Database/Colorant/CI 15880
Mostly petroleum · ISO 16128

Is CI 15880 natural?

Mostly not. A synthetic azo colorant; only its calcium counter-ion is mineral/natural, while the aromatic diazo dye backbone is petrochemical.

INCI nameCI 15880
CAS6417-83-0
FormulaC21H12CaN2O6S · 460.5 Da
FunctionColorant
FeedstockSynthesised from petrochemical naphthalene-derivative intermediates via diazotisation and…

How we scored it

Calcium salt of a monoazo naphthalene dye; only the calcium counter-ion (40.08 Da) is natural; 40.08/460.5 = 0.09, the rest is synthetic aromatic azo dye.
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

Synthesised from petrochemical naphthalene-derivative intermediates via diazotisation and coupling, then precipitated as the calcium salt (lake pigment). No natural production route exists.

In plain English

A synthetic red colorant (calcium lake dye) used to tint cosmetic products. Made from petrochemical aromatic chemicals, with only its calcium component of mineral origin.

CosIng definition: CI 15880 is classed chemically as a monoazo color. It conforms to the formula:

Natural alternatives with the same function

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 Aluminum Stearate 100% natural origin

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 Anthocyanins 100% natural origin

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 Calcium Ferrite 100% natural origin

A mineral pigment made of calcium and iron oxide, used as a colourant in cosmetics. It is produced…

 Calcium Stearate 100% natural origin

The calcium salt of stearic acid, a fatty acid usually from vegetable oils. Used as an anti-caking, thickening…

 Caramel 100% natural origin

A colouring and fragrance ingredient made by heating sugar, sucrose or glucose, until it browns. It comes from…

Structure

2D structure of CI 15880

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. 2CI 15880. PubChem CID 135487685. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
  3. 3CI 15880. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  4. 4CI 15880. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=CI%2015880