Database/Hair Dyeing/HC Blue No. 11
100% petroleum · ISO 16128

Is HC Blue No. 11 natural?

No. Synthetic nitro-aniline hair dye built entirely from petrochemical benzene, nitric acid and ethylene oxide derivatives.

INCI nameHC Blue No. 11
CAS23920-15-2
FormulaC13H22ClN3O5 · 335.78 Da
FunctionHair Dyeing
FeedstockManufactured from petrochemical aniline via nitration and alkylation…

How we scored it

Entire nitroaniline-ethanolamine dye molecule built from petrochemical aniline, nitration and ethylene oxide; no natural fragment. 0/335.78=0.00.
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 from petrochemical aniline via nitration and alkylation with ethylene oxide/methoxyethylamine to build the diamine dye core. No natural or fermentation route is used commercially.

In plain English

A synthetic dye used in semi-permanent hair colors to add blue-violet shades. It is made entirely from petrochemical aniline and nitro compounds.

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Structure

2D structure of HC Blue No. 11

2-[N-(2-hydroxyethyl)-4-(2-methoxyethylamino)-3-nitroanilino]ethanol;hydrochloride

PubChem CID 71587861 ↗

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. 2HC Blue No. 11. PubChem CID 71587861. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
  3. 3HC BLUE NO. 11. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  4. 4HC BLUE NO. 11. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=HC%20BLUE%20NO.%2011