Section 06 PRODUCTS OF THE CHEMICAL OR ALLIED INDUSTRIES 28 Inorganic chemicals; organic or inorganic compounds of precious metals , of rare 28 48 Phosphides, whether or not chemically defined, excluding ferrophosphorus. 28 48 00 28 48 00 00 Commodity Code Description 28 48 00 00 00 Phosphides, whether or not chemically defined, excluding ferrophosphorus.