Editorial Article
Forty-Seven Per Cent Leaves the Country, and the Ban Is Following It
China made about 473.5 thousand tonnes of sodium tripolyphosphate in 2025 and exported 222 thousand tonnes of it. That is 46.88 per cent of national output leaving the country, in a product the state has classified as restricted and whose output has fallen 12.14 per cent a year since 2020.
Those three facts do not normally coexist. A product under statutory contraction, with a falling domestic base, should not also be the country’s fastest-growing export line inside its own segment. The explanation is that the export book is not growth — it is displacement. The tonnage that used to be sold into Chinese detergent formulations is being sold into jurisdictions that have not yet done what Europe did.
The volume that is capped by a catalogue
Output ran 777 kt in 2020 and 463 kt in 2024, and capacity fell 13.90 per cent in that final year alone. This is not substitution. The 2024 NDRC industrial catalogue lists sodium tripolyphosphate as a restricted product and requires the elimination of single lines below 10 kt a year. A supply ceiling has been applied to a product whose demand was already shrinking, which is an unusual thing for a regulator to bother doing — unless the point is the effluent and the energy rather than the market.
Whatever the intent, the effect is arithmetical: the domestic industry’s tonnage is set by administrative list, and its price is set by a separate commodity, soda ash, which fell 18.19 per cent through 2025 and handed the industry RMB 200 a tonne of margin it had done nothing to earn.
The domestic base is smaller than it looks
| 2025 STPP balance | Volume (kt) | Note |
|---|---|---|
| Production | 473.5 | derived from consumption + exports − imports |
| Domestic apparent consumption | 253.0 | industry series |
| Exports | 222.0 | China Customs, +3.7% |
| Imports | 1.5 | China Customs, −60.5% |
| Exports as share of output | 46.88% | |
| Detergent share of domestic use | >50% | so detergent ≈ 126.5 kt |
| A European-style detergent limit removes | 126.5 | 26.72% of national output |
Read the last two rows together. More than half of Chinese domestic consumption is detergent, and the domestic market is 53 per cent of output. So a detergent-phosphate restriction of the kind Europe imposed would strand 126.5 kt — a quarter of national production — in a market whose only growth outlet is the export book, at an export price that fell from USD 1,040 to USD 807.56 inside the same year.
Where the tonnage goes
The 2025 export book ran to Brazil, Thailand, the Philippines, Mexico, Indonesia, India, the Dominican Republic, Spain, Vietnam and the United States. That list is the map of jurisdictions that have not restricted detergent phosphates — and it includes Spain, which is a reminder that the European restriction is a Union instrument applied unevenly in practice across product categories and end-uses.
Export realisation is derived rather than asserted. The first eight months moved 137.9 kt at USD 1,040; the residual 84.1 kt cleared at the December assessment of USD 807.56. Weighted, the year realised USD 949.08 a tonne. A 22 per cent fall in unit value across twelve months, on a volume that had nowhere else to go.
The asymmetry that makes it a countdown
Europe’s story is the template and it is worth stating precisely, because it was not only a detergent ban. In the Commission’s own anti-dumping record, Thermphos International BV was “the only producer of white phosphorus in the Union, representing the total Union production”; it filed for bankruptcy, the Breda District Court ordered its liquidation on 21 November 2012, and Union production of the element stopped. Europe kept the salt and lost the element — which is why the Commission’s own assessment puts EU tripolyphosphate production below 10 per cent of world output.
So the mechanism is not “a regulation removed a market”. It is that a demand restriction arrived at a moment when the supply side had already consolidated to a single plant. That is what makes the Chinese exposure uncomfortable: China’s supply side is also consolidating by catalogue, and its detergent demand has not yet been restricted at all.
What is actually left
Grade. Industrial STPP sells at RMB 8,000–8,800 a tonne; food grade at RMB 11,200–12,200 — a 44.4 per cent premium for a specification that contains identical phosphorus. Volume is capped by catalogue and price is falling; grade is the only line item that can grow. The parent report puts value growth at 6.21 times volume growth across the salts market, the widest gap in the segment, and this is the mechanism: every incremental tonne of value is a qualification file, not a reactor.
Which is the honest conclusion about a market in statutory decline. The salt is the last product in this chain still priced as a chemical rather than as a service, and the tonnage is leaving. What stays is the specification.