Bis(chloromethyl) ether

Bis(chloromethyl) ether is an organic compound with the chemical formula (CH₂Cl)₂O. It is a colourless liquid with an unpleasant suffocating odour and it is one of the chloroalkyl ethers. Bis(chloromethyl) ether was once produced on a large scale, but was found to be highly carcinogenic and thus such production has all but ceased.