HS 293030 Thiuram mono-, di- or tetrasulphides
Quick Answer: HS code 293030 covers thiuram mono-, di-, or tetrasulphides, which are organic sulfur compounds primarily used as vulcanization accelerators in rubber manufacturing, fungicides, and pesticides. Importers and exporters should note the varying duty rates across major jurisdictions. The UK and EU apply a 0.00% ad valorem duty rate. In contrast, the US tariff schedule for this heading includes a range of rates: "Free" for certain subheadings, 25% for products of China under Section 301 tariffs, and 3.7% ad valorem for other specific entries. Importers should verify the exact subheading and country of origin to determine the applicable US duty rate, especially considering potential Section 301 tariffs.
What Are the Import Duty Rates?
🇬🇧 United Kingdom
| Code | MFN | Preferential | Unit |
|---|---|---|---|
| 2930300000 | 0.00 % | — | — |
🇪🇺 European Union (TARIC)
| Code | MFN | Preferential | Unit |
|---|---|---|---|
| 2930300000 | 0.00 % | — | — |
🇺🇸 United States (HTSUS)
| Code | MFN | Preferential | Unit |
|---|---|---|---|
| 2930303000 | Free | — | ["kg"] |
| 293030 | — | — | — |
| 2930306000 | 3.7% | Free (18 programs) | ["kg"] |
Special rates available under trade agreements including USMCA, KORUS, GSP.
Duty rates sourced from the USITC (US International Trade Commission) Harmonized Tariff Schedule (HTS) (accessed 2/22/2026), EU TARIC – DG TAXUD (Directorate-General for Taxation and Customs Union) (accessed 2/22/2026), and UK Trade Tariff – HMRC (His Majesty's Revenue and Customs) (accessed 2/22/2026).
Data compiled and presented by HSRates.
Which Trade Agreements Reduce Duties for HS 2930.30?
Imports of Thiuram mono-, di- or tetrasulphides may qualify for reduced or zero duty rates under free trade agreements and preferential programs. The overview below shows available preferential arrangements by jurisdiction, compiled by HSRates from official tariff and trade agreement data.
United States (HTSUS)
Free for USMCA, KORUS, GSP, and 15 other programs
European Union (TARIC)
Preferential rate data not yet available.
United Kingdom
Preferential rate data not yet available.
Preferential rates require proof of origin and may be subject to quotas or conditions. Always verify eligibility with a licensed customs broker.
Data compiled by HSRates.
Which Preferential Rates Apply to Your Origin Country?
Select an origin country to see if preferential rates apply.
Preferential rates based on available trade agreements. Actual rates may vary.
How Has Trade Volume Developed?
Trade Volume 2023
How to Classify This HS Code?
What products does HS 293030 cover?
This subheading covers thiuram mono-, di-, or tetrasulphides, which are organic compounds characterized by a sulfur atom bonded to two carbon atoms, where at least one of the carbon atoms is part of a thiocarbamoyl group. These compounds are primarily used as vulcanization accelerators in the rubber industry, fungicides, or as intermediates in the synthesis of other organic chemicals. The WCO Harmonized System Explanatory Notes for Heading 2930 specifically include these compounds, and official tariff schedules such as the USITC Harmonized Tariff Schedule of the United States (HTSUS) and the EU TARIC system align with this definition, ensuring consistent global classification for these specific chemical structures.
What falls outside HS 293030?
The following products are excluded from HS 293030: other organo-sulphur compounds that do not possess the specific thiuram mono-, di-, or tetrasulphide structure. For instance, dithiocarbamates, while structurally related and also used as vulcanization accelerators or fungicides, are classified under HS 2930.20. Similarly, mercaptans (thiols) and their derivatives, which are also organo-sulphur compounds, fall under HS 2930.90. Polymers incorporating thiuram structures, if they meet the criteria for plastics, would be classified in Chapter 39, not Chapter 29, as Chapter 29 is reserved for separate chemically defined organic compounds.
What are common classification mistakes for HS 293030?
