1. Decides, in accordance with paragraph 4 (a) of Article 8 of the Convention, that it is satisfied that the screening criteria have been fulfilled for hexachlorobutadiene, as set out in the evaluation contained in the annex to the present decision;

2. Also decides, in accordance with paragraph 6 of Article 8 of the Convention and paragraph 29 of the annex to decision SC-1/7, to establish an ad hoc working group to review the proposal further and to prepare a draft risk profile in accordance with Annex E to the Convention;