Editorial Article
The Only Product in the Chain That Sells Its Phosphorus for Less Than the Element
The only product in the chain that sells its phosphorus for less than the element
Every market in the phosphate segment adds something to the phosphorus it consumes. Phosphorus trichloride sells a mole of phosphorus for 1.05 times what the element costs. Sodium tripolyphosphate sells it for 1.32. Glyphosate sells it for 5.58. Feed phosphate sells it for 0.70 — less than the yellow phosphorus the whole chain is built on, and less even than thermal acid at 0.88.
| Product | RMB/t product | P content | RMB per tonne of contained P | Index (element = 1.00) |
|---|---|---|---|---|
| Phosphate rock | 1,020 | 13.1% | 7,783.9 | 0.32 |
| Dicalcium phosphate | 3,060 | 18.0% | 17,000 | 0.70 |
| Thermal phosphoric acid | 6,760 | 31.6% | 21,386 | 0.88 |
| Monocalcium phosphate | 4,850 | 22.0% | 22,045.5 | 0.91 |
| Phosphorus trichloride | 5,773 | 22.55% | 25,601 | 1.05 |
| Sodium tripolyphosphate | 8,100 | 25.3% | 32,066 | 1.32 |
| Glyphosate | 24,850 | 18.32% | 135,645 | 5.58 |
A market that subtracts the value of its own feedstock, at seven million tonnes a year, needs an explanation rather than a narrative. It has one, and it is a single calculation.
Why it cannot be made from purified acid
A tonne of dicalcium phosphate contains 0.180 t of phosphorus, which is 0.4125 t of P₂O₅, which is 0.6696 t of 85 per cent phosphoric acid. At the industrial acid price of RMB 7,050, that acid costs RMB 4,720.7.
The reported cash cost of DCP in 2025 was about RMB 2,950 a tonne. The acid bill alone is 1.60 times the entire cash cost of the finished product.
Feed phosphate therefore cannot be made from purified acid — the largest single input would cost more than the product sells for, before a kiln is lit. So it is made from crude wet-process acid, and the purification capacity in this chain goes to food, technical and battery customers instead. Which explains two findings that otherwise look unrelated: the 2.4 times purity premium outside China in thermal acid, and the 44.4 per cent food-grade premium on sodium tripolyphosphate for a specification with identical phosphorus.
Feed phosphate is what the chain does with the acid nobody purifies. That is not a quality judgement about the product. It is a description of its position: the segment’s largest outlet by tonnage is also the one that clears the lowest grade.
The ceiling is a ration, and it is small
On the other side of the price sits a limit that has nothing to do with chemistry. Ten kilograms of DCP in a tonne of finished feed is RMB 30.6 — 1.02 per cent of a RMB 3,000 tonne of feed.
That is the ceiling. A feed mill will not pay meaningfully more for a micronutrient that is one per cent of its cost base, which is why the market sits between a rock-derived floor and a feed-cost ceiling and earns the difference: RMB 130 a tonne on Longzhong’s September assessment, or RMB 208.93 at a 6.76 per cent gross margin on Baiinfo’s April figure.
A product that is one per cent of its customer’s cost and 67 per cent its own supplier’s is a product with no pricing power in either direction. Which is the structural reason this market consolidates around integrated producers — the rock and the acid have to be owned, because the conversion step cannot earn a living on its own.
The mix shift is the forecast
The 2025 base was built from physical counts rather than asserted. A twenty-one company Chinese sample produced 71,600 tonnes a week in September 2025, which annualises to 3.72 Mt. Non-China named capacity at roughly 72 per cent — PhosAgro alone reported 492.0 kt — adds 3.30 Mt. The total is 7.02 Mt, valued at USD 3,937.8 million on China at USD 493.4 a tonne and the rest of the world at USD 637.1.
China holds 52.99 per cent of the tonnage and 46.61 per cent of the value — the mirror image of the thermal acid market, and for the reverse reason. Here the West holds the value because it sells the higher grade, not because it owns a purity position.
The forecast is a mix story, not a volume story: 1.63 per cent volume against 3.60 per cent value. Phytase removes DCP first and spares MCP, because once the ration’s phosphorus is cut to the technical minimum, what remains has to be available rather than merely present. MCP sells for 58.5 per cent more a tonne but only 29.68 per cent more per tonne of contained phosphorus. The market pays for bioavailability, and bioavailability is a certificate — which is the one thing in this segment that can be sold at a premium without a new furnace.
What China is exporting, in the most dilute form it makes
Customs data closes the argument. Chinese feed-grade DCP exports hit 261,399.22 tonnes in 2025, up 35.66 per cent, worth USD 125,166,947, up 56.60 per cent. Realisation went from USD 414.81 to USD 478.83, up 15.43 per cent — volume up a third and unit value up a seventh in the same year.
On a contained basis that is USD 2,660 per tonne of phosphorus leaving the country, in the same year Chinese DAP exports fell 23.8 per cent. A country that has decided to restrain its fertiliser exports is exporting its phosphate as animal feed instead — a product at 0.70 on the contained-phosphorus index, which is to say the least valuable tonne of phosphorus it is capable of shipping.
That is a defensible strategy only if the alternative is not shipping it at all. It is also exactly what the 44.4 per cent food-grade premium, and the 2.4 times purity premium outside China, exist to tell you: the tonnage is not the business. The grade is.