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