It's a rocket fuel; banned by NHRA about, oh, 1968 or so. Very, very volatile liquid - it will burst into flames if spilled on rust. Unbelievable horspower builder, and wild motor exploder when too much used.
The sole source of this material, at that time, was my bowels after Thanksgiving.
Be forewarned. My wife has a 22-pounder, with sausage stuffing, ready to go.