Description

4,4'-Diaminobenzenesulphanilide is a high-purity aromatic amine derivative with a sulfonamide linkage, serving as a critical intermediate in advanced chemical synthesis. Its bifunctional structure makes it a valuable building block for creating complex molecules with specific properties. This compound is essential for manufacturers in the pharmaceutical and specialty chemical industries seeking to develop high-performance dyes, pigments, and active pharmaceutical ingredients (APIs).

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of sulfa drugs and other active pharmaceutical ingredients (APIs).
• Dye and Pigment Manufacturing: Used as a coupling agent and intermediate for producing azo dyes and high-performance organic pigments.
• Polymer Chemistry: Acts as a monomer or cross-linking agent in the production of specialty polyamides, polyimides, and epoxy resins.
• Chemical Research & Development: Serves as a versatile building block in organic synthesis for novel compound libraries.
• Photographic Chemicals: Utilized in the formulation of certain light-sensitive compounds and developers.
• Liquid Crystal & Electronic Materials: A potential intermediate for materials used in displays and electronic applications.

Basic Information

Product Name	4,4'-Diaminobenzenesulphanilide
CAS No.	16803-97-7
Molecular Formula	C12H13N3O2S
Molecular Weight	263.32 g/mol
Synonyms	4,4'-Sulfonyldianiline; 4-Aminophenyl sulfone; Dapsone; Diaphenylsulfone; Bis(4-aminophenyl) sulfone; p,p'-Sulfonyldianiline; 4,4'-Diaminodiphenyl sulfone; DADPS
EINECS	240-831-7

Quality Control

Our 4,4'-Diaminobenzenesulphanilide is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets exacting standards for industrial and research use. Certificates of Analysis (COA) detailing all specifications are available upon request.

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 heat, sparks, and open flame. Due to its light-sensitive nature, containers should be amber-colored or stored in light-resistant packaging.

Specification

Item	Specification
Appearance	White to light yellow crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	175 - 180 °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.