2840 19 — Disodium tetraborate "refined borax" (excl. anhydrous)

2840 Borates; peroxoborates (perborates): - tetraborate disodium (purified drill): 2840 11 - - anhydrous 2840 19 - - - other 2840 20 - borates other 2840 30 - peroxoborates (perborates)

(A) BORATES Subject to the exceptions specified in the general provisions of this sub-heading, this heading covers borates, salts of metals and various boric acids principally of normal or orthoboric acid (H3BO3) (heading 2810). This heading covers borates obtained by crystallization or chemical synthesis and natural borates obtained by the evaporation of complex brines from certain salt lakes. (1) Sodium borates. The most important is the tetraborate (dynatrium tetraborate, purified borax) (Na 2B4O7). It is obtained by crystallization of solutions of natural borates or processing of natural borates of calcium or boric acid with sodium carbonate. Waterless

or hydrated (with 5 or 10 molecules of water). When heated and then cooled, it forms a vitreous mass (fused borax, glass of borax, granulated borax). Used for stiffening canvas or paper; for soldering metals (flux for brazing); as a flux for enamels; in the manufacture of vitrifiable colours, special glass (optical glass, electric-lamp glass), glues or polishes; for refining gold and for the preparation of borates and anthraquinone dyes. There are other sodium borates (metaborates, hydrogendiborate, or hydrodiborate) used for laboratory purposes. (2) Ammonium borates. The most important is the metaborate (NH4BO2·2H2O). Colourless crystals, very soluble in water, which effloresce. On heating it decomposes, forming a fusible varnish of boric anhydride; it is used as a fireproofing material. It is also used as a fixative in hair lotions; as a component of electrolytes in electrolytic capacitors and for coating paper. (3) Precipitated calcium borates. Obtained by treating natural borates with calcium chloride; a white powder used in fire-retarding compositions, in antifreezes and in ceramic insulators. It may also be used as an antiseptic. (4) Manganese borates. Mainly the tetraborate (MnB4O7), a pinkish powder, moderately soluble. Used as a drier for paints or varnishes. (5) Nickel borate. Pale green crystals. Used as a catalyst. (6) Copper borate. Blue crystals, very hard, insoluble in water. Used as a pigment (ceramic colours) and as an antiseptic and insecticide. (7) Lead borate. A greyish powder, insoluble in water. Used for the preparation of driers, in the manufacture of glass, as a pigment for porcelain and in electroplating. (8) Other borates. Cadmium borate is used as a coating for fluorescent tubes. Cobalt borate is used as a drier; zinc borate is used as an antiseptic, for fireproofing textile materials or as a flux in ceramics; zirconium borate is used as an opacifier. Natural sodium borates (kernite, tincal), used for the preparation of the borates of this heading, and natural calcium borates (pandermite, priceite), used for the preparation of boric acid, are excluded (heading 2528). (B) PEROXOBORATES (PERBORATES) Subject to the exclusions mentioned in the General Explanatory Note to this sub-Chapter, this heading covers metal peroxoborates, which are more highly oxygenated than borates and readily release oxygen. They are complex products whose formulae correspond to several acids, such as HBO3 or HBO4. The principal peroxoborates include: (1) Sodium peroxoborate (perborax). Obtained by the action of sodium peroxide on an aqueous solution of boric acid or by treating an aqueous solution of sodium borate with hydrogen peroxide. A white amorphous powder or crystals (with 1 or 4 molecules of water). Used for bleaching canvas, textile and straw articles, for preserving hides, in the manufacture of household washing preparations, detergents and antiseptics.

(2) Magnesium peroxoborate. White powder, it doesn't dissolve in water. It is used in medicine or in the production of toothpastes. (3) Potassium peroxoborate. The properties and applications are the same as that of sodium peroxoborate. (4) Other peroxoborates. Ammonium, aluminum, calcium, or zinc peroxoborates are white powders. They are used in medicine and in the production of toothpastes.

Notes

English text as published in Annex I to Regulation (EU) 2021/1832 (Combined Nomenclature). The EAEU tariff and the EU nomenclature copy these notes from the same convention. For a Russian declaration the binding version is the Russian one: Annex to Decision No 80 of the EEC Council of 14 September 2021.

1. Except where the context otherwise requires, the headings of this chapter apply only to:

(a) separate chemical elements and separate chemically defined compounds, whether or not containing impurities;

(b) the products mentioned in (a) above dissolved in water;

(c) the products mentioned in (a) above dissolved in other solvents provided that the solution constitutes a normal and necessary method of putting up these products adopted solely for reasons of safety or for transport and that the solvent does not render the product particularly suitable for specific use rather than for general use;

(d) the products mentioned in (a), (b) or (c) above with an added stabiliser (including an anti-caking agent) necessary for their preservation or transport;

(e) the products mentioned in (a), (b), (c) or (d) above with an added anti-dusting agent or a colouring substance added to facilitate their identification or for safety reasons, provided that the additions do not render the product particularly suitable for specific use rather than for general use.

