28.04Heading
Hydrogen, rare gases and other non-metals
Section VI — Products of the chemical or allied industries
| Code | Description |
|---|---|
| 2804.10 | Hydrogen |
| 2804.21 | Gases, rare; argon |
| 2804.29 | Gases, rare; other than argon |
| 2804.30 | Nitrogen |
| 2804.40 | Oxygen |
| 2804.50 | Boron; tellurium |
| 2804.61 | Silicon; containing by weight not less than 99.99% of silicon |
| 2804.69 | Silicon; containing by weight less than 99.99% of silicon |
| 2804.70 | Phosphorus |
| 2804.80 | Arsenic |
| 2804.90 | Selenium |