Mercury (I) sulphate

Structural formula
General
Surname	Mercury (I) sulphate
Molecular formula	Hg 2 SO 4
Brief description	white to yellowish solid that turns gray when exposed to light
External identifiers / databases
EC number	231-993-0
ECHA InfoCard	100,029,084
PubChem	24545
ChemSpider	29303914
Wikidata	Q417095
properties
Molar mass	497.24 g mol −1
Physical state	firmly
density	7.56 g cm −3
solubility	good at nitric acid ; very heavy in water (0.6 g l −1 at 25 ° C);
safety instructions
H and P phrases	H: 300 + 310 + 330-373-410
	P: 260-262-280-301 + 330 + 331-302 + 352-304 + 340-310
Toxicological data	205 mg kg −1 ( LD 50 , rat , oral )
	As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Mercury (I) sulfate is a chemical compound of the heavy metal mercury with the empirical formula Hg ₂ SO ₄ . It occurs less frequently than mercury (II) sulfate .

Extraction and presentation

Mercury (I) sulfate can be obtained, similar to the preparation of mercury (I) chloride, by reacting a solution of mercury (I) nitrate dihydrate with sulfuric acid.

{\ displaystyle \ mathrm {Hg_ {2} (NO_ {3}) _ {2} \ + \ H_ {2} SO_ {4} \ rightarrow \ Hg_ {2} SO_ {4} \ downarrow + \ 2 \ HNO_ { 3}}}

properties

Mercury (I) sulfate is in the form of white-yellow crystals, which are readily soluble in nitric acid and not very soluble in sulfuric acid. It has a monoclinic crystal structure with the space group P 2 ₁ / c (space group no. 14) and the lattice parameters a = 6.277 Å , b = 4.429 Å, c = 8.360 Å and β = 91.70 °. It turns gray when exposed to light. Template: room group / 14

use

Mercury (I) sulfate was used in the area of galvanic cells such as the Clark normal element or the Weston normal element .

Individual evidence

↑ ^a ^b ^c ^d ^e ^f ^g Entry on mercury (I) sulphate in the GESTIS substance database of the IFA , accessed on January 10, 2017(JavaScript required) .
↑ David R. Lide: Handbook of Chemistry and Physics. 87th edition, CRC Press, 1998, ISBN 0-8493-0594-2 , pp. 4 to 69.
↑ Not explicitly listed in Regulation (EC) No. 1272/2008 (CLP) , but with the specified labeling falls under the group entry inorganic compounds of mercury with the exception of mercuric sulphide and those specified elsewhere in this Annex in the Classification and Labeling Inventory of European Chemicals Agency (ECHA), accessed on February 1, 2016. Manufacturers or distributors can expand the harmonized classification and labeling .
^ JW Mellor: Intermediate Inorganic Chemistry. Longmans Green and Company, London 1941, p. 388.
↑ Cynthia G. Zoski: Handbook of Electrochemistry . ISBN 978-0-444-51958-0 .
↑ M. Weil: Crystal structure of Hg ₂ SO ₄ - a redetermination. In: Acta Crystallographica , E70, 2014, p. I44, doi: 10.1107 / S1600536814011155 .
^ Arnold Willmes: Taschenbuch Chemical Substances , ISBN 978-3-8171-1787-1 .

[GESTIS-1] ↑ ^a ^b ^c ^d ^e ^f ^g Entry on mercury (I) sulphate in the GESTIS substance database of the IFA , accessed on January 10, 2017(JavaScript required) .

[hand-2] David R. Lide: Handbook of Chemistry and Physics. 87th edition, CRC Press, 1998, ISBN 0-8493-0594-2 , pp. 4 to 69.

[CLP_100.240.785-3] Not explicitly listed in Regulation (EC) No. 1272/2008 (CLP) , but with the specified labeling falls under the group entry inorganic compounds of mercury with the exception of mercuric sulphide and those specified elsewhere in this Annex in the Classification and Labeling Inventory of European Chemicals Agency (ECHA), accessed on February 1, 2016. Manufacturers or distributors can expand the harmonized classification and labeling .

[mellor-4] JW Mellor: Intermediate Inorganic Chemistry. Longmans Green and Company, London 1941, p. 388.

[5] Cynthia G. Zoski: Handbook of Electrochemistry . ISBN 978-0-444-51958-0 .

[6] M. Weil: Crystal structure of Hg ₂ SO ₄ - a redetermination. In: Acta Crystallographica , E70, 2014, p. I44, doi: 10.1107 / S1600536814011155 .

[7] Arnold Willmes: Taschenbuch Chemical Substances , ISBN 978-3-8171-1787-1 .