Market evolution: Oxygenated carboxylic acids (CN 2918) — 2015–2025

Introduction

This report examines the EU's external trade in products classified under CN 2918 — Carboxylic acids with additional oxygen function and their anhydrides, halides, peroxides and peroxyacids; their halogenated, sulphonated, nitrated or nitrosated derivatives over the period 2015–2025. This product group spans a wide range of organic chemicals — from bulk food-grade acids such as citric and lactic acid to higher-value pharmaceutical intermediates and specialty esters. Over the decade, the EU's trade in these products has undergone significant structural change: import volumes have surged while unit prices have declined, export volumes have contracted, and the bloc's net import reliance has shifted decisively from near self-sufficiency to pronounced dependency. At the same time, 2022 brought an extraordinary price shock that, while partially reversed, left lasting marks on trade patterns. The following three sections unpack these dynamics in detail.

1. A Decade of Divergence: Import Volumes Surge While Export Prices Climb

The period 2015–2025 is characterised by a striking decoupling between volumes and values on the import and export sides. The EU has been importing ever-larger quantities at declining unit prices, while exporting smaller volumes at rising unit prices — a pattern consistent with the bloc's gradual specialisation in higher-value downstream segments.

Import volumes grew by nearly half, even as prices fell

EU imports of CN 2918 rose from 423,873 tonnes in 2015 to 612,412 tonnes in 2025, a gain of 44.5%. Over the same period, the average import unit price declined from €2,786/t to €2,291/t (−17.8%). Despite this price erosion, the sheer volume growth pushed total import value up from €1,181 million to €1,403 million (+18.8%). This pattern — growing volumes at falling prices — is typical of increasing reliance on large-scale, cost-competitive overseas suppliers of bulk oxygenated carboxylic acids.

Export volumes contracted, but higher-value shipments sustained revenue

In contrast, EU exports fell from 215,849 tonnes to 194,363 tonnes (−10.0%). However, export unit values rose from €3,811/t to €5,082/t (+33.3%), lifting total export value from €823 million to €989 million (+20.3%). The widening gap between export and import unit values — €5,082/t versus €2,291/t by 2025 — strongly suggests that the EU's export basket is skewing toward higher-value, more specialised derivatives, while imports increasingly cover bulk commodity acids.

EU production stagnated, deepening structural import reliance

According to PRODCOM-based EU production data, output volumes barely changed over the decade, moving from 674,747 tonnes (2015) to 685,657 tonnes (+1.6%). Production value did rise from €1,501 million to €1,775 million (+18.3%), reflecting price inflation and a possible shift toward higher-margin products. But against a backdrop of 44.5% import volume growth, flat domestic output implies that virtually all incremental demand was met from abroad.

The consequences are visible in the net import reliance indicator, which swung from −5.1% in 2015 to +18.8% in 2025 — a change of 468%. In 2015, the EU was broadly self-sufficient in CN 2918 products; by 2025, nearly one-fifth of its apparent consumption depends on net imports. The trade deficit accordingly widened from €359 million to €414 million (+15.4%).

2. Geographic Consolidation: China's Rise and the Shifting Map of EU Trade Partners

The second defining trend of the decade is a marked geographic consolidation of import sourcing around China, combined with significant redistribution of both import and export flows caused by geopolitical and structural shifts — most notably Brexit.

China became the EU's overwhelmingly dominant import supplier

Among the EU's top import partners, China stands out. Chinese exports of CN 2918 to the EU surged from €413 million in 2015 to €671 million in 2025, a rise of 62.4%. This substantially exceeds the 18.8% growth in total EU imports, meaning China captured a growing share of the market. India also strengthened its position significantly (+41.8%, from €177 million to €250 million), while traditional Western suppliers — Switzerland (−8.3%), the United States (−11.9%) and the United Kingdom (−59.8%) — all saw their shares decline.

The import concentration index rose sharply, signalling growing vulnerability

The Herfindahl-Hirschman Index (HHI) for imports by value climbed from 1,804 to 2,791 (+54.7%), moving the EU from a "moderately concentrated" to a "highly concentrated" import market. In volume terms, the shift was even starker: the HHI rose from 3,798 to 6,001 (+58.0%). By contrast, the export concentration HHI remained essentially flat at around 830, indicating that EU exporters serve a well-diversified set of destination markets.

Brexit reshaped bilateral flows with the United Kingdom

The United Kingdom's departure from the EU customs union is visible in multiple ways. EU imports from the UK collapsed from €47 million to €19 million (−59.8%), the largest proportional decline among the top seven import partners. The UK also exhibited the highest import volatility coefficient (0.64) among major partners. Meanwhile, EU exports to the UK grew from €88 million to €126 million (+42.1%), suggesting that the EU retained — or even expanded — its role as a supplier to the UK market, while the reverse flow of UK chemicals into the EU was curtailed by new customs frictions.

