Database/Colorant/CI 45190
Mostly petroleum · ISO 16128

Is CI 45190 natural?

Mostly not. Rhodamine-type xanthene dye built on a petrochemical resorcinol/phthalic-anhydride core; only its sodium sulfonate group counts as a mineral natural fragment.

INCI nameCI 45190
CAS6252-76-2
FormulaC34H26N2NaO6S+ · 613.6 Da
FunctionColorant
FeedstockSynthesised by condensing petrochemical phenolic and aniline intermediates…

How we scored it

MW 613.6: 1x SO3Na (natural, 103 Da) → 103/613.6 = 0.17; xanthene ring (resorcinol/phthalic-anhydride derived), methylanilino and carboxyphenyl groups 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

Synthesised by condensing petrochemical phenolic and aniline intermediates into the xanthene chromophore, then sulfonating and isolating as the sodium salt. No natural-extraction route exists.

In plain English

A synthetic pink/red xanthene dye related to rhodamine dyes, used to colour cosmetic products. Its ring system and amine substituents are coal-tar-derived; only its sodium sulfonate group is mineral-derived.

CosIng definition: CI 45190 is classed chemically as a xanthene colour. It conforms to the formula:

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Structure

2D structure of CI 45190

sodium 4-[[9-(2-carboxyphenyl)-6-(2-methylanilino)xanthen-10-ium-3-yl]amino]-3-methylbenzenesulfonate

PubChem CID 76968456 ↗

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 45190. PubChem CID 76968456. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
  3. 3CI 45190. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  4. 4CI 45190. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=CI%2045190