Skip to content

Colorant

2,4-DIAMINOPHENOXYETHANOL SULFATE

CAS 70643-20-8 Updated
25

Safety score · 0–100

Caution

Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.

About

An aromatic-diamine hair-dye intermediate. Functional in permanent color but a known allergen; EU restricts use strictly to oxidative hair dye in rinse-off.

Function

HAIR DYEING

Skin benefits

  • Effective oxidative hair-dye intermediate
  • Used in permanent hair color

Known concerns

  • Aromatic amine — strong sensitization risk
  • EU restricted to rinse-off oxidative hair color only
  • Not for skin contact
  • Possible mutagenicity in class
  • Allergic contact dermatitis well documented

References

EU

EU CosIng database

European Commission cosmetic ingredient registry — regulatory status, restrictions, authorised functions.

Related colorants

25
1-Methoxy-3-(β-aminoethyl) amino-4-nitrobenzene, hydrochloride
Colorant
 25
1-Propanol, 3-[[4-[bis(2-hydroxyethyl)amino]-2-nitrophenyl]amino] (see note 17)
Colorant
 25
2,6-DIAMINOPYRIDINE
Colorant
 25
2-METHYLRESORCINOL
Colorant
 25
4-Chloro-2-aminophenol, when used as a substance in hair dye products
Colorant
 25
ACID YELLOW 73
Colorant
 25
Acid Red 73 (CI 27290), when used as a substance in hair dye products
Colorant
 25
BASIC BLUE 124
Colorant

Check your shelf

Find 2,4-DIAMINOPHENOXYETHANOL SULFATE in your products.

Scan any cosmetic product with LuxSense to see if it contains 2,4-DIAMINOPHENOXYETHANOL SULFATE and get a full ingredient breakdown with safety scores.

This profile is for educational purposes and does not constitute medical advice. Regulatory status and scientific understanding evolve — always read the physical product label and consult a healthcare professional for personal concerns.