Database/Colorant/CI 62045
Mostly petroleum · ISO 16128

Is CI 62045 natural?

Mostly not. Anthraquinone-cyclohexylamino chromophore is synthetic aromatic chemistry; only the sodium sulfonate fragment counts as mineral-origin.

INCI nameCI 62045
CAS4368-56-3
FormulaC20H19N2NaO5S · 422.4 Da
FunctionColorant
FeedstockSynthetic anthraquinone acid dye made by sulfonating and…

How we scored it

SO3Na sulfonate fragment (natural, 103 Da) + anthraquinone-cyclohexylamino chromophore C20H19N2O2 (petrochemical, 319 Da) = 103/422 = 0.24
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

Synthetic anthraquinone acid dye made by sulfonating and aminating anthraquinone derived from petrochemical/coal-tar aromatics, with a synthetic cyclohexylamine substituent. Only the sodium sulfonate counter-ion fragment is natural-origin under ISO mass-balance.

In plain English

A synthetic violet dye used to colour cosmetic products. It's made industrially from anthraquinone and cyclohexylamine, then turned into a sodium salt so it dissolves in water.

CosIng definition: CI 62045 is classed chemically as an anthraquinone colour. It conforms to the formula:

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Structure

2D structure of CI 62045

sodium 1-amino-4-(cyclohexylamino)-9,10-dioxoanthracene-2-sulfonate

PubChem CID 23678881 ↗

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. 2CI 62045. PubChem CID 23678881. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
  3. 3CI 62045. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  4. 4CI 62045. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=CI%2062045