Description

Ethyl Hydrogen Malonate is a versatile organic ester and a key intermediate in fine chemical synthesis. Its bifunctional nature, containing both an ester and a free carboxylic acid group, makes it a valuable building block for constructing complex molecular architectures. This compound is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries seeking to develop new active ingredients and advanced materials.

Application

• Pharmaceutical Intermediate: A crucial precursor in the synthesis of active pharmaceutical ingredients (APIs), particularly for compounds containing malonate or β-ketoester moieties.
• Agrochemical Synthesis: Used in the production of herbicides, fungicides, and plant growth regulators, where it serves as a core building block.
• Fine Chemical Production: Employed in the manufacture of flavors, fragrances, dyes, and other specialty organic compounds.
• Polymer Chemistry: Acts as a monomer or cross-linking agent in the synthesis of specialized polymers and resins.
• Chemical Research & Development: A valuable reagent in organic synthesis laboratories for Knoevenagel condensations, Michael additions, and other C-C bond-forming reactions.
• Coordination Chemistry: Can function as a ligand for metal ions, useful in catalysis and material science applications.

Basic Information

Product Name	Ethyl Hydrogen Malonate
CAS No.	1071-46-1
Molecular Formula	C5H8O4
Molecular Weight	132.11 g/mol
Synonyms	Monoethyl malonate; Ethyl malonate half-ester; Malonic acid monoethyl ester; Ethyl hydrogen propanedioate; Carbethoxymethylcarboxylic acid; Ethyl 3-oxopropanoate; Propanedioic acid, monoethyl ester; Monoethyl propanedioate
EINECS	213-990-4

Quality Control

Our Ethyl Hydrogen Malonate is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure it meets high-purity standards suitable for demanding synthetic applications. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with every shipment to guarantee traceability and batch-to-batch consistency.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from heat, sparks, and open flame. The container should be kept tightly sealed when not in use to minimize exposure to moisture.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 0.5%
Residue on Ignition	≤ 0.1%

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