Description

m-Phenylenediamine (MPD) is a vital aromatic diamine intermediate, essential for synthesizing high-performance polymers and specialty chemicals. Its bifunctional amine groups make it a versatile building block for creating materials with enhanced thermal stability, mechanical strength, and chemical resistance. This compound is critical for manufacturers in the polymer, dye, epoxy curing agent, and corrosion inhibitor industries seeking reliable and consistent raw material quality.

Application

• Epoxy Resin Curing Agent: A key component for curing epoxy resins, imparting excellent chemical and thermal resistance to coatings, adhesives, and composite materials.
• Polymer Intermediate: Serves as a monomer for producing high-performance polymers like polyamides, polyimides, and aramid fibers (e.g., Nomex-type).
• Dye and Pigment Synthesis: A fundamental precursor in the manufacture of hair dyes, azo dyes, and organic pigments.
• Corrosion Inhibitor: Used in formulations for metal surface treatments and fuel additives to prevent oxidation and corrosion.
• Pharmaceutical Intermediate: Employed in the synthesis of certain active pharmaceutical ingredients (APIs) and fine chemicals.
• Rubber Chemicals: Acts as an antioxidant and antiozonant agent in rubber compounding to extend product life.
• Photographic Developer: Used in specific photographic development processes.
• Research & Development: A valuable reagent in organic synthesis and material science research laboratories.

Basic Information

Product Name	m-Phenylenediamine
CAS No.	108-45-2
Molecular Formula	C6H8N2
Molecular Weight	108.14 g/mol
Synonyms	1,3-Benzenediamine; 1,3-Diaminobenzene; 1,3-Phenylenediamine; m-Diaminobenzene; MPD; meta-Phenylenediamine; Developer 11; C.I. 76025; C.I. Oxidation Base 12; Pelagol Grey D
EINECS	203-584-7

Quality Control

Our m-Phenylenediamine is produced under stringent quality management systems to ensure batch-to-batch consistency and high purity. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing key parameters such as assay, moisture content, and impurity profiles. Our quality commitment aligns with industrial and specialty chemical standards, and we can support requirements for specific applications upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from heat sources and incompatible materials. Due to its hygroscopic (moisture-sensitive) nature and tendency to oxidize, it is recommended to store under an inert atmosphere (e.g., nitrogen) for long-term preservation of quality. Keep container tightly sealed when not in use. Recommended storage temperature: 15-25°C.

Specification

Item	Specification
Appearance	White to light brown crystalline powder or flakes
Identification (IR)	Conforms
Assay (HPLC)	≥ 99.0 %
Melting Point	62 - 65 °C
Loss on Drying	≤ 0.5 %
Residue on Ignition	≤ 0.1 %
Isomer Content (o- & p-)	≤ 0.5 % (Total)

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