2931 90 000 1 — Other organo-inorganic compounds: other: organosilicon compounds

2931 Other organo-inorganic compounds: 2931 10 – tetramethyl lead and tetraethyl lead 2931 20 – tributyltin compounds – other organo-phosphorous derivatives: 2931 31 – – dimethyl methylphosphonate 2931 32 – – dimethyl propylphosphonate 2931 33 – – diethyl ethylphosphonate 2931 34 – – sodium 3-(trihydroxysilyl) propyl methylphosphonate 2931 35 – – 2,4,6-tripropyl-1,3,5,2,4,6-trioxatriphosphinane 2,4,6- trioxide 2931 36 – – (5-ethyl-2-methyl-2-oxido-1,3,2- dioxaphosphinan-5- yl)methyl methyl methylphosphonate 2931 37 – – bis[(5-ethyl-2-methyl-2-oxido- 1,3,2-dioxaphosphinan-5- yl)methyl] methylphosphonate 2931 38 – – salt of methylphosphonic acid and (aminoiminomethyl)urea (1 : 1) 2931 39 – – other 2931 90 – other

This heading covers (1) Tetramethyl lead (Pb(CH3)4) and tetraethyl lead (Pb(C2H5)4). Volatile liquids in their pure form are colorless, whereas technical products are yellow; toxic; very effective as anti-detonators. (2) Tributyltin compound. (3) Organophosphate compounds. They are organic compounds containing at least one phosphorus atom directly bound to a carbon atom. This category includes:

82 (a) dimethylmethylphosphonate*, dimethylpropylphosphonate and diethylethylethylphosphonate; (b) 3-(trihydroxysilyl)propylmethylphosphonate sodium; (c) 2,4,6-tripropyl-1,3,5,2,4,6-trioxatriphosphine 2,4,6-trioxide; (d)methylphosphonic acid salt and (aminoiminemethyl)urea (1 :1); (e)ofophysophonylophyl (f)ophythrophosophonylsophonylophosophonyl (ophylatoronesophonyl) (4) Organosilicon compounds. They are separate compounds of a specific chemical composition in which a silicon atom is directly bonded to at least one carbon atom of an organic radical. These compounds include organic silanes and siloxanes; in some cases these compounds are polymerized to form organosilicon compounds. Silanes include chlorosilanes (e.g., dimethyldichlorosilane), alkoxysilanes (e.g., methyltrimethoxysilane), alkyl-or arylsilanes (e.g., diphenylsilandiol, tetramethylsilane) and other silanes containing different functional groups (amino-, nitryl-, oxyranyl-, oxymo-, acetoxy-, etc.). Siloxanes include hexamethyldisiloxane, octamethyltrisiloxane, octamethylcyclotretrasiloxane, decamethylcyclopentasiloxane and dodecamethylcyclohexasiloxane. This heading also includes hexamethyldisilazane and organodisilanes. This heading does not cover inorganic silicon compounds which are essentially of Chapter 28 (for example, silicon tetrachloride (SiCl 4) to heading 2812 or trichlorosylane (SiHCl 3) to heading 2853). The esters of silicic acid and its salts are classified in heading 2920. Specially prepared mixtures of individual organosilicon compounds of a certain chemical composition are dealt with elsewhere in the Nomenclature, principally in heading 3824. This heading does not include compounds of undetermined chemical composition containing in a molecule more than one silicon-oxygen-silicon bond and containing organic groups bound to silicon atoms by direct silicon-carbon bonds. They are silicones of heading 3910. (5) Iron carbonyl, nickel carbonyl, etc. (6) Organoarsenic compounds: (a) methylarsonic acid (CH3·AsO(OH)2) and its salts. Crystallizes as flakes and forms crystalline salts, such as sodium methylarsonate (colorless, used in medicine); (b) codilic acid and its salts. These compounds contain a radical (-As(CH3)2) known as cocodyl. It's used in medicine. Cacodilic acid exists as crystals without color or smell. Its main salt is sodium cacodilate, a white crystalline powder; (c) p-aminophenylarsonic acid (NH2·C6H4·AsO(OH)2) and its salts. Crystallizes, forming shiny white needle crystals. The main salt of this acid - p-aminophenylarsonate sodium is a white crystalline pore odorless, used in medicine, in particular, against sleeping sickness; (d) aminohydroxyphenylarsonic acids, their formyl - and acetyl derivatives and their salts; (e) arsenobenzene (C6H5·As=As·C6H5) and its derivatives - these are compounds similar to azo compounds, but containing an arseno group (-As=As-) instead of an azo group (-N=N-). (7) o-iodozoobenzoic acid. (8) Metal alkyls, metal fullerenes and metallocenes.

