Description

3,4-Dimethylphenyl Isocyanate is a versatile aromatic isocyanate monomer used as a key building block in the synthesis of advanced polymers and fine chemicals. Its value lies in its ability to introduce the reactive isocyanate group into a molecular framework, enabling the creation of custom polyurethanes, coatings, and adhesives with tailored properties. This compound is essential for R&D laboratories and industrial manufacturers in sectors such as specialty polymers, agrochemicals, and pharmaceutical intermediates seeking to develop high-performance materials.

Application

• Polyurethane Synthesis: A key monomer for producing specialized polyurethane elastomers, coatings, and sealants with enhanced chemical resistance and mechanical properties.
• Agrochemical Intermediates: Serves as a critical precursor in the manufacture of certain herbicides, fungicides, and pesticides, where its aromatic structure contributes to biological activity.
• Pharmaceutical Building Block: Used in the research and development of active pharmaceutical ingredients (APIs) and other bioactive molecules.
• Specialty Adhesives & Binders: Incorporated into high-performance adhesive formulations that require specific reactivity profiles and durability.
• Cross-linking Agent: Functions as an effective cross-linker for polymers and resins, improving thermal stability and structural integrity.
• Chemical Research & Development: A valuable reagent for organic synthesis, particularly in reactions involving urethane and urea formation.

Basic Information

Product Name	3,4-Dimethylphenyl Isocyanate
CAS No.	51163-27-0
Molecular Formula	C9H9NO
Molecular Weight	147.17 g/mol
Synonyms	3,4-Xylyl Isocyanate; 1-Isocyanato-3,4-dimethylbenzene; 3,4-Dimethylbenzene Isocyanate; 3,4-Dimethylphenylisocyanate; m,p-Xylylene Isocyanate; 3,4-DMPI; (3,4-Dimethylphenyl)carbimide; Isocyanic Acid 3,4-Dimethylphenyl Ester
EINECS	Contact for details

Quality Control

Our 3,4-Dimethylphenyl Isocyanate is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including assay by GC or HPLC and impurity profiling, to ensure it meets high-purity standards suitable for industrial and research applications. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and specific test results is provided with every shipment and is 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). This material is hygroscopic (moisture-sensitive) and must be kept under a dry inert atmosphere (e.g., nitrogen) to prevent degradation and polymerization. Keep away from heat, sparks, open flames, and incompatible materials such as alcohols, amines, and strong bases.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (GC/HPLC)	≥ 98.0%
Water Content (KF)	≤ 0.1%
Specific Gravity (20°C)	1.08 - 1.12

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