§ Mr. David Steelasked the Secretary of State for Education and Science what evidence she has that bis (chloromethyl) ether formed spontaneously when formaldehyde and hydrochloric acid come together is carcinogenic.
§ Mr. Dudley SmithI have been asked to reply.
My Department has no evidence that the bis chloromethyl ether formed spontaneously in humid air when formaldehyde and hydrochloric acid come together accidentally is carcinogenic to man in the concentrations likely to be encountered.