Description

4-tert-Butylphenyl Isocyanate is a versatile aromatic isocyanate monomer characterized by its bulky tert-butyl substituent, which influences its reactivity and the properties of derived polymers. This compound is a critical building block in the synthesis of high-performance polyurethanes, coatings, and specialty polymers, offering enhanced light stability and chemical resistance. It is essential for manufacturers in the advanced materials, agrochemical, and pharmaceutical intermediates sectors seeking to develop products with tailored performance characteristics.

Application

• Polyurethane Synthesis: A key monomer for producing light-stable and weatherable polyurethane elastomers, coatings, and adhesives.
• Agrochemical Intermediates: Used in the manufacture of phenylurea-based herbicides and other crop protection agents.
• Pharmaceutical Building Blocks: Serves as a precursor in synthesizing various active pharmaceutical ingredients (APIs) and fine chemicals.
• Specialty Polymers & Resins: Incorporated into polymers requiring specific thermal, mechanical, or solubility properties.
• Cross-linking Agent: Functions as a cross-linker in high-performance coatings and composite materials to improve durability.
• Chemical Research & Development: A valuable reagent for organic synthesis and material science R&D.

Basic Information

Product Name	4-tert-Butylphenyl Isocyanate
CAS No.	1943-67-5
Molecular Formula	C11H13NO
Molecular Weight	175.23 g/mol
Synonyms	p-tert-Butylphenyl Isocyanate; 1-Isocyanato-4-tert-butylbenzene; 4-(1,1-Dimethylethyl)phenyl Isocyanate; 4-tert-Butyl Phenyl Isocyanate; PTBPI; NSC 403119; tert-Butylphenyl Isocyanate; 4-t-Butylphenyl Isocyanate
EINECS	217-746-5

Quality Control

Our 4-tert-Butylphenyl Isocyanate is produced under stringent quality management systems. Each batch undergoes rigorous analytical testing, including assay by titration and impurity profiling by GC/HPLC, to ensure high purity and consistency. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and specific impurity limits is provided with every shipment to guarantee compliance with your technical requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at temperatures between 15-25°C. Due to its highly volatile and moisture-sensitive nature, containers must be kept tightly sealed under a dry inert atmosphere (e.g., nitrogen) to prevent polymerization or hydrolysis. Keep away from heat, open flames, and strong bases.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (GC/Titration)	≥ 98.0%
Color (APHA)	≤ 50
Water Content (KF)	≤ 0.1%
Hydrolyzable Chloride	≤ 0.01%

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