A common error is misclassifying other organo-sulphur compounds with similar applications but different chemical structures under HS 293030. For example, dithiocarbamates are frequently confused with thiuram sulphides due to their shared use as rubber accelerators, leading to incorrect classification under HS 293030 instead of HS 2930.20. This mistake often arises from insufficient attention to the precise chemical definition of "thiuram mono-, di- or tetrasulphides" as specified in the WCO HS nomenclature, rather than relying solely on end-use. Adherence to General Interpretative Rule (GRI) 1, which dictates classification by the terms of the headings and any relative section or chapter notes, is crucial to avoid such errors.
How should importers classify products under HS 293030?
The correct procedure for classifying products under HS 293030 involves a thorough review of the product's chemical composition and structure. Importers and customs brokers should obtain a detailed chemical analysis or safety data sheet (SDS) from the manufacturer, confirming the presence of a thiuram mono-, di-, or tetrasulphide structure. This documentation is essential to verify that the product precisely matches the chemical definition provided in the WCO Harmonized System Explanatory Notes for Heading 2930. Consulting official tariff resources like the USITC HTSUS or EU TARIC, and potentially seeking a binding ruling from the relevant customs authority, will further ensure accurate and compliant classification, minimizing potential delays or penalties.
Which HS Codes Are Related?
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FAQ
What are the Most Favored Nation (MFN) duty rates for HS 2930.30 (Thiuram mono-, di- or tetrasulphides) in key markets?
The MFN (Most Favored Nation) duty rates for HS 2930.30 vary by importing country. For example, the United States generally applies a 'Free' rate (0.00% ad valorem) under the Harmonized Tariff Schedule of the United States (HTSUS) for goods from MFN countries. The European Union's TARIC database also indicates a 0.00% ad valorem duty rate for imports from most MFN countries. However, other countries may apply different rates, such as 3.7% or even 25% ad valorem, depending on their national tariff schedules. Importers should always consult the specific tariff schedule of the importing country (e.g., USITC HTSUS, EU TARIC, UK Trade Tariff) for the most current and accurate MFN duty rate applicable to their specific origin.
Are there any preferential duty rates available for Thiuram mono-, di- or tetrasulphides under common trade agreements?
Yes, preferential duty rates are often available for HS 2930.30 under various free trade agreements (FTAs) or generalized system of preferences (GSP) schemes, provided the goods meet the respective rules of origin. For instance, under agreements like the USMCA (United States-Mexico-Canada Agreement), goods originating from Mexico or Canada would typically enter the U.S. duty-free (0.00%). Similarly, the EU has numerous FTAs (e.g., with Japan, South Korea, Canada) that could grant 0.00% duty rates. Importers should verify if their product qualifies under a specific trade agreement (e.g., NAFTA/USMCA, EU-Japan EPA, GSP) and ensure they possess the necessary certificates of origin (e.g., EUR.1, Form A, USMCA Certificate of Origin) to claim preferential treatment.
What are the key classification criteria for Thiuram mono-, di- or tetrasulphides under HS 2930.30?
HS 2930.30 specifically covers 'Thiuram mono-, di- or tetrasulphides.' The primary classification criterion is the chemical structure of the compound, confirming it falls within the definition of a thiuram sulphide. This heading is part of Chapter 29, which covers 'Organic chemicals,' and more specifically, subheading 2930, which encompasses 'Organo-sulphur compounds.' Customs authorities will examine the chemical name and structure to ensure it precisely matches the description. Analytical reports, safety data sheets (SDS), and chemical composition breakdowns are crucial documents to substantiate classification. Importers should ensure their product's chemical name (e.g., Tetramethylthiuram disulfide, TMTD) clearly identifies it as a thiuram mono-, di- or tetrasulphide.
What specific documentation is typically required for importing Thiuram mono-, di- or tetrasulphides (HS 2930.30)?
Standard import documentation for HS 2930.30 includes a commercial invoice, packing list, and bill of lading or air waybill. Due to the chemical nature of these products, additional documentation is often critical. This may include a Safety Data Sheet (SDS) or Material Safety Data Sheet (MSDS) to provide information on potential hazards and handling. A Certificate of Analysis (CoA) or product specification sheet confirming the chemical composition and purity is also highly recommended to support accurate HS classification. If claiming preferential duty rates, a valid Certificate of Origin (e.g., EUR.1, Form A, USMCA Certificate) is mandatory. Depending on the country and end-use, permits or licenses from chemical regulatory bodies might also be required, especially if the substance is controlled or has specific environmental or health implications.