2. In addition to dithionites and sulphoxylates, stabilised with organic substances (heading 2831), carbonates and peroxocarbonates of inorganic bases (heading 2836), cyanides, cyanide oxides and complex cyanides of inorganic bases (heading 2837), fulminates, cyanates and thiocyanates, of inorganic bases (heading 2842), organic products included in headings 2843 to 2846 and 2852 and carbides (heading 2849), only the following compounds of carbon are to be classified in this chapter:

(a) oxides of carbon, hydrogen cyanide and fulminic, isocyanic, thiocyanic and other simple or complex cyanogen acids (heading 2811);

(b) halide oxides of carbon (heading 2812);

(c) carbon disulphide (heading 2813);

(d) thiocarbonates, selenocarbonates, tellurocarbonates, selenocyanates, tellurocyanates, tetrathiocyanatodiamminochromates (reineckates) and other complex cyanates, of inorganic bases (heading 2842);

(e) hydrogen peroxide, solidified with urea (heading 2847), carbon oxysulphide, thiocarbonyl halides, cyanogen, cyanogen halides and cyanamide and its metal derivatives (heading 2853) other than calcium cyanamide, whether or not pure (Chapter 31).

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

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

(b) organo-inorganic compounds other than those mentioned in note 2 above;

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

(d) inorganic products of a kind used as luminophores, of heading 3206; glass frit and other glass in the form of powder, granules or flakes, of heading 3207;

(e) artificial graphite (heading 3801); products put up as charges for fire-extinguishers or put up in fire-extinguishing grenades, of heading 3813; ink removers put up in packings for retail sale, of heading 3824; 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 3824;

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

(g) the metals, whether or not pure, metal alloys or cermets, including sintered metal carbides (metal carbides sintered with a metal), of Section XV; or

(h) optical elements, for example, of the halides of the alkali or alkaline-earth metals (heading 9001).

4. Chemically defined complex acids consisting of a non-metal acid of sub-chapter II and a metal acid of sub-chapter IV are to be classified in heading 2811.

5. Headings 2826 to 2842 apply only to metal or ammonium salts or peroxysalts. Except where the context otherwise requires, double or complex salts are to be classified in heading 2842.

6. Heading 2844 applies only to:

(a) technetium (atomic No 43), promethium (atomic No 61), polonium (atomic No 84) and all elements with an atomic number greater than 84;

(b) natural or artificial radioactive isotopes (including those of the precious metals or of the base metals of Sections XIV and XV), whether or not mixed together;

(c) compounds, inorganic or organic, of these elements or isotopes, whether or not chemically defined, whether or not mixed together;

(d) alloys, dispersions (including cermets), ceramic products and mixtures containing these elements or isotopes or inorganic or organic compounds thereof and having a specific radioactivity exceeding 74 Bq/g (0,002 μCi/g);

(e) spent (irradiated) fuel elements (cartridges) of nuclear reactors;

(f) radioactive residues whether or not usable. The term ‘isotopes’, for the purposes of this note and of the wording of headings 2844 and 2845, refers to: — individual nuclides, excluding, however, those existing in nature in the monoisotopic state, — mixtures of isotopes of one and the same element, enriched in one or several of the said isotopes, that is, elements of which the natural isotopic composition has been artificially modified.

7. Heading 2853 includes copper phosphide (phosphor copper) containing more than 15 % by weight of phosphorus.

8. Chemical elements (for example, silicon and selenium) doped for use in electronics are to be classified in this chapter, provided that they are in forms unworked as drawn, or in the form of cylinders or rods. When cut in the form of discs, wafers or similar forms, they fall in heading 3818.

Subheading note

Machine translation. The original is the Russian text of the EAEU tariff, and customs goes by it; this translation is for understanding only and has no legal force.

1. В субпозиции 2852 10 термин «определенного химического состава» означает все органические или неорганические соединения ртути, удовлетворяющие требованиям примечаний 1 (а) – 1 (д) к группе 28 и примечаний 1 (а) – 1 (з) к группе 29.

Additional note

Machine translation. The original is the Russian text of the EAEU tariff, and customs goes by it; this translation is for understanding only and has no legal force.

1. Unless otherwise specified, the salts referred to in the subheadings include acid salts and basic salts.