Database/Colorant/CI 59040
Mostly natural · ISO 16128

Is CI 59040 natural?

Mostly. Pyrene core is coal-tar/petrochemical, but three sodium sulfonate groups make up over half the molecule's mass and count as mineral natural fragments.

INCI nameCI 59040
CAS6358-69-6
FormulaC16H7Na3O10S3 · 524.4 Da
FunctionColorant
FeedstockManufactured by sulfonating pyrene (a coal-tar/petroleum aromatic) and…

How we scored it

Pyranine, MW 524.4: 3x SO3Na (natural, 3x103=309 Da) → 309/524.4 = 0.59; pyrene aromatic core (coal-tar derived, 215 Da) petrochemical
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

Manufactured by sulfonating pyrene (a coal-tar/petroleum aromatic) and neutralising with sodium hydroxide. No natural-extraction route exists for this synthetic fluorescent dye.

In plain English

A yellow-green fluorescent pyrene dye (pyranine) used as a cosmetic colourant. Its aromatic pyrene core is coal-tar-derived, but it carries three sodium sulfonate groups that count as mineral-derived, raising its natural-origin share.

CosIng definition: CI 59040 is classed chemically as a pyrene colour. It conforms to the formula:

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Structure

2D structure of CI 59040

trisodium;8-hydroxypyrene-1,3,6-trisulfonate

PubChem CID 61388 ↗

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 59040. PubChem CID 61388. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
  3. 3CI 59040. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  4. 4CI 59040. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=CI%2059040