Description

m-Tolyl Isocyanate is a versatile aromatic isocyanate monomer essential for synthesizing high-performance polymers and specialty chemicals. Its primary value lies in its reactivity, serving as a key building block to introduce the meta-tolyl group into larger molecular structures, thereby modifying material properties. This compound is critically needed by manufacturers in the polyurethane, agrochemical, and pharmaceutical intermediate sectors for producing coatings, adhesives, elastomers, and active ingredients.

Application

• Polyurethane Industry: A key monomer for producing specialized polyurethane prepolymers, coatings, adhesives, sealants, and elastomers (PUR, CASE).
• Agrochemical Synthesis: Used as an intermediate in the manufacture of pesticides, herbicides, and fungicides, where the meta-tolyl moiety is a critical functional group.
• Pharmaceutical Intermediates: Serves as a building block in the synthesis of active pharmaceutical ingredients (APIs) and other fine chemicals.
• Chemical Research & Development: Employed in R&D laboratories for developing novel polymers, dendrimers, and other advanced materials.
• Cross-linking Agent: Functions as a cross-linker in resin systems to enhance thermal stability, chemical resistance, and mechanical strength.
• Specialty Coatings: Used in formulating high-performance industrial and automotive coatings that require durability and weatherability.

Basic Information

Product Name	m-Tolyl Isocyanate
CAS No.	621-29-4
Molecular Formula	C8H7NO
Molecular Weight	133.15 g/mol
Synonyms	3-Methylphenyl isocyanate; 3-Tolyl isocyanate; Isocyanic acid, 3-methylphenyl ester; m-Methylphenyl isocyanate; meta-Tolyl isocyanate; 3-Isocyanato-1-methylbenzene; NSC 8765
EINECS	210-684-7

Quality Control

Our m-Tolyl Isocyanate is produced under strict quality management protocols. Every batch undergoes comprehensive analytical testing, including chromatography (GC/HPLC) and titration methods, to ensure high purity and consistency. We provide detailed Certificates of Analysis (COA) with each shipment, confirming compliance with agreed specifications. Our quality system is designed to meet the rigorous demands of industrial and fine chemical synthesis.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive) and must be kept under a dry inert atmosphere (e.g., nitrogen) to prevent degradation. Keep away from heat, sparks, open flames, and incompatible materials such as alcohols, amines, and strong bases.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (GC)	≥ 98.0%
Color (APHA)	≤ 50
Density (20°C)	1.05 - 1.07 g/cm³
Water Content (KF)	≤ 0.1%

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