Database/Hair Dyeing/Solvent Blue 35
100% petroleum · ISO 16128

Is Solvent Blue 35 natural?

No. 1,4-bis(butylamino)anthraquinone is built entirely from petrochemical anthraquinone and butylamine feedstocks.

INCI nameSolvent Blue 35
CAS12769-17-4
FormulaC22H26N2O2 · 350.5 Da
FunctionHair Dyeing
FeedstockSynthesised from petrochemical anthraquinone reacted with butylamine to…

How we scored it

Anthraquinone dye; all carbon/nitrogen from petrochemical synthesis; no natural fragment; 0/350.5=0.0.
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

Synthesised from petrochemical anthraquinone reacted with butylamine to give the blue chromophore. No natural or bio-based route exists commercially.

In plain English

A synthetic blue dye used to colour hair. It is made entirely from petroleum-derived chemicals, with no plant or mineral origin.

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Structure

2D structure of Solvent Blue 35

1,4-bis(butylamino)anthracene-9,10-dione

PubChem CID 3766139 ↗

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. 2Solvent Blue 35. PubChem CID 3766139. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
  3. 3SOLVENT BLUE 35. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  4. 4SOLVENT BLUE 35. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=SOLVENT%20BLUE%2035