Description

[1,1'-Biphenyl]-4,4'-Diamine Sulphate is a high-purity sulfate salt derivative of benzidine, a key aromatic diamine intermediate. This compound is valued for its role as a stable and convenient precursor in the synthesis of advanced organic materials and colorants. It is primarily required by manufacturers in the polymer, dye, and specialty chemical industries for producing polyimides, azo dyes, and other high-performance compounds.

Application

• Polymer Synthesis: A crucial monomer for the production of high-temperature resistant polyimide resins and fibers.
• Dye & Pigment Manufacturing: Serves as a key diazo component in the synthesis of azo dyes and organic pigments.
• Pharmaceutical Intermediates: Used in the research and development of specialized active pharmaceutical ingredients (APIs).
• Liquid Crystal Materials: Acts as a building block in the synthesis of monomers for liquid crystal polymers (LCPs).
• Adhesive & Coating Formulations: Imparts thermal stability and mechanical strength in advanced industrial coatings and adhesives.
• Chemical Research: Employed as a standard or reagent in analytical chemistry and organic synthesis research.

Basic Information

Product Name	[1,1'-Biphenyl]-4,4'-Diamine Sulphate
CAS No.	21136-70-9
Molecular Formula	C12H14N2O4S
Molecular Weight	282.32 g/mol
Synonyms	Benzidine Sulfate; 4,4'-Diaminobiphenyl Sulfate; p,p'-Diaminodiphenyl Sulfate; [1,1'-Biphenyl]-4,4'-diamine, sulfate (1:1); Benzidine Sulphate; DADPS; Biphenyl-4,4'-diamine sulfate
EINECS	244-199-6

Quality Control

Our [1,1'-Biphenyl]-4,4'-Diamine Sulphate is produced under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure it meets precise specifications for identity, purity, and impurity profiles. A Certificate of Analysis (COA) detailing the results is provided with every shipment to guarantee traceability and compliance with your 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	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm

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