Market evolution: Sulphates and alums (CN 2833) — 2015–2025
Introduction
CN 2833 covers a heterogeneous group of inorganic sulphates, alums, and peroxosulphates (persulphates) — products widely used across water treatment, agriculture, pulp & paper, detergents, electroplating, and battery manufacturing. This bundling heading aggregates sub-products as varied as disodium sulphate, copper sulphate, magnesium sulphate, aluminium sulphate, nickel sulphate, and peroxosulphates, each governed by distinct demand drivers. The period 2015–2025 reveals a market in structural transformation: export values have surged even as volumes contracted, imports have roughly doubled, and geopolitical events — notably the Russia–Ukraine conflict and sanctions — have reshaped supply chains. This report analyses the key dynamics across three dimensions.
1. Price-driven export growth amid shrinking volumes
Aggregate exports have grown in value but contracted in tonnage
EU exports of sulphates (CN 2833) to non-EU countries rose from €324.7 million in 2015 to €518.2 million in 2025, a cumulative increase of +59.6%. However, the export volume fell from 2.03 million tonnes to 1.56 million tonnes over the same period (−23.2%). The net result is a doubling of the average unit value, from €160/t to €333/t (+107.8%). This price-led growth reflects the combined effects of input cost inflation (energy, raw materials), post-pandemic supply disruptions, and a compositional shift toward higher-value sub-products.
| Metric | 2015 | 2025 | Change |
|---|---|---|---|
| Export value (€M) | 324.7 | 518.2 | +59.6% |
| Export volume (kt) | 2,027 | 1,557 | −23.2% |
| Average export price (€/t) | 160 | 333 | +107.8% |
Nickel sulphate exports have surged, driven by battery demand
Among export sub-products, nickel sulphates (CN 283324) stand out: export volumes grew nearly eightfold, from approximately 5,000 tonnes in 2015 to nearly 39,000 tonnes in 2025, while values surged from €16.8 million to €132.7 million. This extraordinary growth is closely linked to the European battery value chain, as nickel sulphate is a key precursor for lithium-ion battery cathodes. Conversely, disodium sulphate (CN 283311), the largest export sub-product by volume, saw tonnage decline from 1.14 million tonnes to 967,000 tonnes, though its value remained broadly stable due to rising unit prices.
| Export sub-product | 2015 volume (t) | 2025 volume (t) | 2015 value (€M) | 2025 value (€M) |
|---|---|---|---|---|
| Disodium sulphate (283311) | 1,140,695 | 967,315 | 107.6 | 94.8 |
| Other sulphates (283329) | 660,567 | 361,952 | 66.4 | 117.3 |
| Sulphates of nickel (283324) | 4,962 | 38,845 | 16.8 | 132.7 |
| Sulphate of magnesium (283321) | 89,983 | 90,648 | 33.8 | 75.0 |
| Sulphate of aluminium (283322) | 64,778 | 51,869 | 14.0 | 14.7 |
| Sulphates of copper (283325) | 8,850 | 6,496 | 17.8 | 21.2 |
Key export markets have diversified, with strong growth in North Africa and the Middle East
Brazil remained the top export destination, with value growing from €39.6 million to €53.6 million (+35.4%). The United States saw robust growth (+73.0%, to €45.9 million). However, the most striking expansions occurred in Morocco (+184.0%, to €24.4 million) and Egypt (+268.4%, to €19.8 million), reflecting growing demand for water treatment chemicals and industrial sulphates in the region. Meanwhile, exports to the United Kingdom declined by −24.8% to €34.5 million, a likely consequence of post-Brexit trade friction. The export HHI concentration index declined modestly from 564 to 486 (−13.9%), indicating a gradual diversification of export destinations.
2. Import expansion, geopolitical disruption, and the reshaping of supply chains
Imports have roughly doubled in both value and volume
EU imports from non-EU countries grew from €200.0 million (406,000 tonnes) in 2015 to €410.4 million (826,000 tonnes) in 2025, representing increases of +105.2% in value and +103.1% in volume. Unlike the export side, import prices remained nearly flat (€492/t to €497/t, +1.0%), suggesting that the EU has increasingly sourced higher volumes of competitively priced sulphates from abroad. This stands in sharp contrast to the export price trajectory and raises questions about the relative cost structure of EU producers versus non-EU suppliers.
| Metric | 2015 | 2025 | Change |
|---|---|---|---|
| Import value (€M) | 200.0 | 410.4 | +105.2% |
| Import volume (kt) | 406 | 826 | +103.1% |
| Average import price (€/t) | 492 | 497 | +1.0% |
China and Türkiye have displaced Russia as primary suppliers
The most significant structural shift in imports has been the collapse of Russian supply and its replacement by Chinese and Turkish exporters. Russian imports fell from €35.4 million in 2015 to €6.1 million in 2025 (−82.9%), reflecting EU sanctions and trade restrictions following the 2022 invasion of Ukraine. Simultaneously, Chinese imports surged from €52.2 million to €130.2 million (+149.5%), and Turkish imports nearly quadrupled from €17.4 million to €59.8 million (+243.4%). Serbia emerged as a fast-growing source, with imports increasing more than fifteenfold (from €0.8 million to €12.2 million, +1,473%). Conversely, Ukrainian imports collapsed from €4.4 million to essentially zero (−99.2%) due to the conflict. The import HHI concentration index rose from 1,367 to 1,634 (+19.5%), indicating growing dependence on a narrower set of suppliers — a potential vulnerability.
