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 (hypophosphites), phosphonates (phosphites) and phosphates; polyphosphates, whether or not chemically defined. 28 35 31 Sodium triphosphate (sodium tripolyphosphates) 28 35 31 00 Sodium triphosphate (sodium tripolyphosphates) Commodity Code Description 28 35 31 00 000 Sodium triphosphate (sodium tripolyphosphates)