Description

4-[(4-Aminophenyl)Sulfonyl]-1,3-Benzenediamine is a specialized aromatic diamine derivative featuring a sulfonyl bridge, which imparts unique chemical reactivity and structural properties. This compound is a critical high-purity intermediate for synthesizing advanced polymers and functional dyes, where precise molecular structure is paramount for performance. It is essential for R&D and production in the pharmaceutical, advanced material science, and specialty chemical industries seeking to develop novel polyimides, azo dyes, or cross-linking agents.

Application

• Polymer Synthesis: A key monomer for the production of high-performance polyimides and polyamides, offering enhanced thermal stability and mechanical strength.
• Dye & Pigment Intermediate: Serves as a crucial building block in the manufacture of complex azo dyes and organic pigments, providing vivid and stable colors.
• Pharmaceutical Intermediate: Used in the research and development of active pharmaceutical ingredients (APIs), particularly those requiring sulfonamide or diamine functionalities.
• Cross-linking Agent: Functions as a cross-linker in epoxy resin systems and other thermosetting polymers to improve network density and chemical resistance.
• Liquid Crystal & OLED Materials: Employed in the synthesis of organic electronic materials for displays and lighting applications.
• Corrosion Inhibitor Formulation: Used as a precursor in creating advanced corrosion inhibitors for industrial coatings.
• Analytical Reagent: Acts as a standard or reagent in analytical chemistry for method development and quality control.

Basic Information

Product Name	4-[(4-Aminophenyl)Sulfonyl]-1,3-Benzenediamine
CAS No.	35880-91-2
Molecular Formula	C12H13N3O2S
Molecular Weight	263.32 g/mol
Synonyms	1,3-Benzenediamine, 4-[(4-aminophenyl)sulfonyl]-; 4,4'-Diaminodiphenyl Sulfone-2,4'-Diamine; 2,4-Diaminophenyl 4-Aminophenyl Sulfone; Dapsone Diamine Derivative; 4-Aminophenyl 2,4-Diaminophenyl Sulfone; Bis(4-amino-3-aminophenyl) Sulfone (isomer); DADPS amine derivative; Sulfonyl-bis(1,3-benzenediamine) derivative
EINECS	Contact for details

Quality Control

We maintain stringent quality control protocols for this high-purity intermediate. Production follows current Good Manufacturing Practice (cGMP) principles where applicable, and every batch is analyzed to meet exacting customer specifications. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with each shipment to ensure traceability and compliance for your critical applications.

Storage

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

Specification

Item	Specification
Appearance	Light yellow to beige crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 1.0%
Heavy Metals (as Pb)	≤ 20 ppm
Residue on Ignition	≤ 0.1%
Related Substances (HPLC)	Individual impurity ≤ 0.5%; Total impurities ≤ 2.0%

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