Description

Monoethyl Maleate is a versatile organic ester compound, primarily valued as a key reactive intermediate in chemical synthesis. Its bifunctional structure, featuring both an ester and a carboxylic acid group, makes it an essential building block for creating polymers, specialty chemicals, and fine pharmaceuticals. This product is particularly critical for manufacturers in the polymer, agrochemical, and pharmaceutical industries seeking to develop advanced materials and active ingredients.

Application

• Polymer & Resin Synthesis: Acts as a reactive monomer or cross-linking agent in the production of specialty polymers, coatings, and adhesives.
• Pharmaceutical Intermediates: Serves as a crucial building block in the synthesis of various active pharmaceutical ingredients (APIs) and fine chemicals.
• Agrochemical Manufacturing: Used in the synthesis of herbicides, fungicides, and other crop protection agents.
• Organic Synthesis: Functions as a dienophile in Diels-Alder reactions and as a precursor for other maleate and fumarate derivatives.
• Surface Active Agents: Can be utilized in the production of specific surfactants and emulsifiers.
• Chemical Research & Development: Employed in R&D laboratories for developing novel compounds and materials.

Basic Information

Product Name	Monoethyl Maleate
CAS No.	3990-03-2
Molecular Formula	C6H8O4
Molecular Weight	144.13 g/mol
Synonyms	Ethyl hydrogen maleate; Maleic acid monoethyl ester; 2-Butenedioic acid (2Z)-, monoethyl ester; Monoethyl maleate; Ethyl maleate (partial ester); Monoethyl ester of maleic acid
EINECS	223-635-4

Quality Control

Our Monoethyl Maleate is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure it meets precise specifications for identity, purity, and impurity profiles. A detailed Certificate of Analysis (COA) is provided with every shipment, documenting key parameters such as assay, appearance, and specific impurities. We adhere to cGMP principles where applicable to ensure consistent quality and traceability for our global B2B customers.

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 strong bases and incompatible materials such as oxidizing agents. The container must be kept tightly sealed to minimize exposure to moisture and air.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	60 - 65 °C
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Related Substances (HPLC)	Total impurities ≤ 2.0%

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