Database/Hair Dyeing/Basic Brown 17
100% petroleum · ISO 16128

Is Basic Brown 17 natural?

No. Entire structure is a synthesised aromatic azo dye built from petrochemical benzene and naphthalene derivatives; no natural fragment.

INCI nameBasic Brown 17
CAS68391-32-2
FormulaC19H20ClN5O3 · 401.8 Da
FunctionHair Dyeing
FeedstockManufactured by diazotising a nitroaniline and coupling it…

How we scored it

Synthetic azo/naphthalene cationic dye; naphthol, nitroaniline and trimethylammonium groups all trace to petrochemical aromatics. 0% natural.
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 a nitroaniline and coupling it to a hydroxynaphthalene-trimethylammonium intermediate, both petrochemical aromatics. No part of the molecule derives from a natural feedstock.

In plain English

A synthetic dye molecule used to colour hair. It is built entirely from man-made aromatic chemical building blocks and contains no natural feedstock.

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Structure

2D structure of Basic Brown 17

[8-[(4-amino-3-nitrophenyl)diazenyl]-7-hydroxynaphthalen-2-yl]-trimethylazanium chloride

PubChem CID 135515517 ↗

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 Brown 17. PubChem CID 135515517. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
  3. 3BASIC BROWN 17. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  4. 4BASIC BROWN 17. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=BASIC%20BROWN%2017