Database/Colorant/CI 19140
100% petroleum · ISO 16128

Is CI 19140 natural?

No. A fully synthetic pyrazole/azo dye built from petrochemical aromatic precursors, with no natural fragments.

INCI nameCI 19140
CAS1934-21-0
FormulaC16H9N4Na3O9S2 · 534.4 Da
FunctionColorant · Hair Dyeing
FeedstockCI 19140 is manufactured by diazotizing a petrochemical…

How we scored it

Tartrazine-type pyrazolone azo dye synthesized from petrochemical aromatic intermediates; no natural-origin atoms in the chromophore → 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

CI 19140 is manufactured by diazotizing a petrochemical aromatic amine and coupling it with a synthetic pyrazolone. No natural-origin route exists for this synthetic dye.

In plain English

CI 19140 (a Tartrazine-type yellow) is a synthetic dye made from petrochemical raw materials. Used to add yellow colour to cosmetics and to dye hair.

CosIng definition: CI 19140 is classed chemically as a pyrazole colour. It conforms to the formula:

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Structure

2D structure of CI 19140

trisodium;5-oxo-1-(4-sulfonatophenyl)-4-[(4-sulfonatophenyl)diazenyl]-4H-pyrazole-3-carboxylate

PubChem CID 164825 ↗

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 19140. PubChem CID 164825. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
  3. 3CI 19140. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  4. 4CI 19140. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=CI%2019140