Database/Colorant/CI 45396
100% petroleum · ISO 16128

Is CI 45396 natural?

No. Xanthene dye core is built from petrochemical resorcinol-type phenols and phthalic anhydride via industrial condensation and nitration; no fragment traces to a natural feedstock.

INCI nameCI 45396
CAS24545-86-6
FormulaC20H10N2O9 · 422.3 Da
FunctionColorant
FeedstockCI 45396 is a synthetic organic xanthene dye…

How we scored it

Whole molecule is a synthetic xanthene chromophore (fluorescein-type core) with nitro substituents; no natural fragment identifiable; entire mass from petrochemical aromatics → 0/422 = 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 45396 is a synthetic organic xanthene dye manufactured from petrochemical aromatic intermediates (resorcinol-type phenols and phthalic anhydride), then nitrated. There is no commercial natural-source route for this colorant.

In plain English

A synthetic dye used to add colour to cosmetics. It's manufactured in a factory from petrochemical aromatic building blocks (phenol-type chemicals and phthalic anhydride) rather than extracted from any plant or mineral source.

CosIng definition: CI 45396 is classed chemically as a xanthene colour. It conforms to the formula:

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Structure

2D structure of CI 45396

3',6'-dihydroxy-4',5'-dinitrospiro[2-benzofuran-3,9'-xanthene]-1-one

PubChem CID 90537 ↗

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 45396. PubChem CID 90537. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
  3. 3CI 45396. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  4. 4CI 45396. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=CI%2045396