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This separation and purification of anthracene of the oil of anthracene
This separation and purification of anthracene of the oil of anthracene
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机译：蒽油中蒽的分离纯化
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摘要
Anthracene is sepd. from coal tar-anthracene oil by (i) crystallisation with MeOH as diluent, followed by (II) solvent extn. of crude anthracene, pref. with N-Me pyrrolidone. Crystallisation can take place in 1 or 2 steps, by treating the anthracene oil, at 20-90 (40-70) deg.C, with 5-20 wt.%, w.r.t. anthracene oil, of MeOH and cooling for 1-5 (1-2) hrs. For solvent extn., the crystals are mixed with 50-200 wt.%, w.r.t. crude anthracene, of N-Me pyrrolidone, at 10-60 deg.C. The anthracene obtd. is at least 95 wt.% pure and can be processed to anthraquinone.
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