Description

n-Butyl Fumarate is a high-purity diester of fumaric acid and n-butanol, widely recognized for its role as a versatile chemical intermediate and monomer. Its value lies in its ability to impart flexibility, durability, and specific functional properties to polymer chains. This product is essential for manufacturers in the polymer, coatings, and specialty chemical industries seeking reliable raw materials for advanced formulations.

Application

• Polymer & Resin Production: Acts as a key monomer or co-monomer in the synthesis of unsaturated polyester resins (UPR) and alkyd resins, enhancing flexibility and cross-linking density.
• Coatings & Inks: Used in the formulation of high-performance industrial coatings, printing inks, and adhesives to improve film formation, adhesion, and chemical resistance.
• Plasticizers & Modifiers: Serves as a reactive plasticizer or internal modifier for various polymers, helping to adjust glass transition temperature (Tg) and mechanical properties.
• Chemical Synthesis: An important intermediate in organic synthesis for producing specialty chemicals, pharmaceuticals, and agrochemicals.
• Cross-linking Agent: Utilized in cross-linking reactions for thermosetting polymers, contributing to improved thermal stability and network structure.

Basic Information

Product Name	n-Butyl Fumarate
CAS No.	105-76-0
Molecular Formula	C8H12O4
Molecular Weight	172.18 g/mol
Synonyms	Butyl Fumarate; Dibutyl Fumarate; Fumaric Acid Dibutyl Ester; 1-Butyl Fumarate; n-Butyl Hydrogen Fumarate; Butyl (E)-2-Butenedioate; (E)-2-Butenedioic Acid Dibutyl Ester
EINECS	203-328-4

Quality Control

Our n-Butyl Fumarate is manufactured under a stringent quality management system to ensure batch-to-batch consistency and high purity. Quality is verified through comprehensive analytical testing, including gas chromatography (GC) and infrared spectroscopy (IR). A Certificate of Analysis (COA) detailing purity, identity, and key physical parameters is provided with every shipment to support your quality assurance protocols.

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). Keep away from heat sources, open flames, and incompatible materials such as strong oxidizing agents.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (GC)	≥ 98.0%
Acidity (as Fumaric Acid)	≤ 0.5%
Water Content (KF)	≤ 0.1%
Specific Gravity (20°C)	1.045 - 1.055
Refractive Index (20°C)	1.445 - 1.455

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