Description

1-Isocyanato-3-(3-Isocyanatophenyl)Sulfonyl-Benzene is a specialized aromatic diisocyanate monomer featuring a sulfone linkage, which imparts unique thermal and chemical stability to the resulting polymers. This compound is a critical building block for the synthesis of high-performance polyurethanes, polyureas, and other advanced polymeric materials. It is primarily utilized by R&D chemists and industrial manufacturers in the coatings, adhesives, and specialty plastics sectors seeking to enhance product durability and performance under demanding conditions.

Application

• High-Performance Polyurethane Coatings: As a key monomer for formulating advanced industrial and protective coatings with superior chemical resistance, thermal stability, and weatherability.
• Specialty Adhesives and Sealants: Used in the synthesis of polyurethane-based adhesives requiring excellent bond strength and durability, particularly in automotive and aerospace applications.
• Advanced Elastomers and Thermoplastics: Serves as a precursor for engineering plastics and elastomers that must perform in high-temperature or corrosive environments.
• Crosslinking Agent for Polymers: Functions as an effective crosslinker to modify the properties of existing polymer systems, improving hardness, tensile strength, and solvent resistance.
• Chemical Intermediate for R&D: Employed in pharmaceutical and agrochemical research for the synthesis of novel compounds containing sulfone and urethane/urea functionalities.
• Composite Materials: Used in the production of fiber-reinforced composites for the marine, construction, and transportation industries.

Basic Information

Item	Details
Product Name	1-Isocyanato-3-(3-Isocyanatophenyl)Sulfonyl-Benzene
CAS No.	47119-84-6
Molecular Formula	C14H8N2O4S
Molecular Weight	300.29 g/mol
Synonyms	3,3'-Sulfonyldibenzenamine, 4,4'-diisocyanato-; Bis(3-isocyanatophenyl) sulfone; 4,4'-Diisocyanatodiphenyl sulfone; DIDS; 3,3'-Disulfanediylbis(benzene-1-isocyanate); Bis(3-isocyanatophenyl) sulphone; Sulfonyl diisocyanate; DPSDI
EINECS	Contact for details

Quality Control

Our production of 1-Isocyanato-3-(3-Isocyanatophenyl)Sulfonyl-Benzene adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing, including assay by HPLC, isocyanate content titration, and impurity profiling, to ensure high purity and consistent performance. A detailed Certificate of Analysis (COA) is provided with each shipment, confirming compliance with agreed specifications.

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). This material is hygroscopic (moisture-sensitive) and light-sensitive. Containers must be kept tightly sealed under a dry inert atmosphere (e.g., nitrogen or argon) to prevent moisture ingress and premature polymerization. Keep away from heat, sparks, open flames, and incompatible materials such as alcohols, amines, and strong bases.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0 %
Isocyanate Content (Titration)	Contact for details
Melting Point	Contact for details
Moisture (KF)	≤ 0.1 %
Heavy Metals (as Pb)	≤ 10 ppm

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