Description

4-n-Butylphenyl Isocyanate is a specialized aromatic isocyanate monomer used as a key building block in advanced polymer synthesis. This compound is critical for introducing specific hydrophobic and structural properties into final materials, enabling enhanced performance characteristics. It is primarily utilized by R&D chemists and production engineers in the agrochemical, pharmaceutical, and specialty polymer industries for creating high-value intermediates, coatings, and adhesives.

Application

• Agrochemical Intermediate: Synthesis of phenylurea-based herbicides and other crop protection agents.
• Pharmaceutical Building Block: Production of active pharmaceutical ingredients (APIs) and drug candidates requiring specific aromatic isocyanate functionality.
• Polymer Modification: Key monomer for synthesizing polyurethanes and polyureas with tailored flexibility, chemical resistance, and adhesion properties.
• Specialty Coatings & Adhesives: Formulation of high-performance industrial coatings, sealants, and adhesives that demand durability and environmental resistance.
• Crosslinking Agent: Used in the production of resins and elastomers to control crosslink density and material hardness.
• Chemical Research: Valuable reagent in organic synthesis for introducing the butylphenyl group via urethane or urea linkages.

Basic Information

Product Name	4-n-Butylphenyl Isocyanate
CAS No.	69342-47-8
Molecular Formula	C11H13NO
Molecular Weight	175.23 g/mol
Synonyms	p-Butylphenyl Isocyanate; 4-Butylphenyl Isocyanate; 1-Isocyanato-4-butylbenzene; 4-n-Butyl Phenyl Isocyanate; NSC 403058; Butylphenyl isocyanate (mixed isomers); p-n-Butylphenyl isocyanate
EINECS	Contact for details

Quality Control

Our 4-n-Butylphenyl Isocyanate is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including assay by GC/HPLC and impurity profiling, to ensure high purity and consistency. A Certificate of Analysis (COA) detailing specific results is provided with every shipment to guarantee compliance with your research or production specifications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at controlled room temperature (15-25°C). This material is hygroscopic (moisture-sensitive) and must be kept under a dry inert atmosphere (e.g., nitrogen) to prevent decomposition. 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/HPLC)	≥ 98.0%
Water Content (KF)	≤ 0.1%
Density (at 20°C)	~1.04 g/cm³

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