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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 |
Appearance | Very dark, "orange," opaque crystals |
Odor | Odourless |
Density | 9.8 g mL |
−76.3·10 cm/mol | |
Hazards | |
Occupational safety and health (OHS/OSH): | |
Main hazards
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highly toxic |
GHS labelling: | |
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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) |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C ※, 100 kPa).
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Chemical compound
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. Mercury(I) oxide is 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.
- ^ "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.