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Dimetnyi Melonate

CAS Number: 105‑53‑3

Synonyms:Diethyl malonate; Diethyl propanedioate; Malonic acid diethyl ester; DEM

Chemical Formula:C₇H₁₂O₄

Product Introduction

Diethyl malonate is a colorless, apple-scented liquid diester of malonic acid. It’s a foundational building block in organic synthesis: used in malonic ester synthesis, barbiturate manufacture, flavoring, vitamin synthesis, and fragrance formulations.

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Physical & Chemical Properties

Property	Value
Appearance	Colorless liquid, faint aromatic/apple odor
Density @ 25 °C	~1.055 g/cm³
Melting Point	–50 °C
Boiling Point	199 °C
Flash Point	93 °C
Vapor Pressure @ 25 °C	~1 mmHg
Refractive Index (n₂₀ᴅ)	~1.413–1.414
Solubility	Negligible in water; miscible with common organics
Molecular Weight	160.17 g/mol
Dipole Moment	~2.54 D
LEL/UEL	— (combustible liquid)

Applications

Malonic ester synthesis: Key reagent for alkylations and decarboxylations.
Pharmaceutical intermediates: Used for barbiturates, vitamins B₁/B₆, NSAIDs synthesis.
Flavor & fragrance: Apple-like aroma; used in perfumes and food flavoring.
Academic reagent: Common in labs for classical organic reactions.