Overview
Sodium glyceroxide is a sodium alkoxide derived from glycerol, widely used as a strong base and catalyst in industrial processes. It plays a critical role in biodiesel production, where it facilitates transesterification of triglycerides. The compound is highly reactive with water and requires careful handling. Its synthesis typically involves the reaction of glycerol with sodium metal or sodium hydroxide. Due to its hygroscopic nature, commercial grades are often stabilized or sold as solutions in alcohols like methanol or ethanol.
Physical and Chemical Properties
Sodium glyceroxide appears as a white or off-white solid with a molecular weight of 114.08 g/mol. It is highly soluble in polar solvents such as water and alcohols but reacts exothermically with water, releasing heat and forming sodium hydroxide and glycerol. As a strong base, it participates in reactions like esterification and polymerization. Its hygroscopicity necessitates storage under anhydrous conditions. The compound lacks a defined melting point due to decomposition upon heating.
Main Applications
The primary use of sodium glyceroxide is as a catalyst in biodiesel production, where it accelerates the conversion of vegetable oils or animal fats into fatty acid methyl esters (FAMEs). It is favored for high efficiency and lower environmental impact compared to traditional catalysts. Other applications include organic synthesis (e.g., Williamson ether synthesis) and initiating polymerization reactions. In pharmaceuticals, it serves as an intermediate for specialty chemicals. Its role in green chemistry is expanding due to recyclability in certain processes.
Safety and Storage
Sodium glyceroxide is corrosive and moisture-sensitive, requiring strict safety protocols. Direct contact can cause severe burns to skin and eyes. Always use gloves, goggles, and flame-resistant lab coats when handling. Storage must be in airtight containers under inert gas (nitrogen or argon) to prevent degradation. Avoid exposure to humidity or water. Spills should be neutralized with dry sand or alcohol-resistant foam, never water.
B2B Procurement Guide
Industrial buyers should prioritize suppliers offering certified purity (≥90%) and low moisture content. Bulk purchases (e.g., 25 kg drums) often reduce costs. Verify packaging—sealed bags or drums with desiccants are ideal. Request SDS and batch analysis reports. Consider regional logistics; proximity to biodiesel plants or chemical hubs may lower shipping costs. For long-term contracts, negotiate pricing tied to market fluctuations in sodium or glycerol feedstock.
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