Ammonium selenate

Last updated
Ammonium selenate
Names
IUPAC name
diazanium;selenate
Other names
Diammonium selenate
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.029.077 OOjs UI icon edit-ltr-progressive.svg
EC Number
  • 231-985-7
PubChem CID
UNII
  • InChI=1S/H8N2O4Se/c1-5-7(3,4)6-2/h1-2H4
    Key: HSQMXXJIBPJBCG-UHFFFAOYSA-N
  • [NH4+].[NH4+].[O-][Se](=O)(=O)[O-]
Properties
H8N2O4Se
Molar mass 179.045 g·mol−1
Appearancewhite crystals
Density 2.194 g/cm3
soluble
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Ammonium selenate is a chemical compound with the chemical formula (NH4)2O4Se. [1] [2]

Contents

Synthesis

Synthesis is via a reaction of selenic acid with an excess of ammonium hydroxide. [3]

It may also be formed by the effect of an ammonia solution on a solution of selenic acid:

2NH3 + H2SeO4 → (NH4)2SeO4

Physical properties

Ammonium selenate forms white crystals of monoclinic system, spatial group C2/m, cell parameters a = 12.152, b = 6.418, c = 7.711, β = 115.5° Z = 4 and density 2.190 Mgm−3. [4]

It is easily soluble in water. [5] Soluble in EtOH and acetone. [6]

References

  1. "Ammonium selenate". NIST . Retrieved 4 February 2025.
  2. Specific Gravities, Boiling Points, and Melting Points: First Supplement to Part I. Smithsonian Institution. 1876. p. 18. Retrieved 4 February 2025.
  3. Satya, Prakash (2013). Advanced Chemistry of Rare Elements. S. Chand Publishing. p. 300. ISBN   978-81-219-4254-6 . Retrieved 4 February 2025.
  4. Carter, R. L.; Koerntgen, C.; Margulis, T. N. (15 February 1977). "Ammonium selenate" . Acta Crystallographica Section B: Structural Crystallography and Crystal Chemistry . 33 (2): 592–593. doi:10.1107/S0567740877004208. ISSN   0567-7408 . Retrieved 4 February 2025.
  5. Comey, Arthur Messenger (1896). A Dictionary of Chemical Solubilities Inorganic: xx, 515 p. Macmillan & Company. p. 351. Retrieved 4 February 2025.
  6. "MatWeb - The Online Materials Information Resource". matweb.com. Retrieved 4 February 2025.