Database/Hair Dyeing/N-Phenyl-p-Phenylenediamine HCl
Mostly petroleum · ISO 16128

Is N-Phenyl-p-Phenylenediamine HCl natural?

Mostly not. Synthetic hair-dye aromatic diamine supplied as its salt. Only the mineral counter-ion counts as natural, as on the site's other hair-dye salts; every carbon is petrochemical.

INCI nameN-Phenyl-p-Phenylenediamine HCl
CAS2198-59-6
FormulaC12H13ClN2 · 220.70 Da
FunctionHair Dyeing
FeedstockPetrochemical aromatic amine or dye base isolated as…

How we scored it

N-Phenyl-p-phenylenediamine hydrochloride C12H13ClN2 220.7 Da: 1×HCl 36.5 Da is mineral-derived (natural); the aromatic diamine 184.2 Da is petrochemical → 36.5/220.7 = 0.17.
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

Petrochemical aromatic amine or dye base isolated as its mineral-acid salt.

In plain English

A synthetic hair-dye intermediate made from petrochemical aromatic amines. It reacts with other dye components to help develop permanent hair colour.

Natural alternatives with the same function

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 Lawsonia Inermis Extract 100% natural origin

A plant extract from the henna shrub, used to condition hair and skin and add a reddish tint.…

 Pyrogallol 100% natural origin

A hair-dye ingredient traditionally made by heating gallic acid, itself extracted from plant tannins in gallnuts, until it…

Structure

2D structure of N-Phenyl-p-Phenylenediamine HCl

4-N-phenylbenzene-1,4-diamine;hydrochloride

PubChem CID 75146 ↗

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. 2N-Phenyl-p-Phenylenediamine HCl. PubChem CID 75146. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
  3. 3N-PHENYL-P-PHENYLENEDIAMINE HCL. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  4. 4N-PHENYL-P-PHENYLENEDIAMINE HCL. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=N-PHENYL-P-PHENYLENEDIAMINE%20HCL