Database/Hair Dyeing/2-Nitro-p-Phenylenediamine Sulfate
Mostly petroleum · ISO 16128

Is 2-Nitro-p-Phenylenediamine Sulfate natural?

Mostly not. Aromatic nitro-diamine base is petrochemical (benzene-derived); sulfate counter-ion is mineral, natural origin.

INCI name2-Nitro-p-Phenylenediamine Sulfate
CAS68239-83-8
FormulaC6H9N3O6S · 251.22 Da
FunctionHair Dyeing
FeedstockSynthesised industrially from benzene-derived nitroaniline intermediates, then combined…

How we scored it

Diamine C6H7N3O2 153.14 Da (petrochemical nitroaniline, n=0) + H2SO4 98.08 Da (mineral sulfate, n=1); 98.08/251.22 = 0.39
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

Synthesised industrially from benzene-derived nitroaniline intermediates, then combined with sulfuric acid to form the sulfate salt. No natural-extraction route exists for this hair-dye precursor.

In plain English

A synthetic hair-colouring ingredient that reacts with other dye components to develop permanent colour on hair. It is manufactured from petroleum-derived chemicals and does not occur in nature.

Natural alternatives with the same function

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 Dihydroxyacetone 100% natural origin

The active self-tanning ingredient that reacts with skin's surface proteins to produce a temporary bronze colour; made by…

 Epicatechin 100% natural origin

An antioxidant compound naturally found in tea and cocoa, used in skin, hair and oral care. It's extracted…

 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 2-Nitro-p-Phenylenediamine Sulfate

2-nitrobenzene-1,4-diamine;sulfuric acid

PubChem CID 5361845 ↗

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. 22-Nitro-p-Phenylenediamine Sulfate. PubChem CID 5361845. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
  3. 32-NITRO-P-PHENYLENEDIAMINE SULFATE. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  4. 42-NITRO-P-PHENYLENEDIAMINE SULFATE. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=2-NITRO-P-PHENYLENEDIAMINE%20SULFATE