Database/Hair Dyeing/Acid Blue 9 Ammonium Salt
100% petroleum · ISO 16128

Is Acid Blue 9 Ammonium Salt natural?

No. Two names for one colorant carry one value; the calculation is on the CI 42090 page.

INCI nameAcid Blue 9 Ammonium Salt
CAS2650-18-2
FormulaC37H42N4O9S3 · 783.0 Da
FunctionHair Dyeing
FeedstockA triarylmethane dye made from petrochemical aromatic intermediates,…

How we scored it

This name and CI 42090 are two listings of the same colorant, so it carries that entry's value: 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

A triarylmethane dye made from petrochemical aromatic intermediates, sold as its ammonium salt.

In plain English

A bright blue synthetic dye used in semi-permanent hair colours. It is a triphenylmethane dye built in a factory from petroleum-derived benzene and toluene chemistry, then converted to its ammonium salt.

CosIng definition: Acid Blue 9 Ammonium Salt is classed chemically as a triphenylmethane colour. It conforms to the formula:

Natural alternatives with the same function

Beta Vulgaris Root Powder 100% natural origin

A powder made by drying and grinding sugar beet root. Used as a natural colorant for hair dye…

 Bismuth Citrate 100% natural origin

A salt formed from bismuth metal and citric acid, a natural fermentation-derived fruit acid, used to buffer, chelate…

 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 Acid Blue 9 Ammonium Salt

diazanium;2-[[4-[ethyl-[(3-sulfonatophenyl)methyl]amino]phenyl]-[4-[ethyl-[(3-sulfonatophenyl)methyl]azaniumylidene]cyclohexa-2,5-dien-1-ylidene]methyl]benzenesulfonate

PubChem CID 17559 ↗

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. 2Acid Blue 9 Ammonium Salt. PubChem CID 17559. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
  3. 3ACID BLUE 9 AMMONIUM SALT. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  4. 4ACID BLUE 9 AMMONIUM SALT. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=ACID%20BLUE%209%20AMMONIUM%20SALT