Section 06 Products of the chemical or allied industries 28 Inorganic chemicals; organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or isotopes 28 42 Other salts of inorganic acids or peroxoacids (including aluminosilicates whether or not chemically defined), other than azides. 28 42 90 Other Commodity Code Description 28 42 90 00 Other