Database/Hair Dyeing/2,7-Naphthalenediol
100% petroleum · ISO 16128

Is 2,7-Naphthalenediol natural?

No. Naphthalene-based hair-dye intermediate synthesised from petroleum or coal-tar aromatic feedstock; no natural production route exists.

INCI name2,7-Naphthalenediol
CAS582-17-2
FormulaC10H8O2 · 160.17 Da
FunctionHair Dyeing
FeedstockProduced by hydroxylation of naphthalene sourced from petroleum…

How we scored it

Whole molecule C10H8O2 is a naphthalenediol; naphthalene ring from petroleum/coal-tar aromatics, no natural fragment. 0/160=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

Produced by hydroxylation of naphthalene sourced from petroleum refining or coal-tar distillation. Used as an oxidative hair-dye coupler with no plant-based alternative.

In plain English

A synthetic hair-dye ingredient derived from naphthalene, an aromatic compound sourced from petroleum or coal-tar processing, not from plants.

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Structure

2D structure of 2,7-Naphthalenediol

naphthalene-2,7-diol

PubChem CID 11397 ↗

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. 22,7-Naphthalenediol. PubChem CID 11397. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
  3. 32,7-NAPHTHALENEDIOL. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  4. 42,7-NAPHTHALENEDIOL. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=2%2C7-NAPHTHALENEDIOL