Thulium(III) sulfate

Chemical compound From Wikipedia, the free encyclopedia

Thulium(III) sulfate is an inorganic compound of thulium, with the molecular formula Tm2(SO4)3.

Quick facts Identifiers, Properties ...
Thulium(III) sulfate
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.039.982 Edit this at Wikidata
EC Number
  • anhydrous: 243-996-4
  • octahydrate: 621-969-1
UNII
  • InChI=1S/3H2O4S.2Tm/c3*1-5(2,3)4;;/h3*(H2,1,2,3,4);;/q;;;2*+3/p-6
    Key: NEEAOWXTIOQDFM-UHFFFAOYSA-H
  • monohydrate: InChI=1S/3H2O4S.H2O.2Tm/c3*1-5(2,3)4;;;/h3*(H2,1,2,3,4);1H2;;/q;;;;2*+3/p-6
    Key: UHRIULLMPAUAOV-UHFFFAOYSA-H
  • octahydrate: InChI=1S/3H2O4S.8H2O.2Tm/c3*1-5(2,3)4;;;;;;;;;;/h3*(H2,1,2,3,4);8*1H2;;/q;;;;;;;;;;;2*+3/p-6
    Key: GPBYLGMJMIXKMU-UHFFFAOYSA-H
  • anhydrous: [O-]S(=O)(=O)[O-].[O-]S(=O)(=O)[O-].[O-]S(=O)(=O)[O-].[Tm+3].[Tm+3]
  • monohydrate: O.O=S(=O)([O-])[O-].O=S(=O)([O-])[O-].O=S(=O)([O-])[O-].[Tm+3].[Tm+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-].[Tm+3].[Tm+3]
Properties
Tm2(SO4)3
Molar mass 626.04 g·mol−1
Density 1.130 g/cm3 (25 °C)[1]
160.32 g/L (25 °C)[1]
Hazards[2]
GHS labelling:
GHS07: Exclamation mark
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).
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It has received little scientific attention as its solubility in water was only determined in 2023[1] despite the compound being known since at least 1911.[3][4]

Preparation

Thulium(III) oxide has been reported to react with strong acids with hydrochloric acid being explicitly mentioned.[5] Sulfuric acid is also a strong acid that forms sulfate salts.[6]

Tm2O3 + 3 H2SO4 → Tm2(SO4)3 + 3 H2O

Properties

Thulium sulfate can form an octahydrate.[7][8]

It can also be used as a dopant for e.g. lithium borate glass that contains copper nanoparticles in order to limit photo-darkening[9] or in thermoluminescent dosimeters.[10]

It undergoes ion exchange with barium bromate to yield thulium(III) bromate and barium sulfate which precipitates from the aqueous solution.[3]

Tm2(SO4)3 + 3 Ba(BrO3)2 → 2 Tm(BrO3)3 + 3 BaSO4↓

References

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