Methanedisulphonic acid is widely used in organic synthesis as a strong acid catalyst. Its high acidity makes it effective in facilitating various chemical reactions, including esterification, alkylation, and polymerization processes. In the pharmaceutical industry, it serves as a reagent for the synthesis of active pharmaceutical ingredients (APIs) due to its ability to promote specific transformations with high efficiency. Additionally, it is employed in the production of specialty chemicals, where its robust acidic properties are utilized to drive complex reactions. In electroplating, methanedisulphonic acid is used as an additive to improve the quality and durability of metal coatings. Its versatility and strong acidic nature make it a valuable component in industrial and chemical manufacturing processes.