Product classification
HS code for Diammonium phosphate: 3105.30
Fertilizers, mineral or chemical, diammonium hydrogenorthophosphate (diammonium phosphate).
Classification of diammonium phosphate under HS 3105.30
Diammonium phosphate (DAP), chemically known as diammonium hydrogenorthophosphate, is classified under HS code 3105.30. This classification is part of Chapter 31, which is dedicated to mineral or chemical fertilizers. DAP is a highly concentrated phosphorus fertilizer that also provides a significant amount of nitrogen, typically with a nutrient composition of 18-46-0. The classification under 3105.30 is specific to this chemical compound when it is presented as a fertilizer or in a manner consistent with agricultural use. The Harmonized System distinguishes between pure chemicals and those intended for soil enrichment. For DAP to be classified here, it must be the primary constituent. If the DAP is mixed with other fertilizing elements like potassium, it would move to other subheadings within 3105, such as 3105.20. The code 3105.30 is essential for international trade as it allows for the monitoring of phosphorus-based fertilizer flows and the application of specific agricultural tariffs.
- Covers
- Granular diammonium phosphate for direct soil application
- Technical grade DAP used in the production of liquid fertilizers
- DAP used as a fire retardant in forest fire suppression chemicals
- DAP used as a yeast nutrient in industrial fermentation processes
- DAP used in the manufacture of matches and paper
- Also under 3105.30
- Mosaic MicroEssentials S15
- OCP DAP
- PhosAgro DAP
- Nutrien DAP
- ICL DAP
Codes often confused with 3105.30
Common mistake. DAP is often misclassified under 3102 (Nitrogenous fertilizers) or 2835 (Phosphates). 3102 is incorrect because DAP contains both nitrogen and phosphorus. 2835 is for pure chemical phosphates; however, the General Rules of Interpretation (GRI) dictate that if a product is a fertilizer, Chapter 31 takes precedence over Chapter 28. Another common error is confusing it with monoammonium phosphate (MAP), which is 3105.40.
Top exporters and importers of HS 310530 (the code used for diammonium phosphate), 2025
In 2025, the largest exporter of HS 310530 (the code used for diammonium phosphate) in UN Comtrade data was Morocco, with 41% of world exports; the largest importer in UN Comtrade data was India, with 39% 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 310530, not only diammonium phosphate.
Top exporters 2025 · share of world exports
- 1 Morocco $6.2B 41% of world exports
- 2 Saudi Arabia $3.7B 24% of world exports
- 3 China $2.5B 17% of world exports
World total: $15.2B Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 India $4.9B 39% of world imports
- 2 Bangladesh* ~$1.8B 14% of world imports · partner records ↗
- 3 Pakistan $462M 3.7% of world imports
World total: $12.6B 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 diammonium phosphate
Brazil classifies diammonium phosphate under NCM 3105.30.00: HS 3105.30 with 00 added.
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text on each NCM page is the official one.
EU Regulatory Requirements
This product falls under the Carbon Border Adjustment Mechanism (CBAM). Importers to the EU must declare embedded carbon emissions and purchase CBAM certificates.
Questions about diammonium phosphate
What is the HS code for Diammonium phosphate?
The HS code for Diammonium phosphate is 310530 (Fertilizers, mineral or chemical; diammonium hydrogenorthophosphate (diammonium phosphate)). The specific HS code for diammonium phosphate is 3105.30.
How do I classify Diammonium phosphate for customs?
Diammonium phosphate is classified under HS code 310530 — Fertilizers, mineral or chemical; diammonium hydrogenorthophosphate (diammonium phosphate). This is a 6-digit subheading level code.
Is industrial grade DAP classified differently?
Generally, no. If the product is diammonium hydrogenorthophosphate, it remains under 3105.30, although very high purity samples for laboratory use might occasionally be scrutinized under 2835.
Which countries are the top exporters of diammonium phosphate (HS 310530)?
In 2025, the top exporters of HS 310530 (the code used for diammonium phosphate) in UN Comtrade data were Morocco ($6.2B, 41% of world exports), Saudi Arabia ($3.7B) and China ($2.5B). World exports came to about $15.2B, 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 diammonium phosphate (HS 310530)?
In 2025, the top importers of HS 310530 (the code used for diammonium phosphate) in UN Comtrade data were India ($4.9B, 39% of world imports), Bangladesh (about $1.8B) and Pakistan ($462M). World imports came to about $12.6B, 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.
Is the HS code for Diammonium phosphate the same in all countries?
The base HS code 310530 for Diammonium 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 diammonium phosphate in Brazil?
In Brazil, diammonium phosphate (HS 310530) is classified under NCM 3105.30.00.