Section 06 Products of the chemical or allied 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 Commodity Code Description 28 42 10 - Double or complex silicates, including aluminosilicates whether or not chemically defined. 28 42 90 - Other