Description

4-n-Butoxyphenyl Isocyanate is a specialized aromatic isocyanate monomer used as a key building block in advanced polymer synthesis. This compound is valued for its ability to introduce the butoxyphenyl moiety, which can impart specific solubility, flexibility, and reactivity characteristics to final materials. It is primarily sought by R&D chemists and process engineers in the agrochemical, pharmaceutical, and high-performance polymer industries for creating custom urethane linkages, coatings, and bioactive intermediates.

Application

• Agrochemical Intermediates: Synthesis of herbicides, fungicides, and plant growth regulators where the butoxyphenyl group enhances biological activity and selectivity.
• Pharmaceutical Building Blocks: Production of active pharmaceutical ingredients (APIs) and prodrugs, particularly in compounds requiring urethane or urea functional groups.
• Specialty Polyurethanes & Coatings: Manufacturing of high-performance coatings, adhesives, sealants, and elastomers (CASE) with tailored properties like weatherability and chemical resistance.
• Liquid Crystal & Electronic Materials: Key precursor in the synthesis of monomers for liquid crystal polymers and other advanced electronic materials.
• Cross-linking Agent: Used to modify resins and polymers, introducing reactive isocyanate sites for further chemical functionalization.
• Chemical Research & Development: Serves as a versatile reagent in organic synthesis for creating novel compounds with specific structural features.

Basic Information

Product Name	4-n-Butoxyphenyl Isocyanate
CAS No.	28439-86-3
Molecular Formula	C11H13NO2
Molecular Weight	191.23 g/mol
Synonyms	p-Butoxyphenyl Isocyanate; 4-Butoxyphenyl Isocyanate; 1-Isocyanato-4-butoxybenzene; 4-n-Butoxy Phenyl Isocyanate; 4-Butoxy Phenyl Isocyanate; Butoxy Phenyl Isocyanate; 4-Butoxyphenylisocyanate; 4-(n-Butoxy)phenyl isocyanate
EINECS	Contact for details

Quality Control

Our 4-n-Butoxyphenyl Isocyanate is produced under strict quality management protocols to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical testing, including chromatography and spectroscopy, to confirm identity and assay. Certificates of Analysis (COA) detailing all relevant specifications are provided with every shipment to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at 15-25°C. Due to its moisture-sensitive (hygroscopic) nature, containers must be kept tightly sealed under a dry inert atmosphere (e.g., nitrogen or argon) to prevent degradation from atmospheric moisture. 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)	~1.08 g/cm³

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