Gallium sulfide includes digallium trisulfide and gallium monosulfide, which are minor metal sulfides. Gallium trisulfide is white powder, however gallium monosulfide is yellow crystal. Ga2S3 is stable at room temperature and pressure. In air it slowly release hydrogen sulfide and turns into gallium trioxide, but quickly in water. Ga2S3 react with nitric acid to form hydrogen sulfide and sulfur and Ga3+ ion solution left. It dissolve in concentrated lye because it turns into gallium acid ion (IV). GaS sublimate at 900~1000℃ and decompose when higher than melting point. When heating in air, it release SO2. Processing it with 15% boilin acetic acid release hydrogen sulfide, which react with bromine violently. Gallium metal is raw material for GaS and Ga2S3.
Gallium Sulfide
CAS No.:12024-22-5
EINECS No.:234-692-2
Molecular Formula:Ga2S3
Molecular Weight:235.64
Density:3.65
Melting Point:1255
UN 3260 8/PG 2
CAS No.:12024-10-1
EINECS No.:234-688-0
Molecular Formula:GaS
Molecular Weight:101.79
Density:3.75
Melting Point:970℃
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