Database/Colorant/CI 13015
Mostly natural · ISO 16128

Is CI 13015 natural?

Mostly. Sulfonate-sodium groups count as mineral-derived natural origin; the aniline-based diazo aromatic backbone is entirely petrochemical.

INCI nameCI 13015
CAS2706-28-7
FormulaC12H9N3Na2O6S2 · 401.3 Da
FunctionColorant
FeedstockSynthesised from petrochemical aromatic amines via diazotisation and…

How we scored it

2x SO3Na (mineral sulfonate salt) 206.10 Da natural + C12H9N3 aromatic diazo backbone 195.2 Da petrochemical; 206.10/401.3=0.51
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 aromatic amines via diazotisation and sulfonation, then neutralised with sodium. No natural-isolation route exists for this dye.

In plain English

A synthetic dye used to colour cosmetics. Built from petrochemical aromatic chemicals, though its sulfonate salt groups are mineral-derived.

CosIng definition: CI 13015 is classed chemically as a monoazo colour. It conforms to the formula:

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Structure

2D structure of CI 13015

disodium;2-amino-5-[(4-sulfonatophenyl)diazenyl]benzenesulfonate

PubChem CID 75918 ↗

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 13015. PubChem CID 75918. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
  3. 3CI 13015. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  4. 4CI 13015. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=CI%2013015