Question to the Department for Business, Energy and Industrial Strategy:

To ask Her Majesty's Government in the light of the disposal of chemicals from a laboratory on the Sellafield Site on 21 October, whether the chemical tetrahydrofuran was contained in a canister or canisters that showed visual evidence of crystallisation forming highly-explosive peroxides; and whether any such canisters had been opened previously.

The chemicals disposed of at the Sellafield Site on 21 October showed no visible evidence of crystallisation. The containers had been opened previously.