Fluorene(CAS NO 86-73-7)
Preparation:
Distillation. The heavy wash oil including the anthracene oil front fraction was rectified with a 60-plate rectification column to cut 290-310 ° C. fluorene fraction; the fluorene fraction was rectified to cut 293-297 ° C. fluorene narrow fraction. The narrow fraction was cooled, crystallized, and centrifuged to obtain the crude product. The crude fluorene was recrystallized from a xylene-water mixed solvent to obtain an fluorene with a purity of about 95%.
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