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Common NameMercuric oxide
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中文通用名氧化汞
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IUPACmercury(II) oxide
or
mercury(2+) oxide
or
mercuric oxide -
CASmercury oxide (HgO)
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CAS No.21908-53-2
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Molecular FormulaHgO
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Molecular Structure
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Category
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ActivityFungicide, wound protectant
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Physical PropertiesMolecular weight:216.6; Physical form:Orange-red to bright red powder (yellow when finely divided). Melting point:Decomposes at c. 500 °C; Solubility:In water 53 mg/l (25 °C). Insoluble in organic solvents. Soluble in dilute acids, forming the corresponding mercury salts.; Stability:Decomposes on exposure to light. Darkens at c. 400 °C and decomposes into mercury and oxygen at c. 500 °C.;
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Toxicology(Rat): Oral LD50 18 mg/kg.Extremely poisonous orally to all animals.
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Environmental ProfileEcotoxicology:
Fish:Toxic to fish. -
Transport InformationSignal Word:DANGER; Hazard Class:Ib(Highly hazardous)
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