Used primarily as a solvent and protecting group reagent in organic synthesis. Its ability to form acetals with carbonyl compounds makes it valuable in safeguarding aldehyde or ketone functionalities during multi-step reactions. It is also employed in the preparation of specialty chemicals where mild reaction conditions are required. Due to its relatively low toxicity and good solvency, it finds use in some pharmaceutical and fine chemical processes. Additionally, it can act as a fuel additive to improve combustion efficiency and reduce deposits in certain engine systems.