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Sistema armonizado
Section VI
PRODUCTS OF THE CHEMICAL OR ALLIED INDUSTRIES
Chapter 28
Inorganic chemicals; organic or inorganic compounds of precious metals, of rare-earth metals, of radioactive elements or of isotopes
Heading 2804
Hydrogen, rare gases and other non-metals.
2804.10
- Hydrogen
2804.2
- Rare gases :
2804.21
-- Argon
2804.29
-- Other
2804.30
- Nitrogen
2804.40
- Oxygen
2804.50
- Boron; tellurium
2804.6
- Silicon :
2804.61
-- Containing by weight not less than 99.99Â % of silicon
2804.69
-- Other
2804.70
- Phosphorus
2804.80
- Arsenic
2804.90