Silver(I,III) oxide
Chemical compound / From Wikipedia, the free encyclopedia
Silver(I,III) oxide or tetrasilver tetroxide is the inorganic compound with the formula Ag4O4. It is a component of silver zinc batteries. It can be prepared by the slow addition of a silver(I) salt to a persulfate solution e.g. AgNO3 to a Na2S2O8 solution.[1] It adopts an unusual structure, being a mixed-valence compound.[2] It is a dark brown solid that decomposes with evolution of O2 in water. It dissolves in concentrated nitric acid to give brown solutions containing the Ag2+ ion.[3]
Quick Facts Names, Identifiers ...
Ag(I) Ag(III) O | |
Names | |
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IUPAC name
silver(I,III) Oxide | |
Other names
tetrasilver tetroxide, silver peroxide, argentic oxide, silver suboxide, divasil | |
Identifiers | |
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3D model (JSmol) |
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ECHA InfoCard | 100.013.726 |
EC Number |
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PubChem CID |
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UNII | |
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Properties | |
Ag4O4 Ag2O.Ag2O3 | |
Molar mass | 123.87 g/mol |
Appearance | grey-black powder diamagnetic |
Density | 7.48 g/cm3 |
Melting point | >100 °C, decomposition |
.0027 g/100 mL | |
Solubility | soluble in alkalis |
Hazards | |
GHS labelling: | |
Danger | |
H272, H315, H319, H335 | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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