Bismuth(III) sulfate

Bismuth(III) sulfate

Names
Systematic IUPAC name Dibismuth trisulfate
Other names Bismuth trisulfate
Identifiers
CAS Number	7787-68-0
3D model ( JSmol )	Interactive image
ChemSpider	171500
ECHA InfoCard	100.029.208
EC Number	232-129-5
PubChem CID	198144
UNII	68FE11533K
CompTox Dashboard (EPA)	DTXSID10188121
InChI InChI=1S/2Bi.3H2O4S/c;;3*1-5(2,3)4/h;;3*(H2,1,2,3,4)/q2*+3;;;/p-6 Key: BEQZMQXCOWIHRY-UHFFFAOYSA-H
SMILES [O-]S(=O)(=O)[O-].[O-]S(=O)(=O)[O-].[O-]S(=O)(=O)[O-].[Bi+3].[Bi+3]
Properties
Chemical formula	Bi2(SO4)3
Molar mass	706.15 g/mol
Appearance	White solid
Density	5.31 g/cm3[1]
Melting point	465 °C (869 °F; 738 K)[2] (decomposes)
Solubility in water	Hydrolysis
Structure[1]
Crystal structure	monoclinic
Space group	P21/n
Lattice constant	a = 13.08 Å, b = 4.73 Å, c = 14.52 Å α = 90°, β = 100.9°, γ = 90°
Formula units (Z)	4
Hazards
GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H315, H319, H335
Precautionary statements	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
NFPA 704 (fire diamond)	0 0 0
Related compounds
Other anions	Bismuth(III) nitrate
Other cations	Antimony(III) sulfate
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Bismuth(III) sulfate is an

Bismuth(III) sulfate is most commonly produced from the reaction of bismuth(III) nitrate and sulfuric acid:

2 Bi(NO₃)₃ + 3 H₂SO₄ → Bi₂(SO₄)₃ + 6 HNO₃

Another polymorph of bismuth(III) sulfate can be produced by the treatment of lithium bismuthate(III) with sulfuric acid.^[3]

Properties

Bismuth(III) sulfate decomposes at 465 °C to Bi₂O(SO₄)₂. If continually heated, it decomposes to various bismuth oxysulfates and at 950 °C it decomposes to bismuth(III) oxide. Bismuth(III) sulfate hydrolyzes in water.^[1][2]

References