Description

3,3'-Dihydroxybenzidine is an important aromatic diamine derivative, primarily utilized as a versatile chemical intermediate in advanced synthesis. Its value lies in its bifunctional hydroxyl and amino groups, which enable its use in the production of high-performance polymers, dyes, and specialty chemicals. This compound is particularly relevant for manufacturers in the polymer, pigment, and pharmaceutical intermediate sectors seeking reliable, high-purity raw materials for their processes.

Application

• Polymer Intermediate: A key monomer for the synthesis of high-performance polyimides, polybenzimidazoles (PBI), and other heat-resistant polymers.
• Dye and Pigment Manufacturing: Serves as a crucial precursor for azo dyes, pigments, and colorants used in textiles, inks, and plastics.
• Pharmaceutical Synthesis: Used as a building block in the research and development of active pharmaceutical ingredients (APIs) and complex organic molecules.
• Chemical Research & Development: Employed in organic synthesis and as a reagent for developing novel chemical entities and materials.
• Adhesive and Coating Formulations: Acts as a cross-linking agent or hardener in specialty epoxy and polyurethane systems.
• Analytical Chemistry: Can be used as a reagent or standard in specific chromatographic or spectroscopic analytical methods.

Basic Information

Item	Details
Product Name	3,3'-Dihydroxybenzidine
CAS No.	2373-98-0
Molecular Formula	C12H12N2O2
Molecular Weight	216.24 g/mol
Synonyms	3,3'-Diamino-4,4'-dihydroxybiphenyl; 4,4'-Dihydroxy-3,3'-diaminobiphenyl; o,o'-Dihydroxybenzidine; 3,3'-Dihydroxy-4,4'-diaminobiphenyl; Benzidine-3,3'-diol; Biphenyl-3,3'-diol-4,4'-diamine; (1,1'-Biphenyl)-4,4'-diamine-3,3'-diol
EINECS	219-145-8

Quality Control

Our 3,3'-Dihydroxybenzidine is produced under strict quality management protocols. Each batch undergoes comprehensive analytical testing to ensure it meets precise purity and compositional specifications. A Certificate of Analysis (COA) detailing key parameters such as assay, identity, and impurity profiles is provided with every shipment to guarantee traceability and compliance with your quality requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from incompatible materials such as strong oxidizing agents.

Specification

Item	Specification
Appearance	Light brown to grayish powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 1.0%
Heavy Metals	≤ 20 ppm
Residue on Ignition	≤ 0.1%

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