Description

4-Bromo-2-Methylphenyl Isocyanate is a versatile halogenated aromatic isocyanate monomer, a key building block for synthesizing advanced polymers and fine chemicals. Its value lies in the unique reactivity of the isocyanate group and the steric/electronic influence of the bromine and methyl substituents on the aromatic ring, enabling precise material customization. This compound is essential for R&D and production in the agrochemical, pharmaceutical, and specialty polymer industries, where it serves as a critical intermediate for creating compounds with specific biological or material properties.

Application

• Agrochemical Intermediate: A crucial precursor for synthesizing novel herbicides, fungicides, and insecticides, where the bromine atom facilitates further functionalization.
• Pharmaceutical Building Block: Used in the research and development of active pharmaceutical ingredients (APIs), particularly in creating urea and carbamate derivatives with targeted therapeutic effects.
• Polymer & Resin Synthesis: Serves as a monomer for producing specialized polyurethanes, polyureas, and other polymers, imparting flame retardancy and enhanced thermal stability due to the bromine content.
• Chemical Research & Development: Employed in academic and industrial labs for exploring new organic reactions and creating complex molecular architectures.
• Crosslinking Agent: Functions as an effective crosslinker for coatings, adhesives, and elastomers, improving their mechanical strength and chemical resistance.
• Dye & Pigment Intermediate: Utilized in the synthesis of specialized colorants and functional dyes for high-performance applications.

Basic Information

Product Name	4-Bromo-2-Methylphenyl Isocyanate
CAS No.	1591-98-6
Molecular Formula	C8H6BrNO
Molecular Weight	212.05 g/mol
Synonyms	2-Methyl-4-bromophenyl isocyanate; 4-Bromo-o-tolyl isocyanate; 1-Bromo-4-isocyanato-2-methylbenzene; Isocyanic acid, 4-bromo-2-methylphenyl ester; 4-Bromo-2-methylbenzenisocyanate; (4-Bromo-2-methylphenyl)isocyanate; NSC 163983
EINECS	Contact for details

Quality Control

Our production of 4-Bromo-2-Methylphenyl Isocyanate adheres to stringent quality management protocols to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical testing, including assay by titration, identification by FT-IR, and impurity profiling by GC/HPLC. A Certificate of Analysis (COA) detailing all test results is provided with every shipment, confirming compliance with agreed specifications. We support customer audits and can tailor quality parameters to meet specific project requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated place at a controlled room temperature (15-25°C). This product is hygroscopic (moisture-sensitive) and must be kept under a dry inert atmosphere (e.g., nitrogen) after opening to prevent decomposition. Keep away from strong bases and organic solvents.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (GC/Titration)	≥ 98.0%
Water Content (KF)	≤ 0.5%
Related Substances (GC/HPLC)	≤ 2.0% total

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