Description

Phenylendiamine CAS NO 25265-76-3 is a versatile aromatic diamine compound used as a key intermediate in advanced chemical synthesis. Its primary value lies in its bifunctional reactivity, enabling the production of high-performance polymers and specialty chemicals. This product is essential for manufacturers in the polymer, agrochemical, and pharmaceutical industries seeking reliable building blocks for complex molecular architectures.

Application

• Polymer Industry: As a monomer for the production of polyamides, polyimides, and epoxy curing agents, imparting thermal stability and mechanical strength.
• Agrochemical Synthesis: Serves as a crucial intermediate in the manufacture of herbicides, fungicides, and plant growth regulators.
• Pharmaceutical Intermediates: Used in the synthesis of active pharmaceutical ingredients (APIs) and diagnostic agents.
• Dye and Pigment Production: A key precursor for azo dyes and other complex colorants.
• Corrosion Inhibitors: Formulation component for protective coatings and metal treatment solutions.
• Adhesive and Resin Systems: Cross-linking agent in high-strength industrial adhesives and composite resins.

Basic Information

Product Name	Phenylendiamine
CAS No.	25265-76-3
Molecular Formula	C6H8N2
Molecular Weight	108.14 g/mol
Synonyms	1,4-Phenylenediamine; p-Phenylenediamine; PPD; 1,4-Diaminobenzene; 1,4-Benzenediamine; p-Aminoaniline; 4-Aminoaniline; Benzene-1,4-diamine
EINECS	Contact for details

Quality Control

Our Phenylendiamine is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing, including assay, impurity profiling, and identity confirmation, to ensure it meets the high standards required for industrial and fine chemical applications. Certificates of Analysis (COA) documenting purity, physical characteristics, and test results are provided with every shipment and are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic and easily oxidized nature, the container must be kept tightly sealed under an inert atmosphere after opening to prevent moisture absorption and degradation. Keep away from strong oxidizing agents, acids, and bases.

Specification

Item	Specification
Appearance	White to light beige crystalline powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.5%
Melting Point	139 - 141 °C
Loss on Drying	≤ 0.5%
Heavy Metals (as Pb)	≤ 10 ppm
Related Substances (HPLC)	Individual ≤ 0.5%, Total ≤ 1.0%

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