Hydroxyethyl-p-phenylenediamine sulfate

Hydroxyethyl-p-phenylenediamine sulfate (CAS 93841-25-9) is a sulfate salt of an aromatic diamine, registered under EC number 298-995-1 with the molecular formula C8H12N2O.H2O4S. It carries no assigned E-code or established trade abbreviations. It belongs to the amine chemical class and is handled primarily in professional and industrial settings.

In oxidative hair colouring formulations, it functions as a primary intermediate that couples with oxidants and coupler molecules to develop permanent colour within the hair cortex. In textile and leather processing, its amine groups interact with fibre surfaces and dye molecules to improve dye uptake and surface adhesion, modifying the wetting and bonding characteristics of treated substrates.

This material is supplied as a solid and is subject to REACH registration requirements for import and use within the European Economic Area. Procurement professionals should confirm supplier safety data sheets and technical specifications for grade purity. Packaging formats and minimum order quantities vary by supplier.