From Ammonia Leak to Poison Gas: A Week of Chemical Emergencies in Germany

A series of chemical incidents across Germany over four days has put industrial safety and hazardous-material transport under fresh scrutiny. The string of events stretched from a paper factory in Karlsruhe to a university lab in Zurich, and included a highway crash involving tuberculosis pathogens.

The most recent episode unfolded on Thursday evening at the Maxau paper mill in Karlsruhe. Around 8:40 p.m., a significant volume of ammonia escaped inside the production facility. Fire crews deployed a special ABC unit — trained to handle atomic, biological and chemical threats — and managed to contain the leak quickly. The operation wrapped up by 10:30 p.m. No one was injured, and emergency services said the public and environment were never at risk. The cause of the leak remains unknown.

The recent chemical leaks across Germany underline a critical point: any workplace handling hazardous substances must have thorough risk assessments in place. UK employers have a legal duty under COSHH regulations to identify and control dangerous substances — and failing to do so can lead to severe penalties. A free COSHH Risk Assessment Toolkit provides 43 ready?to?use templates, checklists and toolbox talks to help you stay compliant and protect your workforce. Get the free COSHH Risk Assessment Toolkit

Two days earlier, a different kind of chemical spill struck the transport sector. On June 4, a delivery truck carrying tuberculosis pathogens crashed on the A20 motorway near Jarmen in northeastern Germany. The driver suffered serious injuries. Firefighters had to decontaminate ten of their own personnel after handling the scene.

That same day, across the border in Switzerland, a precautionary evacuation emptied parts of the ETH Zurich campus. Around 270 people left the building while a gas cylinder filled with chlorine trifluoride — a highly toxic and spontaneously combustible substance — was removed. The operation took six hours.

On June 2, a brewery in Vilshofen, Lower Bavaria, became the site of another hazardous leak. A forklift driver accidentally punctured a container holding nearly 1,000 litres of nitric acid. The escaping acid produced a toxic vapour cloud. Eight people sustained minor injuries, among them four firefighters.

Later that afternoon, a faulty liquefied petroleum gas tank in Langenhahn, a town in the Westerwald region, triggered a large-scale evacuation. The underground tank could not be sealed, so specialist firms were called in to pump out the contents. Nearly 100 emergency workers responded, and two people were taken to hospital for observation.

On June 3, an ICE high-speed train in Rhineland-Palatinate had to be evacuated after an unknown individual sprayed an irritating liquid inside a carriage. A train attendant briefly lost consciousness. The track closure affected 167 passengers.

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