HS 283529 Other
Quick Answer: HS 2835.29, "Other," encompasses a diverse range of inorganic polyphosphates not specifically classified elsewhere within subheading 2835.2. This includes various complex phosphate salts used in industries such as detergents, water treatment, food additives, and flame retardants. Importers and exporters should note the varying duty rates across major jurisdictions. For example, the UK applies a 4.00% ad valorem duty, while the EU typically levies 5.30% to 5.50%. The US rates show significant variation, ranging from Free to 25% ad valorem, often dependent on specific product composition and country of origin, highlighting the importance of precise classification and origin determination to avoid unexpected costs.
What Are the Import Duty Rates?
🇬🇧 United Kingdom
| Code | MFN | Preferential | Unit |
|---|---|---|---|
| 2835291000 | 4.00 % | — | — |
| 2835299000 | 4.00 % | — | — |
| 2835290000 | — | — | — |
| 2835293000 | 4.00 % | — | — |
🇪🇺 European Union (TARIC)
| Code | MFN | Preferential | Unit |
|---|---|---|---|
| 2835290000 | — | — | — |
| 2835291000 | 5.30 % | — | — |
| 2835293000 | 5.50 % | — | — |
| 2835299000 | 5.50 % | — | — |
🇺🇸 United States (HTSUS)
| Code | MFN | Preferential | Unit |
|---|---|---|---|
| 2835291000 | Free | — | ["kg"] |
| 283529 | — | — | — |
| 2835295100 | 4.1% | Free (17 programs) | ["kg"] |
| 2835292000 | 1.5% | Free (17 programs) | ["kg"] |
| 2835293000 | 2.2% | 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 2835.29?
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?
How to Classify This HS Code?
What products does HS 283529 cover?
This subheading covers all phosphates, other than those of disodium, trisodium, or potassium, and excluding polyphosphates. Specifically, it encompasses a broad range of inorganic phosphate salts not elsewhere specified within subheading 2835.2. This includes, but is not limited to, calcium phosphates, ammonium phosphates, and various other metallic phosphates, provided they are not complex polyphosphates or the specific sodium or potassium phosphates enumerated in other subheadings under Heading 2835. The WCO Harmonized System Explanatory Notes for Heading 2835 confirm this residual classification for "other" phosphates, ensuring comprehensive coverage within the chapter for these essential chemical compounds as defined by the USITC Harmonized Tariff Schedule and EU TARIC.
What falls outside HS 283529?
The following products are excluded from HS 283529: disodium phosphate (HS 2835.22.00), trisodium phosphate (HS 2835.23.00), and potassium phosphates (HS 2835.24.00), which are specifically provided for in their respective subheadings due to their distinct chemical compositions and common industrial uses. Furthermore, polyphosphates, whether chemically defined or not, are classified under HS 2835.39.00 ("Other polyphosphates"). For instance, sodium tripolyphosphate, a common detergent builder, would fall under 2835.39.00, not 2835.29.00. Phosphides, which are compounds of phosphorus with a more electropositive element, are also excluded, as they are classified under HS 2848.00.00, representing a different chemical family entirely.
What are common classification mistakes for HS 283529?
A common error is misclassifying specific sodium or potassium phosphates, such as disodium phosphate or tripotassium phosphate, under HS 283529 instead of their precise subheadings (e.g., 2835.22.00 or 2835.24.00, respectively). This often occurs when importers or brokers overlook the specific enumerations within Heading 2835. Another frequent mistake involves classifying complex polyphosphates, such as sodium hexametaphosphate, under 283529, when they correctly belong to HS 2835.39.00. Adherence to General Rule of Interpretation (GRI) 1, which states that classification shall be determined according to the terms of the headings and any relative section or chapter notes, is crucial. Importers must carefully verify the exact chemical name and structure against the WCO Explanatory Notes to avoid these errors.
How should importers classify products under HS 283529?
