Database/Hair Dyeing/HC Blue No. 9
100% petroleum · ISO 16128

Is HC Blue No. 9 natural?

No. Fully organic synthetic nitroaniline dye with ethylene- and propylene-oxide-derived side chains; entirely petrochemical.

INCI nameHC Blue No. 9
CAS114087-41-1
FormulaC13H21N3O5 · 299.32 Da
FunctionHair Dyeing
FeedstockManufactured from petrochemical nitroaniline intermediates alkylated with ethylene…

How we scored it

Nitroanilino-propanediol dye; aromatic core from petrochemical aniline, hydroxyethyl and propanediol groups from ethylene/propylene oxide. No mineral counter-ion present.
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 nitroaniline intermediates alkylated with ethylene oxide and propylene oxide. No natural-origin route exists.

In plain English

A synthetic dye made from petroleum-derived chemicals, used to add blue color in semi-permanent hair dyes.

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Structure

2D structure of HC Blue No. 9

3-[4-[ethyl(2-hydroxyethyl)amino]-2-nitroanilino]propane-1,2-diol

PubChem CID 15801041 ↗

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. 9. PubChem CID 15801041. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
  3. 3HC BLUE NO. 9. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  4. 4HC BLUE NO. 9. 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.%209