Used as a water scavenger and protecting group reagent in organic synthesis, particularly in the formation of acetals and ketals. It helps stabilize sensitive functional groups during multi-step reactions. Commonly applied in pharmaceutical manufacturing to protect aldehyde or ketone groups. Also used in the production of agrochemicals, dyes, and fragrances due to its ability to drive condensation reactions efficiently. Acts as a methylating agent in certain reactions, offering advantages over more hazardous reagents. Its low toxicity and ease of handling make it preferred in industrial-scale processes.