Database/Hair Dyeing/Disperse Orange 3
100% petroleum · ISO 16128

Is Disperse Orange 3 natural?

No. Azo dyes are synthesised from petrochemical aniline and nitrobenzene derivatives via diazotisation; no natural fragment exists.

INCI nameDisperse Orange 3
CAS730-40-5
FormulaC12H10N4O2 · 242.23 Da
FunctionHair Dyeing
FeedstockManufactured by diazotising 4-nitroaniline and coupling with aniline,…

How we scored it

Nitro-azo-aniline dye C12H10N4O2; entirely synthetic, no mineral fragment; 0/242=0.00.
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

Manufactured by diazotising 4-nitroaniline and coupling with aniline, both petrochemical aromatic amines. No natural route exists.

In plain English

A synthetic orange dye used in hair colourants, made entirely from petroleum-derived aromatic chemicals.

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Structure

2D structure of Disperse Orange 3

4-[(4-nitrophenyl)diazenyl]aniline

PubChem CID 12896 ↗

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. 2Disperse Orange 3. PubChem CID 12896. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
  3. 3DISPERSE ORANGE 3. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  4. 4DISPERSE ORANGE 3. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=DISPERSE%20ORANGE%203