Arsenic Pentaselenide
Title: Arsenic Pentaselenide
CAS Registry Number: 1303-37-3
Molecular Formula: As2Se5
Molecular Weight: 544.64
Percent Composition: As 27.51%, Se 72.49%
Literature References: Prepd by melting the correct proportions of arsenic and selenium in a sealed tube containing nitrogen: Szarvasy, Ber. 28, 2654 (1895); 30, 1244 (1897); by the action of an arsenic salt on a solution of hydrogen selenide: Moser, Atynsky, Monatsh. Chem. 45, 235 (1925).
Properties: Black, brittle solid with a metallic luster. Poisonous! Dec when heated in air. Sol in alkali hydroxides and sulfides; insol in water, dilute acids, concd hydrochloric acid, alcohol, ether, carbon disulfide; dec in nitric acid.
Status: This monograph has been retired and is no longer subject to revision or update.

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