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 31 Sodium triphosphate (sodium tripolyphosphates) Commodity Code Description 28 35 31 00 Sodium triphosphate (sodium tripolyphosphates) 28 35 31 10 Food grade 28 35 31 90 Other