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21548-73-2

Name SILVER(I) SULFIDE
CAS 21548-73-2
EINECS(EC#) 244-438-2
Molecular Formula Ag2S
MDL Number MFCD00003406
Molecular Weight 247.8
MOL File 21548-73-2.mol
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Chemical Properties

Appearance Grayish-black powder.Soluble in concentrated sulfuric and nitric acids; insoluble in water.
Melting point  845 °C(lit.)
Boiling point  decomposes [HAW93]
density  7.234 g/mL at 25 °C(lit.)
solubility  Soluble in aq. HCN, aq. citric acid with KNO3. Insoluble in acids, alkalies, aqueous ammoniums.
form  Powder
color  Light yellow
Specific Gravity 7.317
Stability: Stable. Incompatible with acids, strong oxidizing agents.
Water Solubility  Soluble in HNO{3}, alkali cyanide solutions. Insoluble in water
Sensitive  Light Sensitive
Merck  14,8530
Solubility Product Constant (Ksp) pKsp: 49.20
Uses
Silver sulfide is a brownish back powder formed by the combination of an alkaline sulfide with silver. It is a very stable compound made when toning silver-based images in sulfides. It is soluble in sulfuric and nitric acids but insoluble in water and alcohol.
CAS DataBase Reference 21548-73-2(CAS DataBase Reference)
EPA Substance Registry System Silver sulfide (21548-73-2)

Safety Data

Hazard Codes  Xi
Risk Statements 
R36/37/38:Irritating to eyes, respiratory system and skin .
Safety Statements 
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36:Wear suitable protective clothing .
WGK Germany  3
F  8
TSCA  Yes
HazardClass  9
HS Code  28432900

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