Product classification
HS code for Monocalcium phosphate: 2835.26
Phosphates, of calcium n.e.c. in item no. 2835.25, whether or not chemically defined.
Classification of monocalcium phosphate under HS 2835.26
Monocalcium phosphate (MCP) is classified under HS code 2835.26, which specifically covers phosphates of calcium other than dicalcium phosphate. This classification is determined by the chemical composition of the substance, which is an inorganic compound consisting of calcium and phosphate ions. Under the General Interpretative Rules (GIR) 1 and 6, the product is placed in Chapter 28, which encompasses inorganic chemicals and precious metals. Heading 2835 is dedicated to phosphinates, phosphonates, and phosphates. Within this heading, subheadings are differentiated by the specific cation involved. While dicalcium phosphate has its own dedicated subheading (2835.25), monocalcium phosphate falls into the residual category for calcium phosphates. The classification remains consistent regardless of whether the product is intended for use as a food additive, a leavening agent in the baking industry, or a mineral supplement in animal feed, provided it meets the criteria for a chemically defined compound.
- Covers
- Monocalcium phosphate anhydrous
- Monocalcium phosphate monohydrate
- Feed-grade monocalcium phosphate
- Food-grade MCP (acidulant)
- Granular monocalcium phosphate for fertilizers (if chemically pure)
- Also under 2835.26
- Nutri-Phos (feed grade)
- Phos-Feed (fertilizer)
- ICL (calcium phosphates)
- Innophos (food additives)
Codes often confused with 2835.26
Common mistake. Monocalcium phosphate is frequently confused with dicalcium phosphate, which is classified under HS code 2835.25. The distinction is based on the calcium-to-phosphorus ratio. Additionally, if the product is prepared as a finished fertilizer or mixed with other fertilizing elements, it may be misclassified under Chapter 31, specifically heading 3103. However, pure MCP remains in 2835.26. Another common error involves confusing it with calcium polyphosphates, which fall under 2835.39.
Top exporters and importers of HS 283526 (the code used for monocalcium phosphate), 2025
In 2025, the largest exporter of HS 283526 (the code used for monocalcium phosphate) in UN Comtrade data was China, with 25% of world exports; the largest importer in UN Comtrade data was the United States, with 9.6% of world imports. The United Kingdom reports $2.7B of its chapter 28 imports without product detail (confidential), so it may also belong among the top importers.
Figures cover everything classified under HS 283526, not only monocalcium phosphate.
Top exporters 2025 · share of world exports
- 1 China $397M 25% of world exports
- 2 Russia* ~$181M 11% of world exports · partner records ↗
- 3 Morocco $168M 10% of world exports
World total: $1.6B Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 United States $156M 9.6% of world imports
- 2 Germany $107M 6.6% of world imports
- 3 France $63M 3.9% of world imports
The United Kingdom reports $2.7B of its chapter 28 imports without product detail (confidential), so it may also belong among the top importers.
World total: $1.6B 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 marked * did not, so their figures add up what other countries recorded trading with them, and their exports are valued at buyers' CIF prices. 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 monocalcium phosphate
Brazil classifies monocalcium phosphate under NCM 2835.26.00: HS 2835.26 with 00 added.
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text on each NCM page is the official one.
Questions about monocalcium phosphate
What is the HS code for Monocalcium phosphate?
The HS code for Monocalcium phosphate is 283526 (Phosphates; of calcium n.e.c. in item no. 2835.25, whether or not chemically defined). The primary HS code for Monocalcium phosphate is 2835.26, covering calcium phosphates not elsewhere specified.
How do I classify Monocalcium phosphate for customs?
Monocalcium phosphate is classified under HS code 283526 — Phosphates; of calcium n.e.c. in item no. 2835.25, whether or not chemically defined. This is a 6-digit subheading level code.
Is food-grade MCP classified differently than feed-grade?
No, both food-grade and feed-grade monocalcium phosphate are classified under 2835.26, as the classification is based on chemical identity rather than end-use application, provided the purity levels align with Chapter 28 requirements.
Which countries are the top exporters of monocalcium phosphate (HS 283526)?
In 2025, the top exporters of HS 283526 (the code used for monocalcium phosphate) in UN Comtrade data were China ($397M, 25% of world exports), Russia (about $181M) and Morocco ($168M). World exports came to about $1.6B, 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 monocalcium phosphate (HS 283526)?
In 2025, the top importers of HS 283526 (the code used for monocalcium phosphate) in UN Comtrade data were the United States ($156M, 9.6% of world imports), Germany ($107M) and France ($63M). World imports came to about $1.6B, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). The United Kingdom reports $2.7B of its chapter 28 imports without product detail (confidential), so it may also belong among the top importers.
Is the HS code for Monocalcium phosphate the same in all countries?
The base HS code 283526 for Monocalcium 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 monocalcium phosphate in Brazil?
In Brazil, monocalcium phosphate (HS 283526) is classified under NCM 2835.26.00.