Database/Colorant/CI 77742
Mostly natural · ISO 16128

Is CI 77742 natural?

Mostly. The pigment is genuinely a mineral salt apart from its ammonium ion. Treating it as fully mineral by analogy with iron oxides ignores the ammonium, which this site scores as petrochemical wherever it appears, as it does in ammonium carbonate and ammonium lauryl sulfate.

INCI nameCI 77742
CAS10101-66-3
FormulaH4MnNO7P2 · 246.92 Da
FunctionColorant
FeedstockManufactured by calcining manganese and ammonium phosphate salts…

How we scored it

Manganese violet is NH4MnP2O7, 246.92 Da. The manganese, phosphorus and oxygen come from mineral salts and total 228.88 Da; the ammonium ion NH4 is 18.04 Da and comes from Haber-process ammonia, which is petrochemical on this site. So 228.88/246.92 = 0.93.
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 calcining manganese and ammonium phosphate salts together. The manganese and phosphate come from mineral sources; the ammonium nitrogen is fixed from natural gas by the Haber process.

In plain English

A violet-purple mineral pigment used to colour cosmetics, made by combining manganese and phosphate mineral salts.

CosIng definition: CI 77742 is classed chemically as an inorganic colour (see also INCI name: Manganese Violet). It conforms to the formula:

Natural alternatives with the same function

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Structure

2D structure of CI 77742

azanium;manganese(3+);phosphonato phosphate

PubChem CID 160915 ↗

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 77742. PubChem CID 160915. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
  3. 3CI 77742. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  4. 4CI 77742. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=CI%2077742