Database/Hair Dyeing/Pigment Red 63:1
Mostly petroleum · ISO 16128

Is Pigment Red 63:1 natural?

Mostly not. Two names for one colorant carry one value; the calculation is on the CI 15880 page.

INCI namePigment Red 63:1
CAS6417-83-0
FormulaC21H12CaN2O6S · 460.5 Da
FunctionHair Dyeing
FeedstockAn azo pigment made from petrochemical naphthalene intermediates…

How we scored it

This name and CI 15880 are two listings of the same colorant, so it carries that entry's value: 0.09.
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

An azo pigment made from petrochemical naphthalene intermediates and laked with calcium.

In plain English

A deep red pigment used to colour make-up and other products, and listed for hair dyeing. It is a synthetic azo dye made from petrochemical naphthalene-based chemicals and precipitated as a calcium salt so it stays insoluble.

CosIng definition: Pigment Red 63:1 is classed chemically as a monoazo colour. It conforms to the formula:

Natural alternatives with the same function

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 Epicatechin 100% natural origin

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 Lawsonia Inermis Extract 100% natural origin

A plant extract from the henna shrub, used to condition hair and skin and add a reddish tint.…

 Pyrogallol 100% natural origin

A hair-dye ingredient traditionally made by heating gallic acid, itself extracted from plant tannins in gallnuts, until it…

Structure

2D structure of Pigment Red 63:1

calcium 2-[(3-carboxy-2-oxidonaphthalen-1-yl)diazenyl]naphthalene-1-sulfonate

PubChem CID 135487685 ↗

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 63:1. PubChem CID 135487685. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
  3. 3PIGMENT RED 63:1. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  4. 4PIGMENT RED 63:1. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=PIGMENT%20RED%2063%3A1