Diethyl ether (ethoxyethane) is a clear, highly volatile solvent with a boiling point around 34 °C. It dissolves many non‑polar organic compounds and is commonly used for liquid–liquid extractions, as a solvent for Grignard reactions and other organometallic chemistry, and in the production of pharmaceuticals, cellulose plastics and fragrances . Most diethyl ether is not made in a dedicated plant; instead it is produced as a by‑product during the vapor‑phase hydration of ethylene to ethanol. In this process, ethylene is hydrated over solid phosphoric‑acid catalysts and small adjustments allow more ether to form . Alternative routes include dehydrating ethanol over alumina catalysts, which can give diethyl‑ether yields up to 95 % . Because the molecule is flammable and can form peroxides on storage, it is usually sold with small amounts of stabiliser and packaged in specialised drums .
Diethyl ether remains essential in European industry. It is used to dissolve adhesives, extract vitamins and fragrances, act as a starting fluid for engines and serve as a reaction medium for synthesising active pharmaceutical ingredients. Because it has low viscosity and a high cetane number, it is also blended into starting‑fluid aerosols for diesel engines. European formulators therefore view diethyl ether as a critical solvent.
Tight supply in Europe
Decline in European chemical output
The European chemical industry entered a crisis during 2024–2025. According to the European Chemical Industry Council (Cefic) Chemical Trends Report Q3 2025, business confidence in the EU‑27 chemical sector deteriorated significantly from January to August 2025 . The report attributes this to energy prices in Europe remaining among the highest in the world and continued weak downstream demand . Chemical production across the EU‑27 fell 2.5 % between January and September 2025 compared with the same period in 2024; the steepest decline was recorded in the Netherlands (–6.2 %) while production in France fell 3.9 % . Cefic notes that total chemical output remains 10 % below pre‑crisis levels and sees little improvement in demand . Despite lower domestic output, chemical imports increased by 3.4 million tonnes in the first eight months of 2025 to 69.1 million tonnes, highlighting a growing reliance on foreign supply . The US was the largest chemical supplier to the EU (10.1 million tonnes), followed by China (6.7 million tonnes) and the UK (6.3 million tonnes) .
These broader industry trends tighten the supply of solvents like diethyl ether. High energy costs and poor profitability have led companies to close plants or reduce capacity. Cefic’s European Chemical Closures & Investments Radar (2022–2025) estimates that plant closures have increased six‑fold since 2022, cutting 37 million tonnes (≈9 % of total capacity) and eliminating about 20,000 direct jobs . With less domestic solvent production and fewer investment projects being announced, supply of diethyl ether has become constrained.
Limited diethyl‑ether production capacity
Unlike larger solvents such as ethanol or acetone, diethyl ether has very few dedicated production units in Europe. Most European output comes as a minor co‑product of ethylene hydration or ethanol dehydration. For example, Sasol announced in 2007 that it would double diethyl‑ether capacity at its Herne (Germany) solvents plant from 2.5 kt/y to 5 kt/y ; however, this expansion was small relative to European demand and there have been no publicly announced major expansions since then. Another producer, Synthesia Nitrocellulose in the Czech Republic, lists diethyl ether among its products, but describes it primarily as an industrial solvent and provides product specifications rather than capacity figures . Because most European diethyl‑ether production is tied to ethanol plants, output fluctuates with ethanol demand and is not easily increased during shortages.
Pressure on feedstocks
Diethyl ether production depends on ethanol availability. During 2024–2025 the European ethanol market experienced tight supply due to high feedstock prices and geopolitical tensions. Procurement Resource notes that European ethanol prices remained elevated in early 2024 because high feedstock costs and geopolitical tension restricted production . Tight ethanol supply restricts the amount of diethyl ether that can be co‑produced, adding further pressure to the solvent market. As European ethanol producers cut output, the resulting diethyl‑ether supply shrinks.
Europe’s reliance on imports
EU import data
Trade statistics from the World Bank’s World Integrated Trade Solution (WITS) database show that the European Union imported 963,452 kg of diethyl ether in 2024, worth approximately US$3.23 million . Imports were concentrated among a handful of suppliers:
| Country (supplier) | Value (US$ 000) | Quantity (kg) | Share of EU imports |
|---|---|---|---|
| India | 2,081.55 | 766,640 | ~64 % of value |
| United Kingdom | 363.40 | 31,362 | 11 % of value |
| Mexico | 333.83 | 82,518 | 10 % |
| Israel | 218.99 | 41,717 | 7 % |
| China | 138.96 | 37,240 | 4 % |
| United States | 78.30 | 3,677 | 2 % |
| Others (Switzerland, Japan, Canada, Saudi Arabia, Norway) | <15 | <200 | <1 % |
Data source: WITS; values for 2024
India’s dominance is striking: the EU purchased nearly two‑thirds of its diethyl‑ether imports from Indian manufacturers. Shipments from Mexico and Israel were also notable. Imports from the United Kingdom and the United States are smaller but provide strategic diversity. The data underline that the EU relies on extra‑EU producers for diethyl ether – particularly India – to compensate for its limited domestic capacity.
National‑level import patterns
Individual EU member states illustrate this reliance. For example, Germany, Europe’s largest exporter of diethyl ether, still imported US$1.38 million worth of diethyl ether in 2023, mainly from Belgium, Mexico, China, India and France. Germany’s imports grew fastest from Belgium and India between 2022 and 2023. Although Germany exports to the US, Belgium and Spain, its own imports highlight the continental supply imbalance. Similar patterns hold for Spain, Belgium and France, which appear in EU‑wide import statistics .
Why imports are critical
The EU’s dependence on imported diethyl ether reflects the tightness in domestic supply. High energy costs and plant closures have reduced Europe’s ability to make solvents. Because diethyl ether is essential for pharmaceuticals, flavors & fragrances, polymer resin modifiers and laboratory reactions, supply disruptions can quickly affect downstream industries. Companies may experience delays in Grignard synthesis, extraction processes or engine starting‑fluid production if solvent supply is interrupted. The sharp decline in European chemical business confidence and the drop in production emphasise the risk of relying solely on regional suppliers .
Moreover, EU chemical imports rose by 3.4 million tonnes in the first eight months of 2025 despite declining domestic production . The largest chemical import partners were the United States, China and United Kingdom , the same countries that supply diethyl ether. If trade frictions or logistical issues arise, European manufacturers could face significant shortages.
Conclusion – securing supply through Chemicals United
Diethyl ether is a versatile solvent used in many European industries. It is mainly produced as a co‑product of ethanol synthesis rather than in dedicated plants; thus its supply depends on ethanol production and energy economics . Europe’s chemical industry has faced high energy prices, low business confidence and numerous plant closures, which have cut output and reduced solvent availability . Trade statistics show that the EU imported nearly one million kilograms of diethyl ether in 2024, with about two‑thirds of this volume coming from India . Imports from the United Kingdom, Mexico, Israel, China and the United States make up most of the remainder . These numbers highlight Europe’s reliance on foreign suppliers and the vulnerability of downstream industries to supply disruptions.
For buyers concerned about solvent security, Chemicals United offers a reliable source of high‑quality diethyl ether. The company maintains stock in Europe and sources product from vetted international producers, helping customers bridge the gap between limited local production and strong demand. With Europe’s solvent supply likely to remain tight until energy costs fall and new capacity is built, working with an experienced distributor such as Chemicals United can protect production schedules and ensure consistent quality.