| Import partner | 2015 value (€M) | 2025 value (€M) | Change |
|---|---|---|---|
| China | 52.2 | 130.2 | +149.5% |
| Türkiye | 17.4 | 59.8 | +243.4% |
| India | 16.2 | 24.7 | +52.7% |
| Norway | 6.0 | 13.6 | +127.1% |
| Serbia | 0.8 | 12.2 | +1,473.0% |
| Russian Federation | 35.4 | 6.1 | −82.9% |
| Ukraine | 4.4 | 0.04 | −99.2% |
Import sub-product composition has shifted markedly
On the import side, the most notable trends are the dramatic growth of "other sulphates" (CN 283329), which surged from 166,000 tonnes to 538,000 tonnes, and magnesium sulphate (CN 283321), which roughly doubled from 95,000 tonnes to 190,000 tonnes. Disodium sulphate imports collapsed from 50,000 tonnes to just 5,000 tonnes — a decline of over 90% — suggesting that the EU has moved from net importer to self-sufficient (or even net exporter) in this sub-product. Copper sulphate imports declined from 42,000 tonnes to 25,000 tonnes (−40.5%), while peroxosulphate imports remained stable at around 10,000 tonnes.
| Import sub-product | 2015 volume (t) | 2025 volume (t) | 2015 value (€M) | 2025 value (€M) |
|---|---|---|---|---|
| Other sulphates (283329) | 165,666 | 537,889 | 74.4 | 173.0 |
| Sulphate of magnesium (283321) | 94,970 | 190,492 | 17.0 | 40.2 |
| Sulphate of copper (283325) | 42,206 | 24,972 | 72.8 | 68.2 |
| Sulphate of barium (283327) | 33,684 | 10,201 | 9.7 | 7.8 |
| Peroxosulphates (283340) | 10,132 | 9,739 | 12.4 | 15.0 |
| Disodium sulphate (283311) | 49,520 | 4,873 | 6.9 | 3.7 |
| Sulphate of aluminium (283322) | 5,230 | 11,105 | 1.6 | 4.0 |
3. Structural realignment: the EU shifts from net importer to net exporter
Net import reliance has flipped sign
One of the most striking developments of the period is the reversal in the EU's trade position. In 2015, the EU had a positive net import reliance of +33.5%, meaning that imports represented a significant share of apparent consumption. By 2025, this figure had fallen to −8.1%, indicating that the EU has become a modest net exporter of sulphates in value terms. The trade surplus, however, narrowed from €124.6 million to €107.7 million (−13.6%), as import growth outpaced export growth in absolute terms.
EU production has expanded dramatically
The data shows an extraordinary expansion in EU production of sulphates, with quantity growing from approximately 45,500 kg (in the available data subset) to nearly 9 billion kg, and value rising from €21.9 million to €1.44 billion. While the magnitude of this change partly reflects data coverage evolution and the broad scope of the bundled heading, it is consistent with the broader narrative of EU industrial investment in sulphates — particularly nickel sulphate for batteries and magnesium sulphate for agriculture and technical applications.
Export propensity has surged, signalling greater outward orientation
The EU's export propensity for sulphates — the ratio of exports to production — rose from 16.3% in 2015 to 30.6% in 2025, an increase of +87.2%. This is the most "salient" vulnerability indicator for this product, suggesting that EU sulphate producers are increasingly oriented toward foreign markets. Trade intensity, by contrast, declined from 49.8% to 43.6% (−12.5%), reflecting the fact that production growth has outpaced the combined growth of imports and exports.
| Vulnerability indicator | 2015 | 2025 | Change |
|---|---|---|---|
| Net import reliance (%) | +33.5 | −8.1 | −124.2% |
| Trade intensity (%) | 49.8 | 43.6 | −12.5% |
| Export propensity (%) | 16.3 | 30.6 | +87.2% |
Specialisation is concentrated in a handful of Member States
Within the EU, export specialisation (measured by the Revealed Symmetric Comparative Advantage index) is led by Spain (RSCA 0.275), Poland (0.188), Germany (0.165), Belgium (0.157), and Sweden (0.098). Germany accounts for the largest absolute share of EU exports (29.5% of production, 21.2% of total exports). At the other end of the spectrum, Cyprus, Ireland, Croatia, Latvia, and Greece show minimal specialisation in this product group. The concentration of production and exports in a small number of Member States implies that disruptions in any one country could have outsized effects on EU trade flows.
Conclusion
The EU market for sulphates, alums, and peroxosulphates (CN 2833) underwent a profound structural transformation between 2015 and 2025. Export growth was overwhelmingly price-driven, with unit values doubling while volumes contracted — a pattern consistent with rising energy and raw material costs and a compositional shift toward higher-value products such as nickel sulphate for the battery sector. Imports roughly doubled in both value and volume, driven by Chinese and Turkish supply that replaced sanctioned Russian exports and collapsed Ukrainian trade. The EU's trade position flipped from net importer to modest net exporter, supported by a dramatic expansion of domestic production and a near-doubling of export propensity. However, rising import concentration (HHI +19.5%) and growing dependence on a small number of non-EU suppliers — particularly China, which now accounts for nearly a third of import value — represent emerging vulnerabilities. The extreme price volatility observed in certain bilateral flows (Algeria, Norway, Brazil) underscores the exposure of this market to commodity price shocks. Going forward, the interplay between battery-driven demand for nickel sulphate, water treatment demand for aluminium and magnesium sulphates, and the geopolitical reconfiguration of supply chains will continue to shape the evolution of this market.