Product classification
HS code for Monopotassium phosphate: 2835.24
Phosphates, of potassium, whether or not chemically defined.
Classification of monopotassium phosphate under HS 2835.24
Monopotassium phosphate (MKP), with the chemical formula KH2PO4, is classified under HS code 2835.24. This product falls under Chapter 28, which covers inorganic chemicals and precious metal compounds. Heading 2835 is dedicated to phosphinates (hypophosphites), phosphonates (phosphites), and phosphates. Subheading 2835.24 specifically identifies phosphates of potassium. MKP is a soluble salt often used as a fertilizer, a food additive, and a buffering agent. For classification in Chapter 28, the product must be a separate chemically defined compound, as per Note 1 to Chapter 28. This means that technical grade or food grade MKP is typically classified here, provided it has not been mixed with other nutrients or prepared in specific forms for retail sale as a fertilizer.
- Covers
- Anhydrous monopotassium phosphate
- Monopotassium phosphate monohydrate
- Food-grade potassium phosphate (monobasic)
- Technical-grade MKP for industrial buffering
- Crystalline monopotassium phosphate
- Also under 2835.24
- NPK Fertilizers (Scotts, Yara)
- Coffee Creamers (Nestlé Coffee-mate)
- Sports Drinks (Gatorade)
- Food Additive E340
- Water Treatment Chemicals
Codes often confused with 2835.24
Common mistake. The most frequent misclassification of monopotassium phosphate occurs with Chapter 31 (Fertilizers). If MKP is put up in tablets or similar forms, or in packages with a gross weight not exceeding 10 kg, it must be classified under 3105.60 as a mineral or chemical fertilizer containing phosphates and potash. Furthermore, it is often confused with dipotassium phosphate (also 2835.24) or tripotassium phosphate (2835.24). While all potassium phosphates share the same 6-digit code in many tariffs, some national sub-levels distinguish between them. It should also not be confused with sodium phosphates (2835.22).
Top exporters and importers of HS 283524 (the code used for monopotassium phosphate), 2025
In 2025, the largest exporter of HS 283524 (the code used for monopotassium phosphate) in UN Comtrade data was China, with 49% of world exports; the largest importer in UN Comtrade data was Mexico, with 10% of world imports. Countries that did not report 2025 data are estimated from partner records, which can understate them.
Figures cover everything classified under HS 283524, not only monopotassium phosphate.
Top exporters 2025 · share of world exports
- 1 China $311M 49% of world exports
- 2 Israel $165M 26% of world exports
- 3 Germany $53M 8.3% of world exports
World total: $634M Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 Mexico $57M 10% of world imports
- 2 United States $47M 8.2% of world imports
- 3 Spain $38M 6.7% of world imports
World total: $569M Reported figures on UN Comtrade ↗
How these figures are built
109 countries reported 2025 trade to UN Comtrade in HS 2022, and their own totals are used. Countries that did not report are estimated from what other countries recorded trading with them. Those estimates miss trade with other non-reporting countries, so they can be low, and a non-reporting country can rank higher than shown or be missing from the list. World totals add both and leave out trade between two non-reporting countries. Figures are in current US dollars; reported imports are mostly valued CIF and exports FOB, and exports include re-exports. The UN Comtrade links show the underlying records; they can also list a few reporters left out here (regional groups and older HS editions).
Source: UN Comtrade (United Nations Statistics Division), 2025 annual data.
Brazil NCM code for monopotassium phosphate
Brazil classifies monopotassium phosphate under NCM 2835.24.00: HS 2835.24 with 00 added.
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text on each NCM page is the official one.
Questions about monopotassium phosphate
What is the HS code for Monopotassium phosphate?
The HS code for Monopotassium phosphate is 283524 (Phosphates; of potassium, whether or not chemically defined). The HS code for monopotassium phosphate is 2835.24.
How do I classify Monopotassium phosphate for customs?
Monopotassium phosphate is classified under HS code 283524 — Phosphates; of potassium, whether or not chemically defined. This is a 6-digit subheading level code.
When is monopotassium phosphate classified in Chapter 31?
It is classified in Chapter 31 (specifically 3105.60) if it is packaged for retail sale as a fertilizer in weights of 10kg or less, or if it is mixed with other fertilizing elements like nitrogen.
Which countries are the top exporters of monopotassium phosphate (HS 283524)?
In 2025, the top exporters of HS 283524 (the code used for monopotassium phosphate) in UN Comtrade data were China ($311M, 49% of world exports), Israel ($165M) and Germany ($53M). World exports came to about $634M, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
Which countries are the top importers of monopotassium phosphate (HS 283524)?
In 2025, the top importers of HS 283524 (the code used for monopotassium phosphate) in UN Comtrade data were Mexico ($57M, 10% of world imports), the United States ($47M) and Spain ($38M). World imports came to about $569M, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
Is the HS code for Monopotassium phosphate the same in all countries?
The base HS code 283524 for Monopotassium phosphate is internationally standardized for the first 6 digits across 200+ countries. Individual countries may add additional digits for national tariff lines and specific classifications.
What is the NCM code for monopotassium phosphate in Brazil?
In Brazil, monopotassium phosphate (HS 283524) is classified under NCM 2835.24.00.