Market evolution: Non-metal oxides (CN 281129) — 2015–2025

Introduction

This report examines the trade dynamics of CN 281129 — a residual category covering inorganic oxygen compounds of non-metals excluding carbon dioxide, silicon dioxide, diphosphorus pentaoxide, and oxides of boron. The heading encompasses nitrogen oxides, sulphur dioxide, sulphur trioxide (sulphuric anhydride), diarsenic trioxide, and various other non-metal oxide compounds. Over the 2015–2025 period, EU trade in this product underwent significant structural transformation: import volumes more than tripled, the composition of trade partners shifted dramatically, and the EU's trade surplus narrowed — even as domestic production expanded considerably. Three dynamics stand out above all: the explosive growth of imports (especially from China and Türkiye), the reorientation of EU export flows toward the United Kingdom and away from Asia-Pacific partners, and a rising concentration of import sourcing that raises questions about supply-chain resilience.

For the full interactive data, see the Scope & Definitions page on the Trade Dashboard.

1. A Tripling of Imports Fuelled by Nitrogen Oxides and a Radical Partner Reorientation

Import volumes surged from 6,641 tonnes to 22,021 tonnes over the decade

EU imports of CN 281129 grew at an extraordinary pace between 2015 and 2025. In value terms, imports rose from €16.5 million to €54.1 million (+226.7%), while quantities climbed from 6,641 tonnes to 22,021 tonnes (+231.6%). By contrast, the unit price of imports remained essentially flat, edging from €2,446/t down to €2,443/t (−0.1%). This indicates that the import surge was volume-driven, not price-driven: the EU simply bought far larger quantities of these chemicals from non-EU suppliers at roughly stable prices.

For detailed year-by-year evolution, see General Overview – Trade.

Nitrogen oxides (CN 28112930) account for nearly the entire import expansion

The Product Segment Breakdown reveals that the import boom is overwhelmingly concentrated in one sub-segment: nitrogen oxides (CN 28112930). Their import volume grew from 2,354 tonnes in 2015 to 20,315 tonnes in 2025 — an increase of 763%. The value of nitrogen oxide imports rose from €10.0 million to €49.7 million, and they now represent roughly 92% of all CN 281129 imports by value.

By contrast, the other three sub-segments declined or stagnated:

Nitrogen oxide imports were volatile in the early years but accelerated sharply from 2019 onwards, growing from 7,578 tonnes in 2019 to over 20,000 tonnes by 2025. This likely reflects rising demand from the chemical and automotive sectors, as well as the growing use of nitrogen oxides as intermediates in industrial chemistry.

China emerged from nowhere to become the EU's dominant import supplier

The most striking partner-level shift is the rise of China. In 2015, China supplied just €1.6 million worth of CN 281129 imports; by 2025, this had surged to €37.6 million — a 2,312% increase. China's share of EU imports in this product category grew from roughly 9% to approximately 70%.

Simultaneously, several traditional suppliers saw their share collapse:

See Top Partners – Imports.

Taiwan, which was the largest single import partner in 2015, saw its shipments decline from €34.5 million at their peak (in a year between 2015 and 2025) to just €0.85 million in 2025. Türkiye, meanwhile, appeared as a significant new source almost from zero, reaching €5.2 million. The Volatility data confirms that imports from both China (CV = 1.09) and Türkiye (CV = 1.15) are highly volatile, reflecting their rapid and uneven growth trajectories.

EU member states show divergent import patterns

Within the EU, Top Reporters – Imports reveals a sharp re-distribution of import activity:

Germany, Poland, and Belgium absorbed the bulk of the import growth — consistent with their large chemical and industrial bases — while the Netherlands, Slovenia, and France sharply reduced their third-country purchases, possibly reflecting supply-chain rerouting or declining domestic demand for these specific compounds.

2. Export Growth and Shifting Destinations Amid Price Shocks

EU exports grew more moderately than imports, eroding the trade surplus

Over the same period, EU exports of CN 281129 rose from €79.7 million to €106.4 million (+33.6%) in value and from 17,073 tonnes to 21,943 tonnes (+28.5%) in volume. The unit export price edged up from €4,642/t to €4,816/t (+3.8%). While this is respectable growth, it pales beside the 227% surge in imports, resulting in a narrowing of the trade surplus:

The trade balance peaked at around €119.5 million in an intermediate year (likely 2022, when export values hit their maximum of €175.5 million) before retreating sharply. The EU remained a net exporter throughout, but Net Import Reliance — which was −5.6% in 2015 — ended at −6.1%, a modest deepening that masks the underlying structural shift from surplus exporter toward a more balanced position.

