Database/Colorant/Basic Violet 10
Mostly petroleum · ISO 16128

Is Basic Violet 10 natural?

Mostly not. A fully synthetic xanthene dye; only its chloride counter-ion counts as natural, as for the site's other basic dyes.

INCI nameBasic Violet 10
CAS81-88-9
FormulaC28H31ClN2O3 · 479.0 Da
FunctionColorant
FeedstockCondensation of 3-diethylaminophenol with phthalic anhydride, isolated as…

How we scored it

Basic Violet 10 (rhodamine B) C28H31ClN2O3 479.0 Da: chloride counter-ion Cl 35.5 Da is mineral-derived (natural); the xanthene dye cation 443.6 Da is petrochemical → 0.07. Same method as Basic Violet 2 and Basic Violet 14.
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

Condensation of 3-diethylaminophenol with phthalic anhydride, isolated as the chloride salt.

In plain English

A bright pink-red synthetic dye used to colour cosmetic products. It is made entirely from petroleum-derived chemicals in a factory, not from plants or minerals.

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Structure

2D structure of Basic Violet 10

[9-(2-carboxyphenyl)-6-(diethylamino)xanthen-3-ylidene]-diethylazanium chloride

PubChem CID 6694 ↗

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. 2Basic Violet 10. PubChem CID 6694. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
  3. 3BASIC VIOLET 10. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  4. 4BASIC VIOLET 10. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=BASIC%20VIOLET%2010