Description

Diethyl Maleate is a versatile organic ester widely used as a key chemical intermediate and reactive diluent. Its primary value lies in its ability to undergo addition and polymerization reactions, making it essential for modifying polymer properties and synthesizing specialty chemicals. This product is particularly needed by manufacturers in the polymer, coatings, and agrochemical industries for producing resins, plasticizers, and active ingredients.

Application

• Polymer & Resin Modification: Acts as a reactive diluent and co-monomer in the production of unsaturated polyester resins (UPR) and alkyd resins.
• Chemical Synthesis Intermediate: Serves as a crucial building block for the synthesis of agrochemicals, pharmaceuticals, and other fine chemicals via Michael addition or Diels-Alder reactions.
• Plasticizer Production: Used in the manufacture of specialty plasticizers and as an intermediate for succinate-type plasticizers.
• Coatings & Adhesives: Imparts flexibility and cross-linking properties in coating formulations and adhesive systems.
• Flavor & Fragrance Industry: Employed as a precursor or intermediate in the synthesis of certain aroma compounds.
• Lubricant Additives: Functions as an intermediate for creating ashless anti-wear and extreme pressure additives.

Basic Information

Product Name	Diethyl Maleate
CAS No.	141-05-9
Molecular Formula	C8H12O4
Molecular Weight	172.18 g/mol
Synonyms	Diethyl (Z)-Butenedioate; Maleic Acid Diethyl Ester; Ethyl Maleate; Diethyl (Z)-2-Butenedioate; DEM; Diethyl cis-Butenedioate; Butenedioic Acid (Z)-, Diethyl Ester; Diethyl Maleinate
EINECS	205-451-9

Quality Control

Our Diethyl Maleate is produced under a stringent quality management system to ensure batch-to-batch consistency and high purity. We provide comprehensive analytical testing, including gas chromatography (GC) for assay and impurity profiling, to meet the exacting requirements of industrial and fine chemical synthesis. Certificates of Analysis (COA) are available for every shipment upon request.

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, sparks, open flames, and incompatible materials such as strong oxidizing agents, acids, and bases.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (GC)	≥ 98.5%
Water Content (KF)	≤ 0.1%
Acidity (as Maleic Acid)	≤ 0.1%
Refractive Index (n20D)	1.438 - 1.442
Specific Gravity (20/20°C)	1.065 - 1.075

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