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HS Code Lookup for Heading 2930

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Heading 2930

Organic chemicals - Organo-sulphur compounds.

List of Sub Headings & Description

293010 2-(N,N-Dimethylamino) ethanethiol

293020 Thiocarbamates and dithiocarbamates

293030 Thiuram mono-, di- or tetrasulphides

293040 Methionine

293060 2-(N,N-Diethylamino)ethanethiol

293070 Bis(2-hydroxyethyl)sulfide (thiodiglycol (INN))

293080 Aldicarb (ISO), captafol (ISO) and methamidophos (ISO)

293090 Other

WCO Notes for Heading 2930

Sub-Chapter X

ORGANO-INORGANIC COMPOUNDS, HETEROCYCLIC COMPOUNDS, NUCLEIC ACIDS AND THEIR SALTS, AND SULPHONAMIDES

GENERAL

The organo-inorganic compounds covered by headings 29.30 and 29.31 are organic compounds whose molecules contain, in addition to atoms of hydrogen, oxygen or nitrogen, those of metals or other non-metals (such as sulphur, arsenic, lead, iron, etc.) directly linked to carbon.

Heading 29.30 (organo-sulphur compounds) and heading 29.31 (other organo-inorganic compounds) do not include sulphonated or halogenated derivatives (including compound derivatives) which, apart from hydrogen, oxygen and nitrogen, only have directly linked to carbon the atoms of sulphur or of halogens which give them their nature of sulphonated or halogenated derivatives (or compound derivatives).

Headings 29.32 to 29.34 cover heterocyclic compounds.

The term "heterocyclic" refers to organic compounds composed of one or more rings, and which contain in the ring(s), in addition to the carbon atoms, atoms of other elements such as oxygen, nitrogen or sulphur. In this way, the following heterocyclic groups are derived :

(A) FIVE-MEMBERED RINGS

(1) Containing one hetero-atom :

(a) Of oxygen : Furan group (heading 29.32)*.

(b) Of sulphur : Thiophen group (heading 29.34)*.

(2) Containing two hetero-atoms :

(a) One oxygen, one nitrogen : Oxazole and isoxazole groups (heading 29.34)*.

(b) One sulphur, one nitrogen : Thiazole group (heading 29.34)*.

(3) Containing three or more hetero-atoms :

(a) One oxygen, two nitrogen : Furazan group (heading 29.34)*.

(b) Three nitrogen : Triazole group (heading 29.33)*.

(B) SIX-MEMBERED RINGS

(1) Containing one hetero-atom :

(a) Of oxygen : Pyran group (heading 29.32)*.

(b) Of sulphur : Thiin (Thiapyran) group (heading 29.34)*.

(2) Containing two hetero-atoms :

(a) One oxygen, one nitrogen : Oxazine group (heading 29.34)*.

(b) One sulphur, one nitrogen : Thiazine group (heading 29.34)*.

These result from the condensation of five- or six-membered heterocyclic compounds with other carbocyclic rings.

Examples include the following groups :

(a) Coumarone (heading 29.32)*.

(b) Benzopyran (heading 29.32)*.

(d) Indole (heading 29.33)*.

(e) Quinoline and isoquinoline (heading 29.33)*.

(f) Acridine (heading 29.33)*.

(g) Benzothiophene (Thionaphthene) (heading 29.34)*.

(h) Indazole (heading 29.33)*.

(ij) Benzimidazole (heading 29.33)*.

(k) Phenazine (heading 29.33)*.

(l) Phenoxazine (heading 29.34)*.

(m) Benzoxazole (heading 29.34)*.

(n) Carbazole (heading 29.33)*.

(o) Quinazoline (heading 29.33)*.

(p) Benzothiazole (heading 29.34)*.

For the purposes of headings 29.32 to 29.34, with respect to compounds containing more than one heterocyclic ring, if only one of the heterocyclic rings is specifically named in a subheading within headings 29.32 to 29.34, the compound should be classified in that subheading. However, if two or more of the heterocyclic rings are specifically named at the subheading level, the compound should be classified in the specific subheading that occurs last in numerical order.

* *

29.30 - Organo-sulphur compounds.

2930.10 - 2-(N,N-Dimethylamino) ethanethiol

2930.20 - Thiocarbamates and dithiocarbamates

2930.30 - Thiuram mono-, di- or tetrasulphides

2930.40 - Methionine

2930.60 - 2-(N,N-Diethylamino)ethanethiol

2930.70 - Bis(2-hydroxyethyl)sulfide (thiodiglycol (INN))

2930.80 - Aldicarb (ISO), captafol (ISO) and methamidophos (ISO)

2930.90 - Other

This heading includes organo-sulphur compounds whose molecules have sulphur atom(s) directly linked to carbon atom(s) (see Note 6 to this Chapter). It includes compounds whose molecules contain, in addition to sulphur atom(s), other non-metal or metal atom(s) directly linked to carbon atom(s).

(A) DITHIOCARBONATES (XANTHATES)*

These are diesters or salts of monoesters of dithiocarbonic acid and correspond to the general formula (ROC(S)SR¹) in which R is an organic radical and R¹ is a metal (sodium, potassium, etc.) or an organic radical.

(1) Sodium ethyldithiocarbonate (ethylxanthate)*. Amorphous; used to prepare synthetic indigo, and in the flotation of ores.

(2) Potassium ethyldithiocarbonate (ethylxanthate). Oily, yellowish crystals; used as a flotation agent for lead and zinc ores, and as an antiparasitic and anticryptogamic agent.

(3) Methyl-, butyl-, pentyl- and benzyldithiocarbonates (xanthates).

