Silver(1+) sulfidosilver

Basic Information

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CAS Number

21548-73-2

Molecular Formula

Ag2S

Molecular Weight

139.94 g/mol

EINECS

244-438-2

Chemical Classification

Basic Chemical Raw Materials Inorganic Chemicals Acids

Basic Physical Properties

Melting Point

845 °C

Boiling Point

decomposes [HAW93]

Density

7.234 g/mL at 25 °C

Water Solubility

Soluble in HNO{3}, alkali cyanide solutions. Insoluble in water

SMILES

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[Ag-]=S

InChI

InChI=1S/2Ag.S

InChIKey

OCWNMDUAUUAHSJ-UHFFFAOYSA-N

LogP

0.6457

Topological Polar Surface Area

0.0 Å²

Hydrogen Bond Donor/Acceptor

0 / 0

Complexity

2.8

Safety Information

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GHS Hazard Pictograms

H315

H319

H335

Hazard Statement

H315 Causes skin irritation
Skin corrosion/irritation

H319 Causes serious eye irritation
Serious eye damage/eye irritation

H335 May cause respiratory irritation
Specific target organ toxicity, single exposure; Respiratory tract irritation

Hazard Class

Class 9 Class 9

Stability

稳定的。与酸、强氧化剂不相容。

Sensitiveness

Light Sensitive

Synonyms & References

English

SILVER SULFIDE
SILVER SULPHIDE
SILVER(I) SULFIDE
disilver sulphide
Silver(I) Sulphide
Silver(I) sulfide, Premion(R), 99.998% (metals basis)
Silver(I) sulfide, Premion, 99.998% (metals basis)
SILVER(I) SULFIDE, 99.9%
Silver(I)Sulfide
silversulfide(ag2s)
disilver sulphide
silver(i) sulfide, premion
Bisargentio(I) sulfide
Thiodisilver(I)
argentiosulfanylsilver
Silver trifluoroMethanesulfonate
Ag2S
Silver sulfide (Ag2S)
Acanthite
Disilver sulphide
Silver(I) sulfide, Premion?
5437AF
Silver sulfide, 99.9% trace metals basis

MDL Number

MFCD00003406

EC Number

244-438-2

Customs Code

28432900

FAQ

What are the physical and chemical properties of Silver(1+) sulfidosilver (CAS: 21548-73-2)?

Silver(1+) sulfidosilver is a crystalline compound with a molecular weight of approximately 227.73 g/mol. It has low solubility in water but is moderately soluble in dilute acids. It exhibits limited reactivity under normal conditions but can tarnish in the presence of sulfur compounds, leading to a blackening of the surface. This compound is typically synthesized by reducing silver ions with sulfide ions in an aqueous medium.

How is Silver(1+) sulfidosilver (CAS: 21548-73-2) typically synthesized?

Silver(1+) sulfidosilver is commonly synthesized by reducing silver nitrate with sodium sulfide in an aqueous solution. The reaction can be carried out at room temperature, and the yield is generally good. Catalysts such as ethylenediaminetetraacetic acid (EDTA) can be used to improve the selectivity of the reaction. The product is usually filtered and washed to remove any unreacted silver ions and sodium sulfide.

What industries use Silver(1+) sulfidosilver (CAS: 21548-73-2)?

Silver(1+) sulfidosilver is used in various industries, including pharmaceuticals, where it can act as a catalyst or a component in drug formulations. In the semiconductor industry, it is used in the production of certain types of electronic materials. It is also employed in the manufacturing of sensors and as a component in some polymer formulations.

What precautions should be taken when handling Silver(1+) sulfidosilver (CAS: 21548-73-2)?

When handling Silver(1+) sulfidosilver, it is important to wear appropriate personal protective equipment (PPE) such as gloves, safety goggles, and a lab coat. The compound should be stored in a cool, dry place away from direct sunlight and flammable materials. In case of a spill, it should be cleaned up using appropriate methods, and the area should be adequately ventilated. Always refer to the Safety Data Sheet (SDS) for detailed handling and emergency procedures.