The correct procedure for classifying products under HS 283529 involves a systematic approach. First, importers and customs brokers must precisely identify the chemical name and composition of the phosphate salt. Second, they should consult Heading 2835 and its subheadings to determine if the product is specifically enumerated elsewhere, such as disodium, trisodium, or potassium phosphates, or if it is a polyphosphate. If the phosphate is not specifically named and is not a polyphosphate, then HS 283529 is the appropriate residual classification. Always cross-reference with the USITC Harmonized Tariff Schedule or EU TARIC database, and review the WCO Explanatory Notes for Heading 2835 to confirm the classification, ensuring compliance and accurate duty assessment based on the 3.5% ad valorem rate for imports into the United States.
Which HS Codes Are Related?
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FAQ
What is the import duty rate for products classified under HS 2835.29 ('Other' Phosphates) in key markets, and are there any significant variations?
The Most Favored Nation (MFN) duty rates for HS 2835.29 can vary by importing country. For example, the United States applies an MFN duty rate of 4.00% ad valorem (USITC HTSUS 2835.29.00.00). The European Union (EU TARIC) generally applies an MFN duty rate of 5.50% ad valorem. The United Kingdom Trade Tariff also lists an MFN duty rate of 5.50% ad valorem. Some countries may apply higher rates, such as 25% or even 'Free' depending on specific national schedules or trade agreements. Importers should always verify the exact duty rate applicable to their specific destination country using the official tariff database of that country.
What are the primary classification criteria for distinguishing products under HS 2835.29 ('Other' Phosphates) from other phosphate subheadings?
HS 2835.29 is a residual subheading for 'Other' phosphates, meaning it covers phosphates not specifically enumerated in other subheadings of heading 2835. Heading 2835 itself covers 'Phosphinates, phosphonates, phosphates and polyphosphates, whether or not chemically defined.' Subheading 2835.21 specifically covers 'Monosodium phosphate and disodium phosphate,' and 2835.22 covers 'Of potassium.' Subheading 2835.24 covers 'Of calcium.' Therefore, products classified under 2835.29 typically include phosphates of other metals (e.g., magnesium phosphate, aluminum phosphate) or complex phosphates not specifically named elsewhere, provided they are not polyphosphates (which fall under 2835.3X). The chemical composition and specific cation (e.g., sodium, potassium, calcium) are critical determinants for classification within this heading, as per the Harmonized System Explanatory Notes (WCO).
Which common trade agreements might offer preferential duty rates for goods classified under HS 2835.29, and how can importers claim them?
Preferential duty rates for HS 2835.29 are available under various free trade agreements (FTAs) to which importing countries are signatories. For instance, imports into the United States from FTA partners like Mexico or Canada (under USMCA/NAFTA successor) could be 'Free' if originating criteria are met. Similarly, imports into the EU from countries with preferential agreements (e.g., GSP beneficiaries, CETA, EU-Japan EPA) might also benefit from reduced or 'Free' duties. To claim preferential rates, importers must ensure the goods meet the specific Rules of Origin outlined in the respective trade agreement. This typically involves obtaining a Certificate of Origin or a declaration of origin from the exporter, which must be presented to customs authorities at the time of import. Failure to provide proper origin documentation will result in the application of the MFN duty rate.
What specific documentation is generally required by customs authorities for the import of 'Other' phosphates under HS 2835.29?
Standard import documentation for HS 2835.29 includes a commercial invoice, packing list, and bill of lading or air waybill. Depending on the country and specific product, additional documentation may be required. For chemical products, a Safety Data Sheet (SDS) is often requested to ensure compliance with chemical regulations and for hazard assessment. If claiming preferential duty rates under a free trade agreement, a Certificate of Origin or a valid origin declaration is mandatory. Furthermore, some countries may require import licenses or specific permits for certain chemical substances, especially if they are dual-use, precursors, or subject to specific environmental or health regulations. Importers should consult the national customs regulations and relevant chemical control agencies of the importing country.