Database/Hair Dyeing/Toluene-2,5-Diamine
100% petroleum · ISO 16128

Is Toluene-2,5-Diamine natural?

No. Synthesised from petrochemical toluene/benzene feedstock as an aromatic amine hair-dye intermediate.

INCI nameToluene-2,5-Diamine
CAS95-70-5
FormulaC7H10N2 · 122.17 Da
FunctionHair Dyeing
FeedstockManufactured from petroleum-derived toluene via nitration and reduction.…

How we scored it

Entire molecule is a substituted toluene (benzene ring); no natural fragment. 0/122=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

Manufactured from petroleum-derived toluene via nitration and reduction. No natural-origin production route exists.

In plain English

A synthetic dye molecule made from petroleum-derived toluene. Used in permanent hair dyes to create colour when mixed with a developer.

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Structure

2D structure of Toluene-2,5-Diamine

2-methylbenzene-1,4-diamine

PubChem CID 7252 ↗

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. 2Toluene-2,5-Diamine. PubChem CID 7252. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
  3. 3TOLUENE-2,5-DIAMINE. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  4. 4TOLUENE-2,5-DIAMINE. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=TOLUENE-2%2C5-DIAMINE