Cadmium selenate
 
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3D model (JSmol)
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| ChemSpider | |
| ECHA InfoCard | 100.034.060 |
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PubChem CID
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CompTox Dashboard (EPA)
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| Properties | |
| CdO4Se | |
| Molar mass | 255.381 g·mol−1 |
| Appearance | colourless solid (dihydrate)[1] |
| Density | 3.62 g·cm−3 (dihydrate)[2] |
| Melting point | 100 °C (dihydrate decomposes)[2] |
| 70.5 g·l−1 [2] | |
| Hazards | |
| GHS labelling:[3] | |
  
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| Warning | |
| H301, H331, H373, H410 | |
| P260, P261, P264, P270, P271, P273, P301+P316, P304+P340, P316, P319, P321, P330, P391, P403+P233, P405, P501 | |
| Related compounds | |
Other anions
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cadmium sulfate cadmium selenite |
Other cations
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zinc selenate mercury 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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Cadmium selenate is a selenate of cadmium, with the chemical formula CdSeO4.
Preparation
[edit]Cadmium selenate can be formed by the reaction of cadmium oxide and selenic acid. The product is a mixture of monohydrate and dihydrate.[4]
- CdO + H2SeO4 → CdSeO4 + H2O
Properties
[edit]Cadmium selenate dihydrate is a colorless solid. At 100 °C, the dihydrate releases water of crystallization to form cadmium selenate monohydrate.[1] The monohydrate is monoclinic with space group P21/c (no. 14),[4] while the dihydrate is orthorhombic, with space group Pbca (no. 61).[5]
References
[edit]- ^ a b R. J. Meyer (2013), Cadmium System-Nummer 33, Springer-Verlag, p. 133, ISBN 978-3-662-11295-3
- ^ a b c William M. Haynes (2016), CRC Handbook of Chemistry and Physics, 94th Edition, CRC Press, p. 54, ISBN 978-1-4665-7115-0
- ^ "Cadmium selenate". pubchem.ncbi.nlm.nih.gov.
- ^ a b Stålhandske, C. (1981-11-15). "Structure of cadmium selenate monohydrate". Acta Crystallographica Section B Structural Crystallography and Crystal Chemistry. 37 (11): 2055–2057. Bibcode:1981AcCrB..37.2055S. doi:10.1107/S0567740881007942.
- ^ H.U.v. Vogel (2013), Chemiker-Kalender, Springer-Verlag, p. 78, ISBN 978-3-662-06237-1