HC Deb 29 November 1982 vol 33 c29W
Mr. Wardell

asked the Secretary of State for Industry if he will list in the Official Report the commodities produced for sale in the United Kingdom in 1981 that contained dioxin.

Mr. MacGregor

I assume that the hon. Member is referring to 2,3,7,8-tetrachlorodibenzo-p-dioxin rather than to the family of dioxins generally. I understand that this substance may be present as an impurity in trace amounts in an indefinite number of derivatives of higher chlorinated phenols.