Title: Phosphorus Pentaselenide CAS Registry Number: 1314-82-5 Molecular Formula: P2Se5 Molecular Weight: 456.75 Percent Composition: P 13.56%, Se 86.44% Literature References: Prepd by melting a mixture of phosphorus and selenium in an atm of CO2 or N2: Carius, Bogen, Ann. 124, 57 (1862); Kudchadker et al., Can. J. Chem. 46, 1415 (1968). Properties: Amorphous, glass, black-purple solid. Dec in steam and boiling water. Reacts with CCl4; insol in carbon disulfide.

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