Europium(III) sulfate

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Europium(III) sulfate
Eu-sulfate.jpg
Names
IUPAC name
Europium(III) sulfate
Other names
  • Dieuropium(3+) trisulphate
  • Europic sulfate
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.033.534 OOjs UI icon edit-ltr-progressive.svg
EC Number
  • 236-903-3
  • octahydrate:680-960-0
PubChem CID
  • InChI=1S/2Eu.3H2O4S/c;;3*1-5(2,3)4/h;;3*(H2,1,2,3,4)/q2*+3;;;/p-6
    Key: FBUHTUYBHREGEH-UHFFFAOYSA-H
  • octahydrate:InChI=1S/2Eu.3H2O4S.8H2O/c;;3*1-5(2,3)4;;;;;;;;/h;;3*(H2,1,2,3,4);8*1H2/q2*+3;;;;;;;;;;;/p-6
    Key: PGDXJFDXKJLVTJ-UHFFFAOYSA-H
  • [O-]S(=O)(=O)[O-].[O-]S(=O)(=O)[O-].[O-]S(=O)(=O)[O-].[Eu+3].[Eu+3]
  • octahydrate:O.O.O.O.O.O.O.O.[O-]S(=O)(=O)[O-].[O-]S(=O)(=O)[O-].[O-]S(=O)(=O)[O-].[Eu+3].[Eu+3]
Properties
Eu2(SO4)3
Molar mass 592.10 g·mol−1
Appearancelight pink (anhydrous) [1]
white (octahydrate) [1]
Density 4.99 g/cm3 [1]
0.021 g/mL (20°C) [1]
Structure [2]
monoclinic
C2/c
a = 21.2787 Å, b = 6.6322 Å, c = 6.8334 Å
Hazards
GHS labelling:
GHS-pictogram-exclam.svg
Warning
H315, H319, H335
P261, P264, P264+P265, P271, P280, P302+P352, P304+P340, P305+P351+P338, P319, P321, P332+P317, P337+P317, P362+P364, P403+P233, P405, P501
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Europium(III) sulfate is a europium compound with the chemical formula Eu2(SO4)3·nH2O (n = 0, 1, 4, or 8). [3] It is a light pink crystalline solid, [1] stable in air up to 670 °C. [2] The octahydrate dehydrates to the anhydrous form at 375 °C. [1]

Contents

Preparation

Europium(III) sulfate can be prepared by reacting europium(III) oxide with sulfuric acid: [1]

Eu2O3 + 3 H2SO4 → Eu2(SO4)3 + 3 H2O

It can also be precipitated from a solution of europium(III) nitrate upon the addition of sulfuric acid: [2]

2 Eu(NO3)3 + 3 H2SO4 → Eu2(SO4)3 + 6 HNO3

Reactions

Europium(III) sulfate can be reduced to europium(II) sulfate with hydrogen gas at 480-500 °C. [4] At temperatures between 600-1000 °C an oxysulfide (Eu2O2S) forms instead. [4]

References

  1. 1 2 3 4 5 6 7 Perry, Dale L. (2016-04-19). Handbook of Inorganic Compounds. CRC Press. p. 168. ISBN   978-1-4398-1462-8.
  2. 1 2 3 Denisenko, Yu. G.; Aleksandrovsky, A. S.; Atuchin, V. V.; Krylov, A. S.; Molokeev, M. S.; Oreshonkov, A. S.; Shestakov, N. P.; Andreev, O. V. (2018-12-25). "Exploration of structural, thermal and spectroscopic properties of self-activated sulfate Eu2(SO4)3 with isolated SO4 groups". Journal of Industrial and Engineering Chemistry. 68: 109–116. doi:10.1016/j.jiec.2018.07.034. ISSN   1226-086X.
  3. ↑ Denisenko, Yu. G.; Khritokhin, N. A.; Andreev, O. V.; Basova, S. A.; Sal’nikova, E. I.; Polkovnikov, A. A. (2017-11-01). "Thermal decomposition of europium sulfates Eu2(SO4)3·8H2O and EuSO4". Journal of Solid State Chemistry. 255: 219–224. doi:10.1016/j.jssc.2017.08.020. ISSN   0022-4596.
  4. 1 2 Andreev, O. V.; Denisenko, Yu. G.; Sal’nikova, E. I.; Khritokhin, N. A.; Zyryanova, K. S. (2016-03-01). "Specifics of reactions of cerium sulfate and europium sulfate with hydrogen". Russian Journal of Inorganic Chemistry. 61 (3): 296–301. doi:10.1134/S0036023616030025. ISSN   1531-8613.
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