| | Mercurous oxide，black Basic information |
| Product Name: | Mercurous oxide，black | | Synonyms: | Mercurous oxide，black;Mercury(Ⅰ)oxide;mercury(Ⅰ)oxidde;MERCURIOUS OXIDE (BLACK);acc.Hahnemann;Mercury(I) oxide;Mercury oxide (Hg2O);Mercurio(I)oxymercury(I) | | CAS: | 15829-53-5 | | MF: | Hg2O | | MW: | 417.1794 | | EINECS: | 239-934-0 | | Product Categories: | Inorganics | | Mol File: | 15829-53-5.mol |  |
| | Mercurous oxide，black Chemical Properties |
| Melting point | decomposes at 100℃ [HAW93] | | density | 9.8 | | form | prob mixture of HgO+Hg | | Water Solubility | insoluble H2O; soluble HNO3; reacts with HCl to form calomel, Hg2Cl2 [MER06] | | EPA Substance Registry System | Mercury oxide (Hg2O) (15829-53-5) |
| | Mercurous oxide，black Usage And Synthesis |
| Chemical Properties | Black powder.Soluble in acids; insoluble in water. | | General Description | Black or brownish-black powder. Not a true compound but rather an intimate mixture of metallic mercury and mercuric oxide. Insoluble in water and denser than water (density 9.8 g / cm3). Hence sinks in water. | | Air & Water Reactions | Insoluble in water. | | Reactivity Profile | Mixtures of "Mercurous oxide，black" with barium oxide react vigorously with hydrogen sulfide in air. Explosions may result [Mellor 10:140. 1946-47]. Dissolves in nitric acid. Reacts with hydrochloric acid to give insoluble mercurous chloride (calomel). Contact of the metal oxide caused the explosive decomposition of hydrogen peroxide [Bretherick 5th ed., 1995]. Mixtures with phosphorus or sulfur explode by impact and friction respectively, [Mellor, 1940, Vol. 4, 77]. | | Hazard | Highly toxic. | | Health Hazard | Highly toxic, may be fatal if inhaled, swallowed or absorbed through skin. Avoid any skin contact. Effects of contact or inhalation may be delayed. Fire may produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may be corrosive and/or toxic and cause pollution. | | Fire Hazard | Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes. Containers may explode when heated. Runoff may pollute waterways. | | Safety Profile | A poison. Flammable
by chemical reaction; an oxiduer. Explosive
reaction with hydrogen peroxide, chlorine +
ethylene. Reacts violently with molten
potassium, molten sodmm, S, (HzS + BaO
+ air). Forms explosive mixtures with
nonmetals [e.g., phosphorus (impactsensitive), sulfur (friction-sensitive)].
Incompatible with alkali metals, reducing
materials. Dangerous; when heated to
decomposition it emits highly toxic fumes of
Hg. See also MERCURY COMPOUNDS,
INORGANIC. |
| | Mercurous oxide，black Preparation Products And Raw materials |
|
