FIELD: synthesis of highly pure phosphorous-containing compounds; purification of phosphorous pentoxide. SUBSTANCE: phosphorous is sublimated in vacuum at 370-400 C. Condensation is carried out either at temperature not less than 70 C while monolith polycrystalline product is prepared, or at temperature less than 70 C while powdery product is prepared. EFFECT: increased yield of desired product; increased rate of the process. 3 cl, 2 tbl
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Authors
Dates
1998-05-27—Published
1997-06-11—Filed