Overview
Diethyl succinate is an organic compound belonging to the ester family, derived from succinic acid and ethanol. It serves as a fundamental building block in chemical synthesis and finds extensive use across multiple industries. First synthesized in the 19th century, this compound has gained industrial significance due to its favorable solvent properties and mild odor profile. Its balanced polarity makes it particularly valuable as a reaction medium in pharmaceutical manufacturing processes.
Physical and Chemical Properties
As a diester, diethyl succinate exhibits typical ester characteristics including limited water solubility (2.5 g/L at 20°C) and good organic solvent miscibility. The compound demonstrates excellent thermal stability with a flash point of 96°C. Chemically, it undergoes predictable ester reactions including hydrolysis (under acidic/alkaline conditions), transesterification, and reduction. Its relatively low viscosity (3.1 cP at 20°C) facilitates handling in industrial applications. The ester's mild, fruity odor contributes to its use in fragrance formulations.
Main Applications
In the pharmaceutical sector, diethyl succinate serves as an intermediate for active pharmaceutical ingredients (APIs), particularly barbiturates and vitamin supplements. The flavor/fragrance industry utilizes its ester character in synthetic fruit aromas. Industrial applications include use as a plasticizer for cellulose-based products and as a solvent for resins. Emerging applications include green chemistry initiatives where it functions as a bio-based solvent alternative to traditional petroleum-derived compounds.
Safety and Storage
While classified as generally low hazard, proper handling requires basic precautions including adequate ventilation and avoidance of prolonged skin contact. The material is combustible and should be stored away from strong oxidizers. Recommended storage involves stainless steel or polyethylene containers under nitrogen blanket for extended shelf life. Typical shelf life exceeds two years when stored properly at temperatures below 30°C with minimal moisture exposure.
B2B Procurement Guide
Industrial buyers should prioritize suppliers with ISO 9001 certification and batch-specific Certificates of Analysis. Key specifications to verify include purity (typically 99-99.5%), acid value (<0.1%), and water content (<0.1%). Bulk shipments commonly utilize 200kg steel drums or isotanks. Just-in-time procurement is advisable due to the compound's stable pricing structure. Technical support for application development is a valuable differentiator among suppliers.
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