September, 2020

This is a repeating event

202021SepAll DayOppau Explosion 1921BASF Oppau (DE)Lessons:Management of Change,Process KnowledgeIndustry:ChemicalsCountry:GermanyLanguage:EN Origin: IChemE Incident:Explosive decompositionHazards:ExplosiveImpact:HUMAN (Offsite Fatalities)Effects:> 100 FatalitiesMaterial:Ammonium Nitrate


On 21 September in 1921, two consecutive explosions occurred in a silo in the BASF plant in Oppau, Germany, creating a 20m deep, 90x125m large crater. The entire area was covered by dark green smoke and there were several additional fires and small explosions. At the time of the event 4500 tonnes of ammonium sulphate nitrate compound fertilizer (ASN) were stored in the silo.

The explosion killed 507 people and injured 1917. The plant and approximately 700 houses nearby were destroyed



IChemEInstitution of Chemical Engineers