| Identification | More | [Name]
SILVER(I) SULFIDE | [CAS]
21548-73-2 | [Synonyms]
SILVER(I) SULFIDE
SILVER SULFIDE
SILVER SULPHIDE
silversulfide(ag2s)
disilver sulphide
SILVER(I) SULFIDE, 99.9%
Silver(I)sulfide,99.9+%(metalsbasis)
Silver(I) sulfide, 99.90%
silver(i) sulfide, premion
Silver(I) Sulphide
Silver(I) sulfide, Premion(R), 99.998% (metals basis)
Silver(I) sulfide, Premion, 99.998% (metals basis)
Bisargentio(I) sulfide
Thiodisilver(I)
Silver(I) sulfide, 99.999% (metals basis) | [EINECS(EC#)]
244-438-2 | [Molecular Formula]
Ag2S | [MDL Number]
MFCD00003406 | [Molecular Weight]
247.8 | [MOL File]
21548-73-2.mol |
| Chemical Properties | Back Directory | [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 | [crystal system]
Monoclinic | [Merck ]
14,8530 | [Solubility Product Constant (Ksp)]
pKsp: 49.20 | [Space group]
P21/n | [Lattice constant]
| a/nm | b/nm | c/nm | α/o | β/o | γ/o | V/nm3 | | 0.423 | 0.691 | 0.787 | 90 | 99.58 | 90 | 0.2268 |
| [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) |
| Hazard Information | Back Directory | [Chemical Properties]
Grayish-black powder.Soluble in concentrated
sulfuric and nitric acids; insoluble in water.
| [General Description]
|
| Safety Data | Back Directory | [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 |
| Questions And Answer | Back Directory | [Physical Properties]
Grayish-black orthogonal crystals or powder; density 7.23 g/cm3; Moh’s hardness 2.3; melts at 825°C; insoluble in water; soluble in nitric and sulfuric acids.
| [Occurrence and Uses]
Silver sulfide occurs in nature as mineral argentite. It is used in ceramics.
| [Preparation]
Mineral argentite is mined from mineral deposits, crushed, ground, and washed for use. In the laboratory, silver sulfide is obtained by passing hydrogen sulfide gas through a solution of silver nitrate. The precipitate is washed with hot water.
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