Sodium Methoxide

Commercially it is available in both solid and liquid forms to suit different industrial processes and handling preferences but it is supplied mainly as solid sodium methoxide powder or pellets (typically 95–99% purity) and sometimes as a solution in methanol, most commonly at 25%, 30%, and 32% concentrations. The compound consists of sodium ions and methoxide anions (NaOCH₃) and is highly moisture-sensitive, reacting rapidly with water and carbon dioxide. Its primary applications include biodiesel manufacturing as a transesterification catalyst, pharmaceutical API synthesis, agrochemical intermediates, dyes and pigments, specialty polymers, and fine chemical production. Sodium methoxide is also used in Claisen condensations, epoxide ring-opening reactions, and methylation processes, where high reactivity and controlled alkalinity are required. Due to its strong basic nature, it must be handled under controlled, dry conditions with appropriate safety measures.