Mercury(I) oxide
Appearance
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Identifiers | |
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3D model (JSmol)
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ChemSpider | |
ECHA InfoCard | 100.036.289 |
EC Number |
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PubChem CID
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UNII | |
UN number | 1641 |
CompTox Dashboard (EPA)
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Properties | |
Hg2O | |
Molar mass | 417.183 g·mol−1 |
Appearance | Very dark, orange, opaque crystals |
Odor | Odourless |
Density | 9.8 g mL−1 |
−76.3·10−6 cm3/mol | |
Hazards | |
Occupational safety and health (OHS/OSH): | |
Main hazards
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highly toxic |
GHS labelling:[3] | |
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Danger | |
H315, H317, H320, H335, H341, H361, H370, H372 | |
P201, P202, P260, P261, P264, P270, P271, P272, P280, P281, P302+P352, P304+P340, P305+P351+P338, P307+P311, P308+P313, P312, P314, P321, P332+P313, P333+P313, P337+P313, P362, P363, P403+P233, P405, P501 | |
NFPA 704 (fire diamond) | |
Lethal dose or concentration (LD, LC): | |
LD50 (median dose)
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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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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 but soluble in nitric acid. With hydrochloric acid, it reacts to form calomel, Hg2Cl2.[4] Mercury(I) oxide is toxic but without taste or smell. It is chemically unstable and converts to mercury(II) oxide and mercury metal.
References
[edit]- ^ a b 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.
- ^ "Mercuric oxide MSDS". sciencelab.com. Archived from the original on 2012-10-11.
- ^ "Mercury(I) oxide". pubchem.ncbi.nlm.nih.gov. Retrieved 23 December 2021.
- ^ Perry, Dale L. (2011). Handbook of Inorganic Compounds (2nd ed.). Boca Raton: Taylor & Francis. p. 270. ISBN 978-1-4398-1461-1. OCLC 587104373.