Database/Colorant/CI 42045
Mostly petroleum · ISO 16128

Is CI 42045 natural?

Mostly not. The triphenylmethane dye core and its diethylamino groups are synthetic/petrochemical; only the sodium and sulfonate groups are mineral-origin.

INCI nameCI 42045
CAS129-17-9
FormulaC27H31N2NaO6S2 · 566.7 Da
FunctionColorant
FeedstockMade by synthetic organic chemistry from petrochemical aromatic…

How we scored it

C27H31N2NaO6S2: Na 23.0 + 2xSO3 160.1 = 183.1 Da mineral; remaining diethylaminotriphenylmethane-disulfonate core 383.6 Da petrochemical; 183.1/566.7 = 0.32
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

Made by synthetic organic chemistry from petrochemical aromatic amines and isolated as the sodium sulfonate salt. No natural route exists.

In plain English

A synthetic triphenylmethane dye (a blue-green colourant) made from petrochemical aromatic building blocks. Used to add colour to cosmetic and personal care products.

CosIng definition: CI 42045 is classed chemically as a triphenylmethane colour. It conforms to the formula:

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Structure

2D structure of CI 42045

sodium 2-[[4-(diethylamino)phenyl]-(4-diethylazaniumylidenecyclohexa-2,5-dien-1-ylidene)methyl]benzene-1,4-disulfonate

PubChem CID 50108 ↗

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 42045. PubChem CID 50108. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
  3. 3CI 42045. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  4. 4CI 42045. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=CI%2042045