Mercury(I) oxide

Mercury(I) oxide
Identifiers
CAS Number	15829-53-5 [1];
3D model (JSmol)	Interactive image; Interactive image;
ChemSpider	17615579 ;
ECHA InfoCard	100.036.289
EC Number	239-934-0;
PubChem CID	16683011;
UNII	0I308SWC92 ;
CompTox Dashboard (EPA)	DTXSID3065954 ;
	InChI InChI=1S/2Hg.O Key: RPZHFKHTXCZXQV-UHFFFAOYSA-N [1];
	SMILES O1[Hg][Hg]1; [O-2].[Hg+][Hg+];
Properties
Chemical formula	Hg2O
Molar mass	417.183 g·mol−1
Appearance	Very dark, orange, opaque crystals
Odor	Odourless
Density	9.8 g mL−1
Magnetic susceptibility (χ)	−76.3·10−6 cm3/mol
Hazards
Main hazards	highly toxic
EU classification (DSD) (outdated)	T+ Xn N
NFPA 704 (fire diamond)	0 4 1
	Lethal dose or concentration (LD, LC):
LD50 (median dose)	18 mg/kg (oral, rat)[2]
	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

Mercury(I) oxide, also known as mercurous oxide, is an inorganic metal oxide with the chemical formula Hg₂O.

It is a brown/black powder, insoluble in water, toxic but without taste or smell. It is chemically unstable and converts to mercury(II) oxide and mercury metal.

References

Chambers, Michael. "ChemIDplus - 15829-53-5 - RPZHFKHTXCZXQV-UHFFFAOYSA-N - Mercurous oxide - Similar structures search, synonyms, formulas, resource links, and other chemical information". Chem.nlm.nih.gov. Retrieved 2 April 2019.

[auto-1] Chambers, Michael. "ChemIDplus - 15829-53-5 - RPZHFKHTXCZXQV-UHFFFAOYSA-N - Mercurous oxide - Similar structures search, synonyms, formulas, resource links, and other chemical information". Chem.nlm.nih.gov. Retrieved 2 April 2019.