Harmonized System

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Section VI > Chapter 28 > Heading 2804

Explanatory notes

… - - Argon 2804.29 - - Other 2804.30 - Nitrogen 2804.40 - Oxygen 2804.50 - Boron; tellurium               - Silicon : …

Section VI > Chapter 28 > Heading 2827

Explanatory notes

… this heading covers chlorides, chloride oxides (oxychlorides), chloride hydroxides (hydroxychlorides), bromides, bromide oxides (oxybromides), iodides and iodide oxides (oxyiodides) of metals or of the ammonium ion (NH 4 + ). …

Section VI > Chapter 28 > Heading 2814

Explanatory notes

… OF METAL GENERAL Bases are compounds characterised by a hydroxyl radical (OH) and which react with acids to form … at the cathode. Metal oxides are compounds of a metal with oxygen. Many can combine with one or more molecules of water …

Section VI > Chapter 28 > Heading 2812

Explanatory notes

… such as : (1) A halogen with a non‑metal other than oxygen or hydrogen (halogen compounds ). (2) The same compounds as under (1) above, combined with oxygen ( halide oxides ). or (3) Sulphur with a non‑metal … ‑ ‑ Carbonyl dichloride (phosgene) 2812.12 ‑ ‑ Phosphorus oxychloride 2812.13 ‑ ‑ Phosphorus trichloride 2812.14 ‑ ‑ …

Section VII > Chapter 39

Section VI > Chapter 29 > Heading 2905

Explanatory notes

… obtained by replacing one or more atoms of hydrogen by the hydroxyl group. They are oxygenated compounds which react with acids giving the …