem CID 17047 ↗

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 12120. PubChem CID 17047. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
  3. 3CI 12120. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  4. 4CI 12120. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=CI%2012120