aluminum oxide, except artifi
sodium hydroxide (caustic sod
artificial corundum, whether
iron oxides and hydroxides
manganese oxides, except mang
potassium hydroxide (caustic
zinc oxide and zinc peroxide
cobalt oxides and hydroxides;
lead monoxide (litharge, mass
sodium hydroxide (caustic sod
ammonia in aqueous solution
magnesium hydroxide and magne
oxides, hydroxides, and perox
chromium oxides and hydrides,
halides and halide oxides of
sulfides of nonmetals, nesoi;
earth colors containing 70% o