83 This heading excludes organo-sulphur compounds, the molecules of which have a sulphur atom or atoms directly linked to a carbon atom or atoms (see Note 6 to this Chapter). It also excludes compounds the molecules of which contain, in addition to the sulphur atom or atoms directly linked to a carbon atom or atoms, an atom or atoms of another non-metal or of a metal directly linked to a carbon atom or atoms (e.g., fonofos (ISO)) (heading 2930). This heading further excludes organo-mercury compounds, which may contain one or more mercury atoms, in particular a (–Hg.X) group, in which X represents the residue of an inorganic or organic acid (heading 2852).

Notes

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 in the context, the headings of this chapter include only:

(a) individual organic compounds of a particular chemical composition, whether or not containing impurities;

(b) mixtures of two or more isomers of the same organic compound (containing or not containing impurities), except for mixtures of isomers of acyclic hydrocarbons (but not stereoisomers), saturated or unsaturated (Chapter 27);

(c) products of headings 2936 to 2939 or simple esters of sugars, acetals of sugars, esters of sugars and their salts, of heading 2940, or products of heading 2941, whether chemically defined or indefinite;

(d) products referred to in points (a), (b) or (c) above dissolved in water;

(e) products referred to in points (a), (b) or (c) above dissolved in other solvents, provided that dissolution is the usual and necessary method used solely for the preservation or transportation of these products, and that the solvent does not render the product suitable for a specific application other than conventional use;

(f) products referred to in points (a), (b), (c), (d) or (e) above, with the addition of a stabilizing substance (including an anti-traceability agent) necessary for their preservation or transport;

(g) products referred to in points (a), (b), (c), (d), (e) or (f) above, with the addition of an anti-dust agent or a coloring or fragrant substance or emetic to facilitate their identification or for safety purposes, provided that these additives do not make the product suitable for a specific use other than traditional use;

(h) the following products diluted to a standard concentration for the production of azo dyes: diazonium salts, substances reacting with these salts, diazotizing amines and their salts.

2. This group does not include:

(a) the goods of heading 1504 or of raw glycerol of heading 1520;

(b) ethyl alcohol (heading 2207 or 2208);

(c) methane or propane (heading 2711);

(d) the carbon compounds referred to in Note 2 to Chapter 28;

(e) immunological products of heading 3002;

(f) urea (heading 3102 or 3105);

(g) dyes of vegetable or animal origin (heading 3203), synthetic organic dyes, synthetic organic products used as optical bleaches or phosphors (heading 3204), or dyes or other dyes packaged in molds or packages for retail sale (heading 3212);

(h) enzymes (heading 3507);

(ij) metaldehyde, hexamethylenetetramine or similar substances, packaged in moulds (e.g. tablets, sticks or similar forms) intended for use as fuel, or liquid or liquefied gaseous fuel in containers of not more than 300 cm in capacity, used for filling or refilling cigarette or similar lighters (heading 3606);

(k) products supplied as fire extinguishing charges or grenades for extinguishing fires of heading 3813; ink stain removal preparations packaged for retail sale of heading 3824; or

(l) optical elements, for example of ethylenediamintartrate (heading 9001).

3. Goods which may be included in two or more headings of this Chapter are classified in the heading, the latter in ascending order of the codes in this Chapter of the Nomenclature.

