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 35 Phosphinates, phosphonates, phosphates and polyphosphates 28 35 22 Of mono- or disodium 28 35 22 00 Of mono- or disodium Commodity Code Description 28 35 22 00 000 Of mono- or disodium