HL Deb 06 November 1995 vol 566 c189WA
The Countess of Mar

asked Her Majesty's Government:

What are the known effects of combining phenols with organophosphates, and whether these effects were considered when sheep dips containing these chemicals were approved for use in the scheme for the eradication of sheep scab.

Lord Lucas

The direct chemical reaction of mixing the two chemicals was considered as part of the approval process. There was no reaction and no change in the composition of the dip. The known metabolism of each chemical in mammals is quite different and no effect is likely to arise within the body.