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 30 Sulphides; polysulphides 28 30 10 Sodium sulphides 28 30 10 00 Sodium sulphides Commodity Code Description 28 30 10 00 000 Sodium sulphides
