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51595-71-2

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51595-71-2 Structure

51595-71-2 Structure
IdentificationBack Directory
[Name]

Thiodimercury(I)
[CAS]

51595-71-2
[Synonyms]

Thiodimercury(I)
Mercurous sulfide
Mercury(I) sulfide
[MOL File]

51595-71-2.mol
Chemical PropertiesBack Directory
[Melting point ]

decomposes [LAN05]
[solubility ]

insoluble in H2O
[form ]

black powder
[color ]

unstable
[Water Solubility ]

g/L solution H2O: 2.8×10?23 (25°C) [KRU93]
[Solubility Product Constant (Ksp)]

pKsp: 47.0
Hazard InformationBack Directory
[Chemical Properties]

black [LAN05]
[Definition]

The brownish black precipitate formed when mercury is treated with cold concentrated sulfuric acid for a long time is thought to be mercury(I) sulfide. Alternatively it may be prepared by the action of hydrogen sulfide or an alkaline sulfide on a mercury(I) salt solution. As soon as the mercury(I) sulfide has been formed it disproportionates to give mercury(II) sulfide and mercury.
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