i think its an aromatic hydrocarbon, based on benzene ring, used in paints as a diluent so yes check out thinners etc at the paint shop, or places where they sell napalm i think thats got naptha in it. i hope you are not a (i daren't even say the word) it ends in ist, are you sure you dont mean napthalene crystals which are used in moth balls and those blocks you get in toilets and urinals, the yellow things, they are the same stuff as both balls, paradichlorobenzene, and keepmoths and bugs away from stuff.