4. For the purposes of headings 2904 to 2906, 2908 to 2911 and 2913 to 2920, any reference to halogenated, sulfonated, nitrated or nitrosed derivatives also applies to mixed derivatives such as sulfohalogenated, nitrohalogenated, nitrosulfonated or nitrosulfohalogenated derivatives.

For the purposes of heading 2929, nitrogen or nitrozo groups are not regarded as nitrogen-containing functional groups.

For the purposes of headings 2911, 2912, 2914, 2918 and 2922, the term “oxygen-containing functional group” means that the characteristic organic oxygen-containing groups of these headings are limited to the oxygen-containing functional groups referred to in headings 2905 to 2920.

5. (A) Esters of organic compounds with acidic functional groups of subgroups I to VII with organic compounds of the same subgroups shall be included with that of them which falls in the heading last in ascending order of codes in these subgroups of the Nomenclature.

(B) Ethyl alcohol esters with organic compounds with acid functional groups of subgroups I to VII are to be classified in the same headings as the corresponding organic compounds with acid functional groups.

(C) Subject to note 1 to section VI and note 2 to chapter 28:

(1) Inorganic salts of organic compounds, such as compounds with acidic, phenolic or enolic functional groups, or organic bases of subgroups I to X or heading 2942, are to be classified in the headings for organic compounds;

(2) salts resulting from chemical reactions between organic compounds of subgroups I to X or heading 2942 are to be classified in the heading for the base or acid (including compounds with phenolic or enolic functional groups) from which these salts are formed, the latter in ascending order of the codes in the group; and

(3) Coordinating or complex compounds, other than substances of sub-group XI or heading 2941, are classified in the heading last in ascending order of the codes of Chapter 29, among those suitable for fragments formed by the "splitting" of all metal bonds other than metal-carbon bonds.

(D) Metal alcohols are to be classified in the same heading as the alcohols concerned, with the exception of ethanol (heading 2905).

(E) Carboxylic acid halides are to be classified in the same heading as the corresponding acids.

6. The compounds of headings 2930 and 2931 are organic compounds whose molecules, in addition to hydrogen, oxygen or nitrogen atoms, contain atoms of other nonmetals or metals (such as sulfur, arsenic or lead) directly bound to carbon atoms.

Headings 2930 (organic sulphur compounds) and 2931 (other organo-inorganic compounds) do not include sulfonated or halogenated derivatives (including complex derivatives) which, in addition to hydrogen, oxygen and nitrogen, have only directly carbon-related sulphur or halogen atoms giving them the properties of sulfonated or halogenated derivatives (or complex derivatives).

7. Headings 2932 to 2934 do not include three-membered ring epoxides, ketone peroxides, cyclic polymers of aldehydes or thioaldehydes, anhydrides of polybasic carboxylic acids, cyclic esters of polyalcohols or phenols with polybasic acids or imides of polybasic acids.

These provisions are applicable only if heteroatom cycles are formed only as a result of the cyclization reaction or as a result of the reactions mentioned above.

8. In heading 2937:

(a) the term “hormones” covers release hormones or factors that stimulate hormone secretion, hormone inhibitors and hormone antagonists (antihormones);

(b) the term “mainly used as hormones” applies not only to hormone derivatives and their structural analogues used principally for hormonal action, but also to such derivatives and structural analogues as are used principally as intermediates in the synthesis of substances of this heading.

Subheading 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. Within any one heading of this chapter, derivatives of a chemical compound (or group of chemical compounds) are to be classified in the same subheading as that compound (or group of compounds), provided that they are not more specifically covered by any other subheading and that there is no residual subheading named ‘Other’ in the series of subheadings concerned.

2. Note 3 to Chapter 29 does not apply to the subheadings of this chapter.

Additional notes of the Eurasian Economic Union

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. Subheading 2901 10 000 1 covers ethane, butane and isobutane in the form of separate isomers of a purity of 95% or more. This percentage of compounds is calculated respectively by volume for gaseous products or by weight for liquefied products. Ethane, butane and isobutane having a lower degree of purity fall in heading 2711.

2. Subheading 2901 10 000 2 covers pentane and isopentane as separate isomers of a purity of 95 % or more by weight.