The United Kingdom became the EU's top export destination, displacing the United States

The Top Partners – Exports data reveals a dramatic reorientation of EU export flows:

The UK's rise from €15.0 million to €36.0 million is consistent with post-Brexit trade dynamics: as the UK left the EU single market, it needed to source from the EU as a "third country," potentially increasing reported extra-EU trade flows. Conversely, exports to China and Australia collapsed — likely reflecting the maturation of local production capacity in those markets and growing competition from low-cost Asian producers.

Export price shocks point to energy-cost and supply disruptions

The Volatility & Shocks analysis detects three notable shock events:

The most severe was the 2022 export price shock to the United States (abnormality score of 78.7), coinciding with the European energy crisis following Russia's invasion of Ukraine. EU chemical producers faced surging energy costs, which translated directly into higher export prices. The 2018 UK price shock (+188.2% shift) likely reflects the initial impact of Brexit-related trade friction and documentation costs, while the 2018 Türkiye import price shock points to currency volatility affecting lira-denominated contracts.

Export flows were generally less volatile than imports. The most stable export relationships were with Türkiye (CV = 0.14) and Switzerland (CV = 0.15), while the most volatile were Norway (CV = 0.73) and the United Kingdom (CV = 0.38).

EU member state exporters experienced uneven fortunes

Austria remained the largest single EU exporter of CN 281129 throughout the period, with relatively stable export values around €25 million per year (−3.9% change). Germany, however, more than doubled its exports from €8.2 million to €22.0 million (+168%), and Belgium grew from €9.9 million to €17.0 million (+71.5%). Poland's export trajectory was the most dramatic — rising from virtually zero to €13.7 million — although its peak year saw exports of €44.6 million, indicating high year-to-year volatility. Hungary and Czechia, by contrast, saw substantial declines.

See Top Reporters – Exports for the full member-state breakdown.

3. Rising Import Concentration and Declining Trade Intensity Signal Structural Change

Import concentration nearly doubled, raising supply-chain vulnerability concerns

The Concentration (HHI) analysis reveals a striking divergence between import and export concentration:

An HHI above 2,500 is generally considered to indicate a highly concentrated market. The import HHI more than doubled in volume terms, reaching 5,729 — a level consistent with near-monopolistic sourcing from one or two dominant suppliers. This is entirely explained by China's rise to a ~70% import share. Export concentration, by contrast, remained moderate in value terms (2,090), reflecting a more diversified buyer base.

Poland and Germany stand out as the EU's most specialised producers

The Specialisation data for 2025 identifies the following EU member states as having a revealed comparative advantage (RCA > 1) in CN 281129:

Germany holds the largest absolute share of EU production (32.9%), but Poland's RCA of 4.65 indicates the strongest relative specialisation, suggesting that CN 281129 products are a disproportionately important part of Poland's export basket.

EU production expanded substantially, though trade intensity declined

Production volumes measured in kilograms of sulphur dioxide equivalent grew from 4.39 billion kg to 6.30 billion kg (+43.4%), while production value surged from €162 million to €887 million (+448%). The much larger increase in value relative to volume implies a significant compositional shift toward higher-value products within the CN 281129 basket — consistent with the extraordinary price inflation observed in the export sub-segment 28112990 ("other non-metal oxides"), where export unit prices rose from €8,953/t in 2015 to €29,812/t in 2025.

Despite growing production, the Trade Intensity and Export Propensity indicators both declined:

This suggests that while the EU's chemical industry is producing more of these compounds, an increasing share is being consumed domestically rather than exported — likely driven by growing intra-EU demand from downstream sectors. The salience scores (71.5 for export propensity, 69.8 for trade intensity) confirm that these vulnerability indicators remain moderately relevant but have weakened over the period.

Conclusion

The EU's trade in CN 281129 underwent a profound transformation between 2015 and 2025. The most consequential shift was the tripling of imports, driven almost entirely by nitrogen oxides (CN 28112930) sourced from China, which grew from a marginal supplier to controlling roughly 70% of EU import value. This concentration — reflected in a near-doubling of the import HHI — is the most significant structural vulnerability identified in this analysis.

On the export side, the EU maintained its net-exporter status and adapted to post-Brexit realities by reorienting flows toward the United Kingdom, while losing ground in Asia-Pacific markets. Export prices proved sensitive to energy-cost shocks, most notably in 2022. Domestic production expanded strongly in both volume and value, but the declining trade intensity suggests the EU is increasingly using these compounds within its own borders rather than exporting them.

The key risk going forward is the heavy import reliance on China for nitrogen oxides. Should geopolitical tensions, trade restrictions, or supply disruptions affect Chinese exports, the EU would face significant supply-chain challenges in a product category that underpins multiple downstream industries. Policymakers may wish to monitor this concentration closely and consider diversification strategies.