ChemicalBook--->CAS DataBase List--->21548-73-2

21548-73-2

21548-73-2 Structure

21548-73-2 Structure
IdentificationMore
[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 PropertiesBack 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/nmb/nmc/nmα/oβ/oγ/oV/nm3
0.4230.6910.7879099.58900.2268
[InChI]

1S/2Ag.S
[InChIKey]

OCWNMDUAUUAHSJ-UHFFFAOYSA-N
[SMILES]

[Ag]S[Ag]
[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 InformationBack Directory
[Chemical Properties]

Grayish-black powder.Soluble in concentrated sulfuric and nitric acids; insoluble in water.
[General Description]

Safety DataBack 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
[Storage Class]

13 - Non Combustible Solids
[Hazard Classifications]

Eye Irrit. 2
Skin Irrit. 2
STOT SE 3
Questions And AnswerBack 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.
Well-known Reagent Company Product InformationBack Directory
[Acros Organics]

Silver(I) sulfide, 99.90%(21548-73-2)
[Alfa Aesar]

Silver sulfide, Premion, 99.998% (metals basis)(21548-73-2)
[Sigma Aldrich]

21548-73-2(sigmaaldrich)
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