Mercury(I) carbonate

Mercury(I) carbonate
Names
	IUPAC name Mercury(I) carbonate
	Other names Mercurous carbonate;
Identifiers
CAS Number	6824-78-8;
3D model (JSmol)	Interactive image;
ChemSpider	129549488;
PubChem CID	87545972;
	InChI InChI=1S/CH2O3.2Hg/c2-1(3)4;;/h(H2,2,3,4);;/q;2*+1/p-2 Key: OFLBFFWZLSHZSP-UHFFFAOYSA-L;
	SMILES C(=O)([O-])[O-].[Hg+].[Hg+];
Properties
Chemical formula	Hg2CO3
Molar mass	461.19 g/mol
Appearance	White to yellowish-brown solid
Melting point	Decomposes 130 °C (266 °F; 403 K)
Solubility in water	Practically insoluble in water and ethanol
Solubility	Soluble in aqueous ammonium chloride solution
Hazards
	Occupational safety and health (OHS/OSH):
Main hazards	Highly toxic; dangerous for the environment
	GHS labelling:
Hazard statements	H300, H310, H330, H373, H410
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Mercury(I) carbonate is a chemical compound of mercury belonging to the group of carbonates.

Preparation

Mercury(I) carbonate is formed by precipitation of potassium carbonate or sodium carbonate with mercury(I) nitrate. A dirty white precipitate is produced, which soon turns black in the presence of excess precipitating agent, especially upon heating.^[3]

Hg₂(NO₃)₂ + K₂CO₃ → Hg₂CO₃ + 2 KNO₃

Properties

Mercury(I) carbonate is a white to yellowish-brown solid. It is practically insoluble in water and ethanol,^[2] but soluble in aqueous ammonium chloride solution.^[1] The compound decomposes at approximately 130 °C.^[1]

References

^ ^a ^b ^c ^d Blachnik, R. (2013). Taschenbuch für Chemiker und Physiker, Volume 3: Elements, Inorganic Compounds and Materials, Minerals. Springer-Verlag. p. 480. ISBN 978-3-642-58842-6.
^ ^a ^b ^c Haynes, William M. (2016). CRC Handbook of Chemistry and Physics (97th ed.). CRC Press. p. 98. ISBN 978-1-4987-5429-3.
^ Schmidt, Ernst; Gadamer, Johannes (2013). Anleitung zur Qualitativen Analyse. Springer-Verlag. p. 32. ISBN 978-3-662-29375-1.

[Blachnik2013-1] Blachnik, R. (2013). Taschenbuch für Chemiker und Physiker, Volume 3: Elements, Inorganic Compounds and Materials, Minerals. Springer-Verlag. p. 480. ISBN 978-3-642-58842-6.

[Haynes2016-2] Haynes, William M. (2016). CRC Handbook of Chemistry and Physics (97th ed.). CRC Press. p. 98. ISBN 978-1-4987-5429-3.

[SchmidtGadamer2013-3] Schmidt, Ernst; Gadamer, Johannes (2013). Anleitung zur Qualitativen Analyse. Springer-Verlag. p. 32. ISBN 978-3-662-29375-1.

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