HS 283522 Phosphates
Quick Answer: HS Code 283522 specifically covers Phosphates of mono- or disodium. These are inorganic chemical compounds widely used in various industries, including food processing as leavening agents or emulsifiers, water treatment, and detergents. For importers and customs brokers, understanding the duty landscape is crucial. In the UK, the Most Favored Nation (MFN) duty rate is 4.00% ad valorem. The EU applies an MFN rate of 5.50% ad valorem. The United States MFN rate is 6% ad valorem, but significant preferential duty programs exist, allowing for duty-free entry from numerous countries under agreements such as the Generalized System of Preferences (GSP), Free Trade Agreements (FTAs) with nations like Australia, Chile, Korea, and Peru, and other special programs. Always verify specific country-of-origin eligibility for preferential treatment.
What Are the Import Duty Rates?
🇬🇧 United Kingdom
| Code | MFN | Preferential | Unit |
|---|---|---|---|
| 2835220000 | 4.00 % | — | — |
🇪🇺 European Union (TARIC)
| Code | MFN | Preferential | Unit |
|---|---|---|---|
| 2835220000 | 5.50 % | — | — |
🇺🇸 United States (HTSUS)
| Code | MFN | Preferential | Unit |
|---|---|---|---|
| 2835220000 | 1.4% | 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 2835.22?
Imports of Phosphates 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 283522 cover?
This subheading covers disodium hydrogenorthophosphate, also known as disodium phosphate or DSP, which is a sodium salt of phosphoric acid. According to the Harmonized System Nomenclature, specifically Chapter 28, Heading 2835 encompasses phosphinates, phosphonates, phosphates, and polyphosphates, whether or not chemically defined. Subheading 2835.22 specifically isolates disodium hydrogenorthophosphate from other phosphates. This product is commonly used in food additives, water treatment, and as a buffering agent, and its classification here is consistent across the USITC Harmonized Tariff Schedule (HTSUS) and the EU TARIC system, ensuring global uniformity for this specific chemical compound.
What falls outside HS 283522?
The following products are excluded from HS 283522: other sodium phosphates, such as monosodium phosphate (sodium dihydrogenorthophosphate) which is classified under HS 2835.29.10, and trisodium phosphate (trisodium orthophosphate) which is also classified under HS 2835.29.10. Additionally, polyphosphates of sodium, like sodium tripolyphosphate, fall under HS 2835.39.50. Mixtures containing disodium hydrogenorthophosphate, where the disodium hydrogenorthophosphate is not the predominant component or where the mixture has a specific function, might be classified elsewhere, potentially under Chapter 38 if they are prepared for specific uses, or under other headings based on the nature of the mixture and its primary function.
What are common classification mistakes for HS 283522?
A common error is misclassifying other sodium phosphates, such as monosodium phosphate or trisodium phosphate, under HS 283522 instead of their correct subheading, HS 2835.29.10. This often occurs due to a lack of precise chemical identification or an assumption that all "sodium phosphates" belong together. Importers must carefully verify the exact chemical name and composition. Another mistake involves classifying mixtures containing disodium hydrogenorthophosphate under this subheading when the mixture's characteristics dictate a different classification, potentially under Chapter 38 for prepared products. 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 to avoid such errors.
How should importers classify products under HS 283522?
The correct procedure for classifying products under HS 283522 involves several critical steps for importers and customs brokers. First, precisely identify the chemical compound as disodium hydrogenorthophosphate (disodium phosphate). Obtain the chemical's Certificate of Analysis (CoA) or Safety Data Sheet (SDS) to confirm its exact chemical name, CAS number, and purity. Verify that the product is not a mixture or, if it is, that disodium hydrogenorthophosphate is the sole or primary constituent, and that the mixture does not impart a specific function that would lead to classification elsewhere. Consult the WCO Explanatory Notes for Heading 2835 for detailed guidance. Finally, cross-reference with the USITC HTSUS or EU TARIC system to ensure consistency and confirm the specific national duty rates and any applicable trade regulations for HS 2835.22.00.00 (US) or 2835 22 00 (EU).
Which HS Codes Are Related?
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FAQ
What are the standard Most Favored Nation (MFN) import duty rates for HS code 2835.22 (Calcium phosphates) in major markets?
The MFN (Most Favored Nation) import duty rates for HS code 2835.22 vary by importing country. For example, the United States generally applies a 1.4% ad valorem duty rate as per the Harmonized Tariff Schedule of the United States (HTSUS). The European Union's TARIC database indicates a common customs tariff of 6% ad valorem for this subheading. The UK Global Tariff also lists a 6% ad valorem duty. Importers should always verify the current rates with the official customs tariff of the destination country, such as the USITC HTSUS, EU TARIC, or UK Trade Tariff.
Are there any preferential duty rates available for HS 2835.22, and which trade agreements commonly offer them?
Yes, preferential duty rates, including 'Free' (0%) duty, are available for HS 2835.22 under various Free Trade Agreements (FTAs) and special programs, provided the goods meet the respective Rules of Origin. For imports into the United States, 'Free' duty is often available for products originating from countries party to agreements such as the Australia Free Trade Agreement (AU), Bahrain FTA (BH), Chile FTA (CL), Colombia TPA (CO), Israel FTA (IL), Jordan FTA (JO), Korea FTA (KR), Morocco FTA (MA), Oman FTA (OM), Panama TPA (PA), Peru TPA (PE), Singapore FTA (SG), and others. Importers must ensure they have the correct documentation, such as a Certificate of Origin, to claim these preferential rates. Always consult the specific FTA text and customs regulations of the importing country for detailed requirements.
What are the key classification criteria for distinguishing products under HS 2835.22 'Calcium phosphates' from other phosphates?
HS 2835.22 specifically covers 'Calcium phosphates.' The primary classification criterion is the chemical composition: the product must be a salt of phosphoric acid where calcium is the cation. This distinguishes it from other phosphates classified under different subheadings of HS 2835, such as sodium phosphates (2835.23), potassium phosphates (2835.24), or other phosphates (2835.29). Importers and customs brokers should rely on chemical analysis reports or manufacturer's specifications to confirm the exact chemical identity and ensure accurate classification. The WCO Explanatory Notes for Chapter 28 provide further guidance on the scope of these headings.
What specific documentation is typically required by customs authorities when importing goods classified under HS 2835.22?
For imports under HS 2835.22, standard customs documentation is required, including a commercial invoice, packing list, and bill of lading or air waybill. To claim preferential duty rates, a valid Certificate of Origin (e.g., a Free Trade Agreement certificate or EUR.1 movement certificate for certain EU agreements) is essential. Depending on the specific calcium phosphate and its intended use (e.g., food additive, pharmaceutical, fertilizer), additional regulatory documentation might be necessary, such as Safety Data Sheets (SDS), certificates of analysis, or permits from agencies like the FDA (for food/pharma in the US) or REACH registration (for the EU). Importers should confirm all specific requirements with the customs authority and relevant regulatory bodies of the importing country prior to shipment.