Section 06 PRODUCTS OF THE CHEMICAL OR ALLIED INDUSTRIES 28 Inorganic chemicals; organic or inorganic compounds of precious metals , of rare 28 03 Carbon (carbon blacks and other forms of carbon not elsewhere specified or inclu 28 03 00 28 03 00 00 Commodity Code Description 28 03 00 00 00 Carbon (carbon blacks and other forms of carbon not elsewhere specified or included).