Southern European members emerged as the most specialised exporters

Within the EU, specialisation analysis for 2025 reveals that Italy (RCA 2.02), Spain (1.67) and Belgium (1.59) are the most specialised exporters of CN 2918 products. Italy alone accounts for 16.2% of EU production in the category and 8.0% of total EU exports. Germany, while the largest absolute exporter (€311 million), has a more balanced profile. At the other end of the spectrum, Luxembourg, Finland, Malta and Estonia show negligible specialisation (RCA well below 0.1), reflecting the niche and geographically uneven nature of the EU's chemical manufacturing base.

3. The 2022 Price Shock: Disruption, Distortion and Lasting After-Effects

The year 2022 stands out as a watershed event in the CN 2918 market. Across nearly every product sub-segment and trade flow, prices spiked to levels not seen before or since. While some of the spike has unwound, its effects on trade composition and pricing benchmarks have persisted.

Bulk commodity acids experienced the sharpest price distortions

Examining import prices by product sub-segment, citric acid (CN 291814) — the single largest import item by volume — saw its unit price nearly double from €994/t in 2021 to €1,937/t in 2022, before falling back to €729/t by 2025. Salts and esters of citric acid (CN 291815) followed a similar trajectory, jumping from €1,169/t to €2,147/t. These spikes likely reflected post-COVID supply-chain disruptions, energy cost pass-through and destocking/restocking cycles that disproportionately affect bulk, globally traded commodity chemicals.

Higher-value specialty derivatives (CN 291899, CN 291830) experienced far more moderate price movements, consistent with longer-term contracts, smaller-volume shipments and less exposure to spot-market energy and logistics volatility.

Formal shock detection confirms widespread supply-side disruption

The shock detection analysis flagged three major events, all centred on 2022:

• EU exports to the United States registered a price shock with an abnormality score of 17.7 and a shift of +41.9%. Given that the US accounts for 21.8% of EU export value, this was by far the most economically significant event.
• EU imports from Thailand recorded a +109.1% price shift (abnormality 8.2), affecting 5.4% of import value.
• EU exports to Colombia showed the highest raw abnormality score (26.0) with a +50.9% price shift, though the affected share of total value was small (1.4%).

These shocks are consistent with a global repricing of chemical intermediates in 2022 driven by surging energy costs, post-pandemic demand recovery and disruption to Asian supply chains.

Trade volatility is concentrated in a small number of partners

Looking at year-on-year volatility (coefficient of variation), several partners stand out as exceptionally unstable:

• Türkiye (imports, CV 1.38) and Cambodia (imports, CV 0.98) show extremely erratic flows, suggesting sporadic, opportunistic trade rather than established supply relationships.
• The United Kingdom (imports, CV 0.64) reflects the structural disruption of Brexit.
• On the export side, Russia (CV 0.52) and Australia (CV 0.49) and Colombia (CV 0.49) show high volatility, though none represent a large share of total flows.

By contrast, the EU's largest trade partners — the United States (import CV 0.06, export CV 0.18) and Switzerland (import CV 0.11) — show far more stable, mature trading relationships.

Conclusion

Over the decade 2015–2025, the EU's trade in CN 2918 has undergone a fundamental structural shift. The bloc has moved from near self-sufficiency to a net import reliance of nearly 19%, driven by surging imports of bulk oxygenated carboxylic acids — particularly citric acid and its derivatives — largely from China. Import volumes grew 44.5% while EU production remained essentially flat, and the import concentration index rose by 55%, concentrating risk around a smaller number of dominant suppliers.

At the same time, EU exports have evolved toward higher-value segments, with unit export prices rising 33% even as volumes declined 10%. This is consistent with a progressive specialisation of EU producers in premium, lower-volume derivatives — a pattern reinforced by the strong export performance of Italy, Spain, Belgium, and Switzerland as a destination market (+112.7%).

The 2022 price shock was a defining event: bulk commodity prices nearly doubled before normalising, and formal shock detection flagged major disruptions in flows to and from the US, Thailand and Colombia. While prices have since retreated, the episode exposed the EU's vulnerability to supply-side volatility in a market now heavily dependent on Asian imports.

Looking ahead, policymakers and industry stakeholders may wish to monitor the concentration of import sourcing, the continued expansion of Chinese market share, and the resilience of the EU's higher-value export specialisation — three dynamics that will shape the strategic trajectory of this essential product group.