Cerium compounds

Cerium compounds See the HS Explanatory Note to heading 2846 , third paragraph, (1). Other These subheadings include compounds of metals of the rare-earth series, called lanthanides (since lanthanum is its first element), which include the oxides of europium, gadolinium, samarium and terbium (terbite), which are used as neutron-absorbers in the control or safety rods of nuclear reactors and in colour television tubes. See also the HS Explanatory Note to heading 2846 , third paragraph, (2). General The letters ‘(INN)’, after a name appearing in the Combined Nomenclature and the explanatory notes thereto, indicate that the name is included in the list of International Nonproprietary Names for Pharmaceutical Substances published by the World Health Organisation. The letters ‘(INNM)’ indicate that the name is accepted by the World Health Organisation as an ‘International Nonproprietary Name Modified’. The letters ‘(ISO)’ indicate that the name appears as one of the ‘common names for pest control chemicals and plant growth regulators’ in recommendation R 1750 of the International Organisation for Standardisation. A fused system is one in which there are at least two rings which have one, and only one, common bond and have two, and only two, atoms in common. Separate chemically defined organic compounds, presented as a food supplement in capsules (except microcapsules), for example of gelatine, are excluded from this chapter because the presentation in capsules is a treatment that is not covered by note 1 to this chapter. Note 1(a) See the HS General Explanatory Note to this chapter, (A), first four paragraphs. This chapter includes: 1. anthracene of a purity by weight of 90 % or more (subheading 2902 90 00 ); 2. benzene of a purity by weight of 95 % or more (subheading 2902 20 00 ); 3. naphthalene having a crystallising point of 79,4 °C or more (subheading 2902 90 00 ); 4. toluene of a purity by weight of 95 % or more (subheading 2902 30 00 ); 5. xylenes containing by weight 95 % or more of xylene (total isomers) (subheadings 2902 41 00 to 2902 44 00 ); 6. ethane and other saturated acyclic hydrocarbons (other than methane and propane) put up as single isomers of a purity of 95 % or more by reference to volume for gaseous products (1) and to weight for non-gaseous products (subheading 2901 10 00 ); 7. ethylene of a purity by volume of 95 % or more (subheading 2901 21 00 ); 8. propene (propylene) of a purity by volume of 90 % or more (subheading 2901 22 00 ); 9. fatty alcohols of a purity by weight of 90 % or more, as calculated on the anhydrous product, and containing six or more carbon atoms (subheading 2905 16 , 2905 17 00 or 2905 29 90 ); 10. cresols (single or mixed isomers) containing by weight 95 % or more of cresol, all cresol isomers being taken together (subheading 2907 12 00 ); 11. phenol of a purity by weight of 90 % or more (subheading 2907 11 00 ); 12. xylenols (single or mixed isomers) containing by weight 95 % or more of xylenol, all xylenol isomers being taken together (subheading 2907 19 10 ); 13. fatty acids (other than oleic acid) of a purity by weight of 90 % or more, as calculated on the anhydrous product, and containing six or more carbon atoms (headings 2915 and 2916 ); 14. oleic acid of a purity by weight of 85 % or more, as calculated on the anhydrous product (subheading 2916 15 00 ); 15. pyridine of a purity by weight of 95 % or more (subheading 2933 31 00 ); 16. methylpyridine (picoline), 5-ethyl-2-methylpyridine (5-ethyl-2-picoline) and 2-vinylpyridine, of a purity by weight of 90 % or more (subheading 2933 39 ); 17. quinoline of a purity by weight of 95 % or more, calculated on the anhydrous product (as ascertained by gas chromatography) (subheading 2933 49 90 ); 18. 1,2-dihydro-2,2,4-trimethylquinoline of a purity by weight exceeding 85 %, calculated on the anhydrous product (subheading 2933 49 90 ); 19. acridine of a purity by weight of 95 % or more, calculated on the anhydrous product (as ascertained by gas chromatography) (subheading 2933 99 80 ); 20. the derivatives of the fatty acids and of the fatty alcohols of items 9, 13 and 14 above (for example, salts, esters (other than those of glycerine), amines, amides, nitriles), provided that they satisfy the criteria set for the corresponding fatty acids and alcohols. Note 1(b) See the HS General Explanatory Note to this chapter, (A), final paragraph. Note 1(d) The aqueous solutions permitted are only those that are true solutions, even if because of insufficient water the substance is only partly dissolved. Note 1(f) As regards the addition of a stabiliser, anti-dusting agent, colouring agent or odoriferous substances, see the HS General Explanatory Note to this chapter, (A), penultimate paragraph. Note 1(g) As regards the addition of a stabiliser, anti-dusting agent, colouring agent or odoriferous substances, see the HS General Explanatory Note to this chapter, (A), penultimate paragraph. Note 5 The provisions of this note apply only to the classification, as between headings, of the products concerned (see the HS General Explanatory Note to this chapter, (G)). For classification as between the subheadings within a heading, the provisions of subheading note 1 to this chapter are to be applied.