For scientists and engineers in the chemical industry, a thorough understanding of a compound's chemical properties is fundamental to its effective utilization. Methylsuccinic Acid (CAS 498-21-5), also known as 2-Methylbutanedioic acid, is a fascinating organic molecule with a range of properties making it valuable in synthesis and formulation. This article aims to provide a detailed look at its chemical characteristics, assisting procurement and R&D professionals in their evaluation and sourcing efforts.

Methylsuccinic Acid possesses the molecular formula C5H8O4 and a molar mass of approximately 132.11 g/mol. Structurally, it is a dicarboxylic acid, meaning it contains two carboxyl groups (-COOH). It is an isomer of adipic acid and a derivative of succinic acid, with a methyl group attached to the second carbon atom. This chiral center means that methylsuccinic acid can exist as enantiomers, though it is commonly supplied as a racemic mixture.

Physically, Methylsuccinic Acid typically appears as a white solid. Its melting point is generally reported in the range of 110-115°C, though some sources may cite slightly different values such as 117.5°C. It exhibits good solubility in polar solvents like water and alcohol, which facilitates its use in various reaction media and formulations. The presence of two carboxyl groups makes it an acidic compound, capable of forming salts and esters.

The reactivity of Methylsuccinic Acid is largely dictated by its carboxyl functional groups. It readily undergoes esterification reactions with alcohols to form esters, which are important in the fragrance and flavor industries. It can also participate in dehydration reactions and decarboxylation under specific conditions. Its structure makes it a useful intermediate for introducing specific carbon skeletons into larger molecules.

Manufacturers and suppliers often provide detailed specifications for Methylsuccinic Acid, including purity (typically ≥99%), appearance, and confirmation of its CAS number (498-21-5). Buyers seeking to purchase this chemical should always request a Certificate of Analysis (CoA) and a Safety Data Sheet (SDS) to confirm these properties and understand handling requirements. The price of Methylsuccinic Acid from suppliers in China can be competitive, with quotes often available upon inquiry for quantities like 25kg drums.

In essence, grasping the chemical properties of Methylsuccinic Acid – its structure, physical state, solubility, and reactivity – is crucial for chemists and procurement specialists. This knowledge empowers informed decision-making when selecting manufacturers and applying the compound in diverse industrial processes, from synthesizing specialized fragrance components to formulating food additives.