Description

3-Chloro-5-Methylphenylisocyanate 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 providing a reactive isocyanate group attached to a substituted phenyl ring, enabling the creation of specialized polyurethanes, coatings, and agrochemical intermediates with tailored properties. This compound is essential for R&D and production in industries focused on high-performance materials, including specialty adhesives, elastomers, and pharmaceutical active ingredients.

Application

• Polyurethane Precursor: A critical monomer for synthesizing specialized polyurethane resins, foams, and coatings with enhanced chemical resistance and mechanical properties.
• Agrochemical Intermediates: Serves as a key building block in the manufacture of advanced herbicides, fungicides, and pesticides.
• Pharmaceutical Synthesis: Used in the research and development of active pharmaceutical ingredients (APIs) and other bioactive molecules.
• Specialty Adhesives & Sealants: Imparts durability and adhesion in high-performance industrial adhesive formulations.
• Polymer Modification: Employed to modify the properties of existing polymers, introducing specific functional groups for targeted applications.
• Cross-linking Agent: Functions as an effective cross-linker in coatings and resin systems to improve thermal stability and hardness.
• Chemical Research (R&D): A valuable reagent in organic synthesis and material science research for creating novel compounds.

Basic Information

Product Name	3-Chloro-5-Methylphenylisocyanate
CAS No.	91456-35-8
Molecular Formula	C8H6ClNO
Molecular Weight	167.59 g/mol
Synonyms	3-Chloro-5-methylphenyl isocyanate; 5-Chloro-3-methylphenyl isocyanate; 1-Chloro-3-isocyanato-5-methylbenzene; 3-Methyl-5-chlorophenyl isocyanate; Isocyanic acid, 3-chloro-5-methylphenyl ester; (3-Chloro-5-methylphenyl)isocyanate; 3-Chloro-5-methylbenzenisocyanate
EINECS	Contact for details

Quality Control

Our 3-Chloro-5-Methylphenylisocyanate is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including chromatography (HPLC/GC) and spectroscopic methods, to ensure high purity and consistency. Certificates of Analysis (COA) documenting identity, assay, and impurity profiles are available for all shipments. We are committed to meeting the stringent requirements of our global industrial and research partners.

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 product is hygroscopic (moisture-sensitive) and must be kept under an inert atmosphere (e.g., nitrogen or argon) after opening 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 to structure
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.