Dear Dr. H,
Can you tell me some of the things acetic anhydride can be used for apart from making heroin and making aspirin? Thanks.
Wondering Down Under
According to the ultimate authority on such issues--Uncle Fester, in his classic book Secrets of Methamphetamine Manufacture, "Acetic Anhydride... [is] commonly used in the chemical industry, especially for making dyes."
I hope that you are asking for this information because you are writing about heroin or such. Possession of Acetic Anhydride is tantamount to possession of heroin. No matter what you do, however, be careful and don't be stupid.