Cupric Selenate

Title: Cupric Selenate
CAS Registry Number: 15123-69-0
Molecular Formula: CuO4Se
Molecular Weight: 206.50
Percent Composition: Cu 30.77%, O 30.99%, Se 38.24%
Line Formula: CuSeO4
Literature References: Prepd by the action of selenic acid on cupric carbonate: Klein, Ann. Chim. 14, 263 (1940).
Derivative Type: Pentahydrate
Properties: Light-blue triclinic crystals. Loses water above 80°, forming the monohydrate at 150-220° and becoming anhydr by 265°; dec to the selenite and basic selenite at ~480° and to CuO at ~700°. d 2.56. Sol in water; very slightly sol in acetone. Practically insol in alcohol.
Density: d 2.56
Use: In coloring Cu or Cu alloys black.
Cupric Selenide Cupric Selenite Cupric Stearate Cupric Sulfate Cupric Sulfate, Basic