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 35 Phosphinates, phosphonates, phosphates and polyphosphates 28 35 39 Polyphosphates, nes Commodity Code Description 28 35 39 00 Polyphosphates, nes 28 35 39 10 Tetrasodium pyrophosphate 28 35 39 90 Other
