Unless regulations have been relaxed (yeah, right!) it is illegal to sell 100% pure nitromethane. It must be cut with at least 5% alcohol to make it safer to handle. It can be purchased up to at least 50% alcohol, so know what you are buying! If someone tells you he is selling you 100%, have him check it with a hygrometer (to measure specific gravity). A friend used to buy a drum of 50%, add oil only, and wind up with 35% nitro glow fuel. JIM