Picric Acid canister blown up by bomb squad in Bradford
Army bomb disposal experts have blown up a canister containing picric acid at the University of Bradford.
West Yorkshire Police said the acid was in a sealed canister and had "remained in a safe place overnight" after being found on Wednesday afternoon.
The canister was taken to a remote site, covered in sandbags and a controlled explosion was carried out.
Picric Acid is normally kept in a wet form, as when it dries out it is sensitive to shock and friction.
A spokesman for the university said the acid was found during a regular audit of chemicals on site.
He said: "It was probably less than a litre and was discovered in a reinforced chemical store. A limited amount of people have access to this store."