Ammonium Sulfide
Title: Ammonium Sulfide
CAS Registry Number: 12135-76-1
Additional Names: True ammonium sulfide
Molecular Formula: H8N2S
Molecular Weight: 68.14
Percent Composition: H 11.83%, N 41.11%, S 47.06%
Line Formula: (NH4)2S
Literature References: Prepn: Gmelins, Ammonium (8th ed.) 23, p 246 (1936). Prepn of high purity soln: Johnson et al., Chemist-Analyst 53, 46 (1964).
Properties: Forms crystals below -18°; at high temps it dec into NH4HS, NH3, polysulfides, etc.
Use: To apply patina to bronze, in photographic developers, in textile manufacture, in trace metal analysis.

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