Description

Diethyl Diethylmalonate is a versatile diester of malonic acid, serving as a critical building block in organic synthesis. Its value lies in its dual active methylene group, which readily undergoes alkylation and condensation reactions to construct complex molecular frameworks. This compound is essential for manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries seeking to synthesize active ingredients, fragrances, and advanced intermediates.

Application

• Pharmaceutical Intermediates: Key starting material for the synthesis of barbiturates, vitamins (e.g., Vitamin B1), and various active pharmaceutical ingredients (APIs).
• Agrochemical Synthesis: Used in the production of pesticides, herbicides, and plant growth regulators.
• Flavor and Fragrance Compounds: Serves as a precursor for aroma chemicals and synthetic flavors.
• Specialty Chemical Manufacturing: Employed in the synthesis of dyes, pigments, and photographic chemicals.
• Polymer Chemistry: Acts as a monomer or cross-linking agent in the production of specialized polymers and resins.
• Organic Synthesis Reagent: A fundamental reagent for Claisen condensations, Knoevenagel condensations, and Michael additions in research and development.

Basic Information

Product Name	Diethyl Diethylmalonate
CAS No.	77-25-8
Molecular Formula	C9H16O4
Molecular Weight	188.22 g/mol
Synonyms	Diethyl Malonate; Malonic Acid Diethyl Ester; Diethyl Propanedioate; Ethyl Malonate; DEM; Diethyl Methanedicarboxylate; Propanedioic Acid Diethyl Ester; Carbethoxymalonic Ester
EINECS	201-011-5

Quality Control

Our Diethyl Diethylmalonate is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing, including GC, IR, and titration methods, to ensure it meets exacting purity and consistency standards. A Certificate of Analysis (COA) detailing all specifications is provided with each shipment to guarantee traceability and compliance for your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from incompatible materials such as strong bases and oxidizing agents. Recommended storage temperature is between 15°C and 25°C.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (GC)	≥ 98.5%
Refractive Index (n20D)	1.413 - 1.415
Density (20°C)	1.055 - 1.065 g/mL
Water Content (KF)	≤ 0.1%

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