Overview
Diethyl L-Malate is an ester derived from L-malic acid, a naturally occurring organic acid found in fruits. It is commonly used in the food and beverage industry as a flavoring agent due to its pleasant fruity aroma. The compound is also utilized in pharmaceutical synthesis and fragrance formulations. The L-form of this ester is particularly valued in applications requiring chiral specificity. Its synthesis typically involves esterification of L-malic acid with ethanol under controlled conditions. The resulting product is a versatile intermediate with applications across multiple industries.
Physical and Chemical Properties
Diethyl L-Malate is a colorless to pale yellow liquid with a characteristic fruity odor. It has a molecular weight of 190.19 g/mol and a density of approximately 1.14 g/cm³. The compound is soluble in water and most organic solvents, including ethanol and ether. The ester exhibits optical activity due to its chiral center, with the L-form being the biologically active configuration. Its boiling point ranges between 215-217°C, and it is stable under normal storage conditions. The compound's ester groups make it susceptible to hydrolysis under strongly acidic or alkaline conditions.
Main Applications
In the food industry, Diethyl L-Malate serves as a flavor enhancer, particularly in fruit-flavored products and beverages. Its pleasant aroma profile makes it valuable in creating natural-tasting flavor compositions. The pharmaceutical industry utilizes this compound as a chiral building block in drug synthesis. It's also employed in fragrance formulations for personal care products and perfumes. Additionally, it finds use as a solvent and plasticizer in specialized industrial applications.
Safety and Storage
Diethyl L-Malate should be handled with standard chemical safety precautions. While it's not classified as highly hazardous, direct contact with skin or eyes should be avoided. Proper ventilation is recommended when working with the compound in enclosed spaces. For storage, maintain the product in tightly sealed containers at room temperature, away from heat sources and direct sunlight. The shelf life is typically 2-3 years when stored properly. In case of spills, absorb with inert material and dispose of according to local regulations.
B2B Procurement Guide
When sourcing Diethyl L-Malate, verify the CAS number (7554-12-3) to ensure product authenticity. Request certificates of analysis (COA) to confirm purity and optical purity specifications, especially for pharmaceutical applications. Consider suppliers with ISO certification and proper handling facilities. Bulk purchases may offer cost advantages, but verify storage capacity. For international shipments, confirm compliance with transportation regulations. Technical support and consistent quality should be key selection criteria when evaluating suppliers.
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