Acenaphthalene Purification

[208-96-81 M 152.2, m 92-93O. Dissolved in warm redistd MeOH, filtered through a sintered glass funnel and cooled to -78O to ppte the material as yellow plates [Dainton, Ivin and Walmsley TFS 56 1784 19601. Alternatively can be sublimed in vucuu.