Description

n-Ethyl-n-(2-Hydroxyethyl)-1,4-Phenylenediamine Sulfate is a specialized organic salt primarily used as a key intermediate and color developer. This compound matters for its critical role in the synthesis of high-performance dyes and pigments, as well as in advanced oxidation hair color formulations. Industries that need it include manufacturers of photographic chemicals, oxidative hair dyes, and specialty polymers where precise color development and chemical stability are paramount.

Application

• Oxidative Hair Dye Intermediate: A primary coupler/developer in permanent hair color formulations, reacting with hydrogen peroxide to produce a wide spectrum of shades.
• Photographic Developer: Used in color photographic processing as a developing agent for color films and papers.
• Dye and Pigment Synthesis: Serves as a crucial building block for the production of azo dyes and other complex organic colorants.
• Polymer Additive: Can act as a stabilizer or curing agent in specific polymer systems and epoxy resins.
• Analytical Reagent: Employed in certain chemical analyses and diagnostic kits as a chromogenic substrate.
• Textile Processing: Utilized in specialty dyeing processes for synthetic fibers.

Basic Information

Product Name	n-Ethyl-n-(2-Hydroxyethyl)-1,4-Phenylenediamine Sulfate
CAS No.	4327-84-8
Molecular Formula	C10H16N2O • H2SO4 or C10H18N2O5S
Molecular Weight	278.33 g/mol
Synonyms	4-Amino-N-ethyl-N-(2-hydroxyethyl)aniline sulfate; N-Ethyl-N-(2-hydroxyethyl)-p-phenylenediamine sulfate; p-Amino-N-ethyl-N-(β-hydroxyethyl)aniline sulfate; EHPDS; 1,4-Benzenediamine, N-ethyl-N-(2-hydroxyethyl)-, sulfate (1:1); Oxidative hair dye intermediate; Color developer; TDS (in some contexts)
EINECS	224-371-9

Quality Control

Our n-Ethyl-n-(2-Hydroxyethyl)-1,4-Phenylenediamine Sulfate is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets the high standards required for photographic and cosmetic applications. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with every shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated place at a controlled room temperature (15-25°C). This material is easily oxidized (store under inert atmosphere) and is light-sensitive (store away from light). Keep away from strong oxidizing agents, strong acids, and incompatible materials.

Specification

Item	Specification
Appearance	White to light gray or light brown crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 1.0%
Residue on Ignition (Sulfated Ash)	≤ 0.2%
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Individual impurity ≤ 0.5%; Total impurities ≤ 2.0%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.