Description

p-Phenylenediamine (PPD) is a primary aromatic diamine, serving as a fundamental building block in the synthesis of high-performance polymers and dyes. Its chemical structure makes it a critical intermediate for creating materials with exceptional durability and colorfastness. This compound is essential for manufacturers in the polymer, dye, textile, and personal care industries seeking reliable and consistent raw materials for their production processes.

Application

• Polymer Industry: A key monomer for the production of high-strength, thermally stable aramid fibers (e.g., Kevlar®-type polymers) and specialty polyurethanes.
• Hair Dye & Cosmetic Formulations: The primary oxidative precursor in permanent hair colorants and dyes, providing long-lasting color.
• Textile & Leather Dyeing: Used as an intermediate in the manufacture of azo dyes and pigments for coloring textiles, leather, and furs.
• Rubber & Tire Manufacturing: Acts as an antioxidant and antiozonant in rubber vulcanization, enhancing the lifespan of tires and rubber products.
• Photographic Development: Serves as a developing agent in black-and-white photographic chemicals.
• Chemical Synthesis: An important intermediate for pharmaceuticals, agrochemicals, and other fine chemicals.

Basic Information

Product Name	p-Phenylenediamine
CAS No.	106-50-3
Molecular Formula	C6H8N2
Molecular Weight	108.14 g/mol
Synonyms	1,4-Diaminobenzene; 1,4-Benzenediamine; 1,4-Phenylenediamine; PPD; p-Aminoaniline; Ursol D; Fouramine D; Tertral D; Fourrine 1; Developer PF; Paramine
EINECS	203-404-7

Quality Control

Our p-Phenylenediamine is manufactured under strict quality management systems to ensure batch-to-batch consistency and high purity. We provide comprehensive quality assurance, with products tested against rigorous in-house specifications. A Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is supplied with every shipment to guarantee compliance with your technical requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from heat and incompatible materials. Due to its hygroscopic and easily oxidized nature, it is recommended to store under an inert atmosphere (e.g., nitrogen) for long-term preservation. Keep container tightly sealed when not in use to minimize moisture absorption and oxidation.

Specification

Item	Specification
Appearance	White to light purple or brown crystalline powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 99.0%
Melting Point	139 - 142 °C
Loss on Drying	≤ 0.5%
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.