HS CodesVI · Products of the chemical or allied industries28 · Inorganic chemicals; organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or of isotopes28042804Chapter 28Copy pageHydrogen, rare gases and other non-metalsDescriptionHydrogen, rare gases and other non-metalsSubheadings280410Hydrogen280421Argon280429Other280430Nitrogen280440Oxygen280450Boron; tellurium280461Containing by weight not less than 99,99 % of silicon280469Other280470Phosphorus280480Arsenic280490SeleniumWas this page helpful?YesNoPrevious2803Carbon (carbon blacks and other forms of carbon not elsewhere specified or included)NextAlkali or alkaline-earth metals; rare-earth metals, scandium and yttrium, whether or not intermixed or interalloyed; mercury2805