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