etikkahappoanhydridiltä

Etikkahappoanhydridiltä is a Finnish term that translates to "from acetic anhydride." Acetic anhydride is an organic compound with the formula (CH₃CO)₂O. It is a colorless liquid that has a pungent odor. It is an important reagent in organic synthesis, particularly for acetylation reactions.

Acetic anhydride is produced industrially primarily by the carbonylation of methyl acetate or by the ketene process, where acetic acid is dehydrated to ketene, which then reacts with more acetic acid. Its main uses include the production of cellulose acetate, which is used in photographic film, textiles, and cigarette filters. It is also used in the synthesis of aspirin (acetylsalicylic acid) and other pharmaceuticals, as well as in the production of dyes and perfumes.

In terms of safety, acetic anhydride is corrosive and can cause severe burns to the skin and eyes. It is also flammable and can react vigorously with water, producing acetic acid. Appropriate personal protective equipment, such as gloves and eye protection, should be used when handling this chemical.