Title: Silver Sulfide
CAS Registry Number: 21548-73-2
Synonyms: Argentous sulfide
Molecular Formula: Ag2S
Molecular Weight: 247.80
Percent Composition: Ag 87.06%, S 12.94%
Literature References: Occurs in nature as the mineral
argentite. Usually prepd from the elements: H?nigschmid, Sachtleben,
Z. Anorg. Allg. Chem. 195, 207 (1931).
Properties: Grayish-black, heavy powder. The cryst structure is orthorhombic, changing to cubic when heated above 179°. d420 7.234. mp 845°. Insol in water. Sol in nitric acid, in solns of alkali cyanides.
Melting point: mp 845°
Density: d420 7.234
Use: In ceramics.