Database/Colorant/CI 15630
100% petroleum · ISO 16128

Is CI 15630 natural?

No. Synthetic monoazo colorant built from petrochemical naphthalene-sulfonic-acid intermediates; no natural fragments.

INCI nameCI 15630
CAS1248-18-6
FormulaC20H13N2NaO4S · 400.4 Da
FunctionColorant
FeedstockSynthesised by diazotising a naphthylamine sulfonic acid and…

How we scored it

Monoazo dye from a diazotised naphthol-sulfonate coupled to naphthol; both rings are petrochemical (naphthalene) aromatics. Entirely synthetic.
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 by diazotising a naphthylamine sulfonic acid and coupling it to naphthol, both derived from petroleum-based naphthalene. No natural production route exists for this synthetic dye.

In plain English

A red synthetic dye used to colour cosmetic and personal care products. Manufactured from petrochemical aromatic building blocks.

CosIng definition: CI 15630 is classed chemically as a monoazo colour. It conforms to the formula:

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Structure

2D structure of CI 15630

sodium 2-[(2-hydroxynaphthalen-1-yl)diazenyl]naphthalene-1-sulfonate

PubChem CID 135487615 ↗

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 15630. PubChem CID 135487615. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
  3. 3CI 15630. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  4. 4CI 15630. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=CI%2015630