Division 3 Subject to the provisions of note 1 to Section VI, this chapter does not cover:

sodium chloride or magnesium oxide, whether or not pure, or other products of Section V;

organo-inorganic compounds other than those mentioned in note 2;

products mentioned in note 2, 3, 4 or 5 to Chapter 31;

inorganic products of a kind used as luminophores, of heading No 3206;

artificial graphite (heading No 3801); products put up as charges for fire-extinguishers or put up in fire-extinguishing grenades, of heading No 3813; ink removers put up in packings for retail sale, of heading No 3823; cultured crystals (other than optical elements) weighing not less than 2,5 g each, of the halides of the alkali or alkaline-earth metals, of heading No 3823;

precious or semi-precious stones (natural, synthetic or reconstructed) or dust or powder of such stones (heading Nos 7102 to 7105), or precious metals or precious metal alloys of Chapter 71;

the metals, whether or not pure, or metal alloys of Section XV; or

optical elements, for example, of the halides of the alkali or alkaline-earth metals (heading No 9001).