The MAP market: why a 52% granule and a 44% granule are different businesses

Monoammonium phosphate is the highest-analysis solid phosphate in normal trade, and it is also the phosphate most often mis-specified. Buyers ask for “MAP” and receive a grade that is chemically the right substance and commercially the wrong product, because MAP is not one grade — it is a family, and the family spans two rather different businesses.

The grades that actually trade

The international standard is 11-52-0: 11% nitrogen, 52% available P2O5, granulated to a nominal 2–4 mm for blending and direct application. It is the grade quoted in the assessments and the one most buyers mean when they say MAP.

China adds two grades that are specific to its own blending market: 10-50-0 and 11-44-0. Both are genuine export products. Both are cheaper per tonne. And both exist for a reason that has nothing to do with quality: a blend plant buying phosphate to top up a compound that already receives P2O5 from elsewhere is buying nutrient units, not grade names, and it will take the cheaper unit every time.

Then there is 12-61-0, which shares the chemical name and nothing else that matters. That is a purified crystal made to dissolve completely for fertigation. It is a different product, with a different price basis and a different customer.

The practical consequence: a quotation that says “MAP” and nothing else is not a quotation. It needs the grade, the form and the granule size before it means anything.

Who buys, and where the reference comes from

MAP demand is concentrated in two places.

Blend plants are the larger volume. A blender wants a granule that matches its urea and potash in size and density, stores without caking, and does not react with urea. That combination is why MAP rather than DAP is the phosphate of choice wherever the compound contains both nitrogen and phosphate.

Direct application matters in specific geographies — Brazil’s soybean and sugarcane economy, parts of Australia, Southeast Asia and Latin America — where a high-phosphate starter is applied at planting.

Brazil is the reference market. It is the largest single importer of granular MAP, and its buying is seasonal and concentrated, which means that when Brazilian demand appears it sets a level that other destinations then negotiate against. India does the same job for DAP. That asymmetry is worth remembering: the two products are related, but they have different price-setting centres.

The pricing logic

MAP’s cost structure is acid plus ammonia plus granulation plus freight. Three implications follow.

It tracks acid and sulphur. Because the phosphate is the dominant nutrient by value, MAP is more sensitive to phosphoric acid cost than to nitrogen cost. A rising sulphur price reaches MAP through acid before it reaches urea at all.

It carries only partial ammonia exposure. At 11% nitrogen, MAP’s ammonia content is lower than DAP’s 18%. When nitrogen is the rising input, MAP’s cost advantage over DAP widens; when nitrogen falls, the gap narrows.

Freight matters more than it looks. At 52% P2O5, MAP is the most concentrated solid phosphate, so the freight per nutrient unit is the lowest of the granular products. On a long ocean leg into a distant market, that advantage is worth more than a small difference in the FOB price — which is exactly why Chinese 11-52-0 competes in Brazil and Australia while Chinese 11-44-0 stays closer to home.

What to watch on the buy side

Granule size and strength. A granule that is nominally 2–4 mm but arrives with 15% fines is a granule that will segregate in a blend and dust in a spreader. Size distribution and crushing strength belong on the COA and in the contract.

Water-soluble fraction. MAP typically runs 87–90% of its available P2O5 as water-soluble. The exact figure varies by plant and lot, and for a buyer whose crop needs immediate availability it is worth specifying.

Storage behaviour. MAP does not absorb moisture the way DAP does, and it does not lose ammonia when blended with urea. In a humid climate or a long storage period, those two properties are the reason to pay for MAP rather than take the cheaper DAP.

The grade you were actually offered. This is the one that catches people. A price that looks 8% below the market is usually a different grade, not a bargain.

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Grades and structural relationships described here are stable. Prices are not, and none is quoted. Ask the export desk for the position on a specific cargo.