Uranyl_oxalate

Uranyl oxalate

Uranyl oxalate

Chemical compound

Uranyl oxalate (UO2C2O4) is a pale yellow powdered uranyl salt. It is often encountered in industrial nuclear processes at both the front and back-end of the nuclear fuel cycle. Due to its hygroscopicity, uranyl oxalate rarely exists in the dehydrated state and is usually instead found in the trihydrate form (UO2C2O4·3H2O) at room temperature.[1] At room temperature, the powder exhibits a monoclinic crystal structure in the P21/c space group.[2]

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Production

Uranyl oxalate trihydrate can be produced by the reaction of uranyl nitrate hexahydrate with oxalic acid.[3]

Uranyl oxalate has been used in actinometers.[4]

References

  1. [1]
    Thompson, Nathan B. A.; Stennett, Martin C.; Gilbert, Matthew R.; Hyatt, Neil C. (2021-01-06). "Nuclear forensic signatures and structural analysis of uranyl oxalate, its products of thermal decomposition and Fe impurity dopant". Journal of Radioanalytical and Nuclear Chemistry. 327 (2): 957–973. doi:10.1007/s10967-020-07538-2. ISSN 0236-5731.
  2. [2]
    Jayadevan, N. C.; Chackraburtty, D. M. (1972-11-15). "The crystal and molecular structure of uranyl oxalate trihydrate". Acta Crystallographica Section B: Structural Crystallography and Crystal Chemistry. 28 (11): 3178–3182. Bibcode:1972AcCrB..28.3178J. doi:10.1107/s0567740872007691. ISSN 0567-7408.
  3. [3]
    Tel, H; Bülbül, M; Eral, M; Altaş, Y (November 1999). "Preparation and characterization of uranyl oxalate powders". Journal of Nuclear Materials. 275 (2): 146–150. Bibcode:1999JNuM..275..146T. doi:10.1016/s0022-3115(99)00119-1. ISSN 0022-3115.
  4. [4]
    Bryce-Smith, D. (1971). Photochemistry. Royal Society of Chemistry. p. 279. ISBN 978-0-85186-015-2.
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