Database/Hair Dyeing/Pigment Red 190
100% petroleum · ISO 16128

Is Pigment Red 190 natural?

No. The perylene core (naphthalene or acenaphthene), imide nitrogens and p-anisidine groups are all petrochemical or coal-tar aromatics; nothing natural is incorporated.

INCI namePigment Red 190
CAS6424-77-7
FormulaC38H22N2O6 · 602.6 Da
FunctionHair Dyeing
FeedstockDominant route: perylene-3,4,9,10-tetracarboxylic dianhydride (naphthalene-derived) is condensed with…

How we scored it

C38H22N2O6 perylene diimide with two 4-methoxyphenyl groups; all C, N, O petrochemical aromatics; no salt or mineral atoms; 0/603 = 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

Dominant route: perylene-3,4,9,10-tetracarboxylic dianhydride (naphthalene-derived) is condensed with 4-methoxyaniline (p-anisidine). No natural-origin route exists.

In plain English

A deep red synthetic pigment of the perylene family, listed here for hair dyeing. It is made in a chemical plant from petroleum- and coal-tar-derived aromatic chemicals.

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Structure

2D structure of Pigment Red 190

7,18-bis(4-methoxyphenyl)-7,18-diazaheptacyclo[14.6.2.22,5.03,12.04,9.013,23.020,24]hexacosa-1(23),2,4,9,11,13,15,20(24),21,25-decaene-6,8,17,19-tetrone

PubChem CID 80898 ↗

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. 2Pigment Red 190. PubChem CID 80898. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
  3. 3PIGMENT RED 190. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  4. 4PIGMENT RED 190. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=PIGMENT%20RED%20190