Description

3-Chloro-4-Methylphenylisocyanate is a versatile aromatic isocyanate monomer used as a key building block in the synthesis of advanced polymers and fine chemicals. Its reactive isocyanate group enables the formation of urethane, urea, and other functional linkages, making it critical for creating materials with tailored properties. This compound is essential for R&D and production in the agrochemical, pharmaceutical, and specialty polymer industries, where it serves as a precursor for active ingredients and high-performance resins.

Application

• Agrochemical Intermediates: Primary use as a key synthon for the production of herbicides, fungicides, and insecticides, particularly urea and carbamate-based products.
• Pharmaceutical Synthesis: Serves as a crucial building block for creating active pharmaceutical ingredients (APIs) and drug candidates, especially those requiring specific aromatic-urea scaffolds.
• Polyurethane & Polymer Chemistry: Used in the formulation of specialty polyurethanes, coatings, adhesives, and elastomers to impart specific chemical resistance and mechanical properties.
• Cross-linking Agent: Functions as an effective cross-linker for resins and polymers, enhancing thermal stability and structural integrity.
• Chemical Research & Development: A valuable reagent in organic synthesis for introducing the phenylisocyanate moiety into more complex molecular architectures.
• Dye & Pigment Manufacturing: Employed in the synthesis of certain high-performance dyes and organic pigments.

Basic Information

Product Name	3-Chloro-4-Methylphenylisocyanate
CAS No.	51488-20-1
Molecular Formula	C8H6ClNO
Molecular Weight	167.59 g/mol
Synonyms	3-Chloro-p-tolyl isocyanate; 1-Chloro-3-isocyanato-4-methylbenzene; 4-Methyl-3-chlorophenyl isocyanate; 3-Chloro-4-methylbenzenisocyanate; Isocyanic acid, 3-chloro-4-methylphenyl ester; (3-Chloro-4-methylphenyl)isocyanate; NSC 163081
EINECS	Contact for details

Quality Control

Our 3-Chloro-4-Methylphenylisocyanate is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including assay by HPLC and impurity profile analysis, to ensure high purity and consistency. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and specific tests is provided with every shipment to guarantee it meets your precise application requirements.

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). Due to its hygroscopic and moisture-sensitive nature, the container must be kept tightly sealed under a dry inert atmosphere (e.g., nitrogen) to prevent hydrolysis and degradation. 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 (HPLC)	≥ 98.0%
Water Content (KF)	≤ 0.1%
Density (at 20°C)	~1.25 g/cm³

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