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Chemical compound From Wikipedia, the free encyclopedia
Indium(III) nitrate is a nitrate salt of indium which forms various hydrates. Only the pentahydrate has been crystallographically verified. Other hydrates are also reported in literature, such as the trihydrate.[1][2][3]
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3D model (JSmol) |
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ChemSpider | |
ECHA InfoCard | 100.033.979 |
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Properties | |
In(NO3)3 | |
Molar mass | 300.83 g/mol |
Appearance | White solid |
Density | 2.43 g/cm3 (pentahydrate)[1] |
Melting point | 100 °C (212 °F; 373 K) (decomposes, hydrate) |
Soluble | |
Structure[1] | |
Monoclinic | |
C2/c | |
a = 10.35 Å, b = 9.17 Å, c = 11.25 Å α = 90°, β = 91.05°, γ = 90° | |
Lattice volume (V) |
1068 Å3 |
Hazards | |
GHS labelling: | |
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H272, H315, H319, H335 | |
P210, P220, P221, P261, P264, P271, P280, P302+P352, P304+P340, P305+P351+P338, P312, P321, P332+P313, P337+P313, P362, P370+P378, P403+P233, P405, P501 | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Indium(III) nitrate hydrate is produced by the dissolution of indium metal in concentrated nitric acid followed by evaporation of the solution:[1][2][3]
The hydrate first decomposes to a basic salt and then to indium(III) oxide at 240 °C. Anhydrous indium(III) nitrate is claimed to be produced by the reaction of anhydrous indium(III) chloride and dinitrogen pentoxide.[2][4]
In the presence of excess nitrate ions, indium(III) nitrate converts to the [In(NO3)4]− ion.[1][2]
The hydrolysis of indium(III) nitrate yields indium(III) hydroxide. It also reacts with sodium tungstate to form In(OH)WO4, [In(OH)2]2WO4, NaInWO4 or In2(WO4)3 depending on pH.[5][6]
Only the pentahydrate has been structurally elucidated. The pentahydrate consists of octahedral [In(NO3)(H2O)5]2+ centers as well as two nitrates and is monoclinic.[1]
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