HS 283919 Other
Quick Answer: HS code 2839.19, "Other," falls under Chapter 28, covering inorganic chemicals. Specifically, it encompasses various sodium silicates not elsewhere classified within subheading 2839.1. These are chemical compounds of sodium and silicon dioxide, often used in detergents, adhesives, and as desiccants. Importers and exporters should note the varying duty rates: the UK applies a 0.00% ad valorem duty, while the EU imposes a 5.00% ad valorem rate. For the US, the general most-favored-nation (MFN) duty rate is 3.0% or 1.1% ad valorem, but many preferential trade agreements (e.g., with Australia, Korea, Mexico, Singapore) offer duty-free entry. Always verify the specific product and origin to determine the applicable rate and any potential trade agreement benefits.
What Are the Import Duty Rates?
🇬🇧 United Kingdom
| Code | MFN | Preferential | Unit |
|---|---|---|---|
| 2839190000 | 0.00 % | — | — |
🇪🇺 European Union (TARIC)
| Code | MFN | Preferential | Unit |
|---|---|---|---|
| 2839190000 | 5.00 % | — | — |
🇺🇸 United States (HTSUS)
| Code | MFN | Preferential | Unit |
|---|---|---|---|
| 2839190000 | 1.1% | Free (17 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 2839.19?
Imports of Other 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 14 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 283919 cover?
This subheading covers disodium tetraborate, anhydrous, which is a specific chemical compound falling under Heading 2839 of the Harmonized System. Heading 2839 itself covers "Borates; peroxoborates (perborates)." Subheading 2839.19 specifically captures "Other" forms of disodium tetraborate, distinct from the decahydrate (2839.11) and pentahydrate (2839.11). As per the World Customs Organization (WCO) Harmonized System Nomenclature and confirmed by the USITC Harmonized Tariff Schedule of the United States (HTSUS) and EU TARIC, this includes disodium tetraborate where the water of crystallization has been removed, resulting in an anhydrous form. It is commonly known as anhydrous borax or calcined borax, used in various industrial applications.
What falls outside HS 283919?
The following products are excluded from HS 283919: disodium tetraborate decahydrate (borax decahydrate) and disodium tetraborate pentahydrate (borax pentahydrate), which are specifically classified under HS 2839.11. These hydrated forms, despite being chemically related, are distinct in their water content and are therefore provided for elsewhere in the tariff schedule. Furthermore, other borates, such as sodium metaborate or potassium borates, would fall under different subheadings within Heading 2839 or potentially other headings if they are complex salts or mixtures not specifically provided for. Boric acid, for instance, is classified under HS 2810.00, clearly outside the scope of borates of sodium.
What are common classification mistakes for HS 283919?
A common error is misclassifying hydrated forms of disodium tetraborate, specifically the decahydrate or pentahydrate, under HS 283919. Importers sometimes overlook the critical distinction in water content, which is explicitly provided for in subheading 2839.11. This mistake often arises from a lack of precise chemical identification or an assumption that "other" encompasses all forms not explicitly named. Adherence to General Interpretative Rule (GRI) 1, which states that classification is determined according to the terms of the headings and any relative section or chapter notes, is crucial. If the product is clearly a decahydrate or pentahydrate, it must be classified under 2839.11, not the residual "other" category.
How should importers classify products under HS 283919?
The correct procedure for classifying products under HS 283919 involves first confirming the chemical identity of the product as disodium tetraborate. Importers and customs brokers must then ascertain its hydration state. If the product is anhydrous, meaning it contains no water of crystallization, then HS 283919 is the appropriate classification. This requires reviewing product specifications, safety data sheets (SDS), or certificates of analysis (CoA) to verify the absence of water of crystallization. If the product is found to be a decahydrate or pentahydrate, it must be classified under HS 2839.11. Consulting the WCO Explanatory Notes for Heading 2839 and cross-referencing with the HTSUS or EU TARIC is essential for accurate and compliant classification.
Which HS Codes Are Related?
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FAQ
What is the Most Favored Nation (MFN) import duty rate for HS code 2839.19, and what preferential rates are available?
The Most Favored Nation (MFN) import duty rate for HS code 2839.19, which covers 'Other' sodium silicates, varies significantly by importing country. For example, the United States generally applies a 3.7% ad valorem MFN duty rate according to the Harmonized Tariff Schedule of the United States (HTSUS). However, many preferential trade agreements offer reduced or free duty. For imports into the U.S., goods originating from countries with agreements such as the USMCA (Canada, Mexico), CAFTA-DR (Dominican Republic, Costa Rica, El Salvador, Guatemala, Honduras, Nicaragua), and various Free Trade Agreements (e.g., Australia, Bahrain, Chile, Colombia, Israel, Jordan, Korea, Morocco, Oman, Panama, Peru, Singapore) may qualify for a 'Free' duty rate. Importers should consult the specific country's tariff schedule (e.g., USITC HTSUS, EU TARIC, UK Trade Tariff) and ensure compliance with Rules of Origin to claim preferential treatment.
What are the key classification criteria for products under HS code 2839.19, 'Other' sodium silicates, as opposed to other subheadings within 2839?
HS code 2839.19 specifically covers 'Other' sodium silicates, meaning those not falling under 2839.11 ('Disodium metasilicate'). The primary classification criterion is the chemical composition and specific type of sodium silicate. If the product is not disodium metasilicate, it would default to 2839.19. This includes various forms such as sodium orthosilicate, sodium polysilicates, or other complex sodium silicates, provided they are chemically defined. Importers and customs brokers must ensure that the chemical name, CAS number (if applicable), and molecular formula on commercial invoices and technical data sheets accurately reflect the specific sodium silicate to avoid misclassification. The World Customs Organization's Explanatory Notes for Chapter 28 provide further guidance on the chemical definitions and scope of these headings.
What specific documentation is required to import goods classified under HS 2839.19?
To import goods under HS 2839.19, standard import documentation is required, including a commercial invoice, packing list, and bill of lading or air waybill. Crucially, due to the chemical nature of the product, additional documentation is often necessary: a Certificate of Analysis (CoA) or product specification sheet detailing the chemical composition, purity, and physical properties is highly recommended. For preferential duty claims, a Certificate of Origin (e.g., USMCA Certificate of Origin, FTA Certificate) is mandatory. Depending on the importing country and end-use, a Safety Data Sheet (SDS) may also be required for hazardous materials regulations. Importers should verify specific requirements with the customs authority of the importing country to ensure full compliance.
Are there any common trade agreements or regional blocs that significantly impact the duty rates for HS 2839.19?
Yes, numerous trade agreements and regional blocs significantly impact duty rates for HS 2839.19. For instance, within the European Union (EU), imports from member states are duty-free due to the single market. For imports into the EU from countries with preferential agreements (e.g., GSP, FTAs), reduced or zero duties may apply, as detailed in the EU TARIC database. Similarly, for the United States, agreements like the USMCA, and various bilateral Free Trade Agreements with countries such as Australia, Chile, Korea, and Singapore, provide 'Free' duty rates for qualifying goods. The UK Trade Tariff also reflects similar preferential arrangements post-Brexit. Importers should always check the specific trade agreement's Rules of Origin to ensure their goods qualify for preferential treatment, as failure to meet these rules will result in the application of the MFN duty rate.