11.—(1) References to a substance listed in this paragraph are to any of the following substances—
(a)alkali metals and their oxides and alkaline earth metals and their oxides;
(b)organic solvents;
(c)azides;
(d)halogens and their covalent compounds;
(e)metal carbonyls;
(f)organo-metallic compounds;
(g)oxidising agents;
(h)polychlorinated dibenzofuran and any congener thereof;
(i)polychlorinated dibenzo-p-dioxin and any congener thereof;
(j)polyhalogenated biphenyls, terphenyls and naphthalenes;
(k)phosphorus;
(l)pesticides.
(2) In sub-paragraph (1), “pesticide” means any chemical substance or mixture prepared or used for destroying any pest, including those used for protecting plants or wood or other plant products from harmful organisms, regulating the growth of plants, giving protection against harmful creatures, rendering such creatures harmless, controlling organisms with harmful or unwanted effects on water systems, buildings or other structures, or on manufactured products, or protecting animals against ectoparasites.