Gold Trisulfide
Structural Formula Vector Image
Title: Gold Trisulfide
CAS Registry Number: 1303-61-3
Additional Names: Auric sulfide
Molecular Formula: Au2S3
Molecular Weight: 490.13
Percent Composition: Au 80.37%, S 19.63%
Literature References: Prepd by treating dry lithium aurichloride Li(AuCl4) with hydrogen sulfide at -10°. The reaction product consists of HCl, lithium chloride, and auric sulfide. The lithium chloride can be removed by extraction with alcohol. Ref: Antony, Lucchesi, Gazz. Chim. Ital. 19, 552 (1889). Prepd from AuCl3 or HAuCl4 and H2S in abs ether at low temp: Guthier, Dürrwachter, Z. Anorg. Allg. Chem. 121, 266 (1922).
Properties: Black powder. Heating to 200° dec it into its elements.
Use: In photography.

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