Mercury(I) oxide

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Mercury(I) oxide
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.036.289
EC Number 239-934-0
Properties
Hg2O
Molar mass 417.18 g·mol−1
Appearance Very dark, orange, opaque crystals
Odor Odourless
Density 9.8 g mL−1
−76.3·10−6 cm3/mol
Hazards
Main hazards highly toxic
Very Toxic T+Harmful XnDangerous for the Environment (Nature) N
NFPA 704
Flammability code 0: Will not burn. E.g., waterHealth code 4: Very short exposure could cause death or major residual injury. E.g., VX gasReactivity code 1: Normally stable, but can become unstable at elevated temperatures and pressures. E.g., calciumSpecial hazards (white): no codeNFPA 704 four-colored diamond
0
4
1
Lethal dose or concentration (LD, LC):
18 mg/kg (oral, rat)[3]
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[edit]