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 40 Borates; peroxoborates (perborates) 28 40 30 - Peroxoborates (perborates) 28 40 30 00 - Peroxoborates (perborates) Commodity Code Description 28 40 30 00 000 - Peroxoborates (perborates)