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Chemical compound From Wikipedia, the free encyclopedia
Nickel(II) selenate is a selenate of nickel with the chemical formula NiSeO4.
Identifiers | |
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3D model (JSmol) |
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ChemSpider | |
ECHA InfoCard | 100.035.554 |
EC Number |
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PubChem CID |
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CompTox Dashboard (EPA) |
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Properties | |
NiSeO4 | |
Molar mass | 201.64 |
Appearance | green solid[1] |
Density | 4.8 g·cm−3[2] 2.314 g·cm−3 (hexahydrate)[3] |
Hazards | |
GHS labelling:[4] | |
Danger | |
H317, H334, H341, H350i, H360D, H372, H410 | |
P203, P233, P260, P261, P264, P270, P271, P272, P273, P280, P284, P302+P352, P304+P340, P318, P319, P321, P333+P317, P342+P316, P362+P364, P391, P403, P405, P501 | |
Related compounds | |
Other anions |
nickel(II) sulfate |
Other cations |
iron(II) selenate cobalt(II) selenate |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Nickel(II) selenate can be produced by the reaction of nickel(II) carbonate and selenic acid.[5]
Nickel(II) selenate hexahydrate is a green solid.[1] It is tetragonal, space group P41212 (No. 92).[6] At 100 °C, nickel(II) selenate hexahydrate slowly loses water to the tetrahydrate, with space group P21/n (No. 14). At 510 °C, nickel(II) selenate decomposes directly into nickel selenite, which on further heating decomposes into nickel oxide and selenium dioxide.[7][2]
It and potassium selenate are cooled and crystallized in hot aqueous solution to obtain the blue-green [Ni(H2O)6](SeO4)2.[8]
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