Database/Colorant/CI 42520
Mostly petroleum · ISO 16128

Is CI 42520 natural?

Mostly not. The triphenylmethane dye core is built from synthetic aniline/benzene intermediates; only the chloride counter-ion is mineral-origin.

INCI nameCI 42520
CAS3248-91-7
FormulaC22H24ClN3 · 365.9 Da
FunctionColorant · Hair Dyeing
FeedstockManufactured by synthetic organic chemistry from petrochemical aromatic…

How we scored it

C22H24ClN3: diaminotriphenylmethane cation C22H24N3 330.5 Da (petrochemical, benzene-derived) + Cl 35.4 Da (mineral) = 35.4/365.9 = 0.10
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 synthetic organic chemistry from petrochemical aromatic amines and isolated as the hydrochloride salt. No natural production route exists.

In plain English

A synthetic triphenylmethane dye used to colour hair dye products. It is made from petrochemical aromatic building blocks and is not extracted from any natural source.

CosIng definition: CI 42520 is classed chemically as a triphenylmethane colour. It conforms to the formula:

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Structure

2D structure of CI 42520

4-[(4-amino-3-methylphenyl)-(4-imino-3-methylcyclohexa-2,5-dien-1-ylidene)methyl]-2-methylaniline;hydrochloride

PubChem CID 14454445 ↗

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 42520. PubChem CID 14454445. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
  3. 3CI 42520. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  4. 4CI 42520. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=CI%2042520