Database/Hair Dyeing/Basic Orange 2
Mostly petroleum · ISO 16128

Is Basic Orange 2 natural?

Mostly not. Synthetic hair-dye azo diamine dye 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 nameBasic Orange 2
CAS532-82-1
FormulaC12H13ClN4 · 248.71 Da
FunctionHair Dyeing
FeedstockPetrochemical aromatic amine or dye base isolated as…

How we scored it

Basic Orange 2 (chrysoidine hydrochloride) C12H13ClN4 248.7 Da: 1×HCl 36.5 Da is mineral-derived (natural); the azo diamine dye 212.3 Da is petrochemical → 36.5/248.7 = 0.15.
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

An orange dye used to colour hair. It is a fully synthetic molecule made from petroleum-derived chemicals, with no natural source.

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 Lawsonia Inermis Extract 100% natural origin

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 Pyrogallol 100% natural origin

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Structure

2D structure of Basic Orange 2

4-phenyldiazenylbenzene-1,3-diamine;hydrochloride

PubChem CID 10771 ↗

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. 2Basic Orange 2. PubChem CID 10771. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
  3. 3BASIC ORANGE 2. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  4. 4BASIC ORANGE 2. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=BASIC%20ORANGE%202