Mercury(I) sulfate

Mercury(I) sulfate
Names
	IUPAC name Mercury(I) sulfate
	Other names Mercurous sulfate
Identifiers
CAS Number	7783-36-0 ;
3D model (JSmol)	Interactive image;
ChemSpider	22951 ;
ECHA InfoCard	100.029.084
EC Number	231-993-0;
PubChem CID	24545;
UNII	PI950N9DYS ;
CompTox Dashboard (EPA)	DTXSID9074565 ;
	InChI InChI=1S/2Hg.H2O4S/c;;1-5(2,3)4/h;;(H2,1,2,3,4)/q2*+1;/p-2 Key: MINVSWONZWKMDC-UHFFFAOYSA-L ;
	SMILES [O-]S(=O)(=O)[O-].[Hg+][Hg+];
Properties
Chemical formula	Hg2SO4
Molar mass	497.24 g/mol
Appearance	whitish-yellow crystals
Density	7.56 g/cm3
Solubility in water	0.051 g/100 mL (25 °C) ; 0.09 g/100 mL (100 °C)
Solubility product (Ksp)	6.5×10−7
Solubility	soluble in dilute nitric acid, Insoluble in water, Soluble in hot sulfuric acid.
Magnetic susceptibility (χ)	−123.0·10−6 cm3/mol
Structure
Coordination geometry	monoclinic
Thermochemistry
Heat capacity (C)	132 J·mol−1·K−1
Std molar; entropy (S⦵298)	200.7 J·mol−1·K−1
Std enthalpy of; formation (ΔfH⦵298)	-743.1 kJ·mol−1
Related compounds
Other anions	Mercury(I) fluoride; Mercury(I) chloride; Mercury(I) bromide; Mercury(I) iodide
Other cations	Mercury(II) sulfate; Cadmium sulfate; Thallium(I) sulfate
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Mercury(I) sulfate, commonly called mercurous sulphate (UK) or mercurous sulfate (US) is the chemical compound Hg₂SO₄.^[3] Mercury(I) sulfate is a metallic compound that is a white, pale yellow or beige powder.^[4] It is a metallic salt of sulfuric acid formed by replacing both hydrogen atoms with mercury(I). It is highly toxic; it could be fatal if inhaled, ingested, or absorbed by skin.

^ John Rumble (June 18, 2018). CRC Handbook of Chemistry and Physics (99 ed.). CRC Press. pp. 5–189. ISBN 978-1-138-56163-2.
^ Lide, David R. (1998), Handbook of Chemistry and Physics (87 ed.), Boca Raton, FL: CRC Press, pp. 5–19, ISBN 0-8493-0594-2
^ Intermediate Inorganic Chemistry by J. W. Mellor, published by Longmans, Green and Company, London, 1941, page 388
^ "Mercurous Sulfate | 7783-36-0".

[crc-1] John Rumble (June 18, 2018). CRC Handbook of Chemistry and Physics (99 ed.). CRC Press. pp. 5–189. ISBN 978-1-138-56163-2.

[hand2-2] Lide, David R. (1998), Handbook of Chemistry and Physics (87 ed.), Boca Raton, FL: CRC Press, pp. 5–19, ISBN 0-8493-0594-2

[3] Intermediate Inorganic Chemistry by J. W. Mellor, published by Longmans, Green and Company, London, 1941, page 388

[4] "Mercurous Sulfate | 7783-36-0".

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