Indium(III) sulfate

Indium(III) sulfate (In2(SO4)3) is a sulfate salt of the metal indium. It is a sesquisulfate, meaning that the sulfate group occurs 11/2 times as much as the metal. It may be formed by the reaction of indium, its oxide, or its carbonate with sulfuric acid. An excess of strong acid is required, otherwise insoluble basic salts are formed. As a solid indium sulfate can be anhydrous, or take the form of a pentahydrate with five water molecules or a nonahydrate with nine molecules of water. Indium sulfate is used in the production of indium or indium containing substances. Indium sulfate also can be found in basic salts, acidic salts or double salts including indium alum.

Indium(III) sulfate
Names
Other names
Indium sulfate
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.033.340
EC Number
  • 236-689-1
PubChem CID
RTECS number
  • NL1925000
UNII
  • InChI=1S/2In.3H2O4S/c;;3*1-5(2,3)4/h;;3*(H2,1,2,3,4)/q2*+3;;;/p-6 Y
    Key: XGCKLPDYTQRDTR-UHFFFAOYSA-H Y
  • InChI=1/2In.3H2O4S/c;;3*1-5(2,3)4/h;;3*(H2,1,2,3,4)/q2*+3;;;/p-6
    Key: XGCKLPDYTQRDTR-CYFPFDDLAA
SMILES
  • [In+3].[In+3].[O-]S(=O)(=O)[O-].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O
Properties
In2(SO4)3
Molar mass 517.81 g/mol
Appearance white-gray odorless powder, hygroscopic, monoclinic crystals
Density 3.44 g/cm3, solid
Melting point decomposes at 600 °C
soluble, (539.2 g/L at 20 °C)
Structure
monoclinic (room temperature)
Space group
 P121
a = 8.57 Å, b = 8.908 Å, c = 14.66 Å
α = 90°, β = 124.72°, γ = 90°
Structure
rhombohedral
Space group
 R-3
a = 8.44 Å, b = 8.44 Å, c = 23.093 Å
α = 90°, β = 90°, γ = 120°
6 formula per cell
Thermochemistry
0.129
Hazards
GHS labelling:
Warning
H315, H319, H335
P261, P264, P271, P280, P302+P352, P304+P340, P305+P351+P338, P312, P321, P332+P313, P337+P313, P362, P403+P233, P405, P501
NFPA 704 (fire diamond)
2
0
0
Threshold limit value (TLV)
 0.1 (TWA), 0.3 (STEL)
NIOSH (US health exposure limits):
PEL (Permissible)
 0.1
Safety data sheet (SDS) tttmetalpowder
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references
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