Description

p-Phenylenediamine Hydrochloride is the hydrochloride salt form of a primary aromatic diamine, offering enhanced stability and handling properties for industrial synthesis. This compound serves as a critical high-purity intermediate in the production of advanced polymers, dyes, and specialty chemicals. It is essential for manufacturers in the pharmaceutical, agrochemical, and polymer industries requiring reliable and consistent raw material quality for complex synthetic pathways.

Application

• Pharmaceutical Intermediate: Key building block in the synthesis of active pharmaceutical ingredients (APIs) and diagnostic agents.
• Polymer & Resin Production: Used as a monomer or curing agent in the manufacture of high-performance polyamides, aramids, and epoxy resins.
• Hair Dye & Cosmetic Pigment Synthesis: A principal intermediate in the production of oxidation hair dyes and permanent cosmetic colorants.
• Agrochemical Synthesis: Intermediate in the production of certain herbicides, fungicides, and plant growth regulators.
• Rubber & Tire Industry: Acts as an antioxidant and antiozonant precursor in rubber compounding and vulcanization processes.
• Technical Dye Manufacturing: Core component for synthesizing azo dyes and pigments used for textiles, leather, and plastics.
• Photographic Developer: Used in specific black-and-white photographic developing solutions.
• Research & Development: Serves as a versatile reagent in organic synthesis and material science research within R&D laboratories.

Basic Information

Product Name	p-Phenylenediamine Hydrochloride
CAS No.	55972-71-9
Molecular Formula	C6H10N2·2HCl
Molecular Weight	181.07 g/mol
Synonyms	1,4-Phenylenediamine Dihydrochloride; p-Phenylenediamine Dihydrochloride; 1,4-Diaminobenzene Dihydrochloride; PPD Dihydrochloride; 4-Aminoaniline Dihydrochloride; Benzene-1,4-diamine Dihydrochloride; Ursol D Hydrochloride; Developer PF Hydrochloride
EINECS	Contact for details

Quality Control

Our p-Phenylenediamine Hydrochloride is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing, including HPLC for assay and purity, to ensure it meets high-purity standards suitable for demanding industrial and research applications. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with every shipment to guarantee traceability and compliance.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed to prevent moisture absorption. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 20 ppm

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