(B) THIOCARBAMATES, DITHIOCARBAMATES AND THIURAM SULPHIDES

(1) Thiocarbamates include the salts and esters of thiocarbamic acid (H₂NCOSH or H₂NCSOH) (which does not exist in the free state), whether or not hydrogen atoms of the NH₂group are substituted with alkyl or aryl groups.

(2) Dithiocarbamates* include the salts and esters of dithiocarbamic acid, whether or not hydrogen atoms of the NH₂group are substituted with alkyl or aryl groups. The metal salts of substituted dithiocarbamic acids (e.g., zinc dibutyldithiocarbamate) are used as vulcanisation accelerators in the rubber industry.

(3) Thiuram mono-, di- or tetrasulphides. The alkyl substituted derivatives (e.g., tetraethylthiuram disulphide) are used as vulcanisation accelerators.

These may be regarded as ethers in which the oxygen atom is replaced by one of sulphur

(ROR¹) _{.......................................................................................} (RSR¹)

ether sulphide

(1) Methionine*. White platelets or powder. An amino acid. Essential component in human nutrition, not synthesised by the body.

(2) Dimethyl sulphide, diphenyl sulphide. Colourless liquids with a very disagreeable odour.

(3) Bis(2-hydroxyethyl)sulfide or thiodiglycol (INN); a liquid used as a solvent for dyes in textile printing.

(4) Thioaniline or 4,4’-diaminodiphenyl sulphide.

(D) THIOAMIDES*

(1) Thiourea (H₂NCSNH₂) is the diamide of thiocarbonic acid and is thus the sulphur analogue of urea. Lustrous, white crystals. Used in photography, as an auxiliary in dyeing, and for preparing intermediate compounds in the dyestuff and pharmaceutical industries.

(2) Thiocarbanilide (diphenylthiourea)*. Colourless, crystalline tablets or amorphous white powder. Used for preparing intermediate compounds in the dyestuffs industry (sulphur dyes, indigo) and synthetic pharmaceutical products; also as an accelerator in the vulcanisation of rubber, and for the flotation of ores.

(3) Di-o-tolylthiourea. White powder, insoluble in water; used as an accelerator in the vulcanisation of rubber.

(E) THIOLS (MERCAPTANS)

These sulphur compounds correspond to alcohols or phenols in which the oxygen atoms have been replaced by sulphur atoms.

(ROH) _{........................................................................................} (RSH)

alcohol or phenol mercaptan

(1) Thioalcohols, like alcohols, may be primary, secondary or tertiary, containing the groups (–CH₂SH), (CHSH) or (CSH), respectively.

They are generally colourless or yellowish liquids with a disagreeable odour.

(a) Methanethiol (methyl mercaptan).

(b) Ethanethiol (ethyl mercaptan).

(d) Pentanethiol (pentyl mercaptan).

(2) Thiophenols.

(a) Thiophenol (C₆H₅SH)

(b) o-Mercaptobenzoic acid, sometimes described as thiosalicylic acid.

(F) THIOALDEHYDES

General formula (RCSH).

(G) THIOKETONES

General formula (RCSR¹).

(H) THIOACIDS

General formula (RCOSH or RCSOH and also RCSSH).

An example is dithiosalicylic acid (HOC₆H₄CSSH), but this name is often applied to the compound di(o-carboxyphenyl) disulphide.

(IJ) SULPHINIC ACIDS, SULPHOXIDES AND SULPHONES

These have the general formulae (RSO₂H), (RSOR¹) and (RSO₂R¹), respectively.

An example is sulphonal, colourless crystals, used in medicine.

(K) ISOTHIOCYANATES

General formula (RN=CS).

They may be regarded as the “esters” of isothiocyanic acid. They include ethyl isothiocyanate; phenyl isothiocyanate; allyl isothiocyanate (or artificial mustard oil).

FAQs

What is HS code 2930?

HS code 2930 includes Organic chemicals - Organo-sulphur compounds..

How many sub-headings are there in HS code 2930?

There are 8 sub-heading(s) in HS code 2930.

What is an HS Code and Why Does it Hold For Cross-Border Trade?

HS code is a standardized six-digit numerical classification system developed by the World Customs Organization (WCO) and acts as a universal language for simplifying the process of identifying and classifying traded products. They ensure consistent customs clearance, enable accurate duty calculation, and help identify relevant trade regulations. This simplifies the process for businesses, saving time, reducing risk, and promoting informed decision-making.

What are Controls and Why should Businesses Focus on Them?

In global trade, controls refer to a set of regulations and policies implemented by governments to manage the import and export of goods and services. These controls can take various forms, including tariffs, quotas, embargoes, export controls, and licensing requirements. Companies should prioritize understanding and adhering to them for compliance, reduced risk of legal issues, mitigating reputational damage, staying competitive, and building trust with governments.

What are Tariffs in Global Trade and Why should Businesses Focus on Them?

In global trade, tariffs are a type of tax levied by a government on imported goods. They act as a financial barrier to entry, increasing the overall cost of the imported product for domestic consumers and businesses. By understanding how tariffs work and their potential impact, companies can make informed decisions about pricing, sourcing, and market expansion, ultimately ensuring their competitiveness in the global marketplace.

What are FTAs in Global Trade and Why should Businesses Focus on Them?

In global trade, Free Trade Agreements (FTAs) are legally binding agreements between two or more countries aimed at reducing or eliminating barriers to trade between them. By understanding the terms of relevant FTAs and strategically incorporating them into their business plans, companies can enjoy reduced costs, expanded market access, and a more competitive edge in international trade.