Database/Colorant/CI 42735
Mostly petroleum · ISO 16128

Is CI 42735 natural?

Mostly not. The triphenylmethane chromophore is benzene/aniline-derived petrochemical material; sulfonate and sodium groups are mineral-origin natural fragments.

INCI nameCI 42735
CAS6505-30-2
FormulaC43H49N3NaO6S2+ · 791.0 Da
FunctionColorant
FeedstockCI 42735 is a synthetic triphenylmethane dye made…

How we scored it

Sulfonate/sodium fragments (S2O6+Na, ~183 Da, natural mineral) subtracted from MW 791 -> 608 Da triphenylmethane backbone (petrochemical) -> 183/791 = 0.23.
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

CI 42735 is a synthetic triphenylmethane dye made from petrochemical aromatic amines, sulfonated for water solubility. No natural extraction route exists for this dye class.

In plain English

A synthetic triphenylmethane dye used to add blue-green colour to cosmetic products.

CosIng definition: CI 42735 is classed chemically as a triphenylmethane colour. It conforms to the formula:

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Structure

2D structure of CI 42735

sodium 3-[[4-[(4-diethylazaniumylidenecyclohexa-2,5-dien-1-ylidene)-[4-[ethyl-[(3-sulfophenyl)methyl]amino]-2-methylphenyl]methyl]-N-ethyl-3-methylanilino]methyl]benzenesulfonate

PubChem CID 23679261 ↗

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 42735. PubChem CID 23679261. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
  3. 3CI 42735. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  4. 4CI 42735. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=CI%2042735