Snopes classifies this as undetermined. If true, thats a bunch of energy pushing out.
Modern Binary Explosives
If true it is very exciting - think of the possibilities! Not killing folks but for controlled blasts in mining, for a new type of combustion engine? Heck, maybe even a type of rocket fuel?
Personally I think it is a crock - in order to get that sort of pop you would need a thermo nuclear reaction of a matter/antimatter introduction...