It is Methyl Ethyl Ketone, also known as MEK. It is extremely flamable and the fumes are extremely dangerous it is a killer without proper ventalation and precautions. The only way to ship is by truck or rail for 5 gallon cans, as a pipe cement or primer it can be shipped UPS but is diluted. I used it as a cleaner and thinner when painting steel with Epoxy paints and used an external air supply, it actualy melts the coat of paint your are applying into the previous coat. Im going to try and play with Del's colorants, what I think happens is the MEK melts the colorant or tint into the bait evaporates and the plastic melts itself back together. Normal surgical gloves will disolve in it, we used real rubber gloves for protection from the stuff.