Difference between revisions of "Mercury(II) oxide"
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===Physical=== | ===Physical=== | ||
| − | Mercury(II) oxide is a dense red or orange solid, insoluble in water | + | Mercury(II) oxide is a dense red or orange solid, insoluble in water and organic solvents. |
==Availability== | ==Availability== | ||
Revision as of 16:37, 15 September 2017
| Names | |
|---|---|
| IUPAC name
Mercury(II) oxide
| |
| Other names
Mercuric oxide
Montroydite Red mercuric oxide Red mercury | |
| Properties | |
| HgO | |
| Molar mass | 216.59 g/mol |
| Appearance | Yellow or red solid |
| Odor | Odorless |
| Density | 11.14 g/cm3 |
| Melting point | 500 °C (932 °F; 773 K) (decomposes) |
| Boiling point | Decomposes |
| 0.0053 g/100 ml (25 °C) 0.0395 g/100 ml (100 °C) | |
| Solubility | Reacts with acids Insoluble in acetone, alcohols, ammonia, ethers, |
| Thermochemistry | |
| Std molar
entropy (S |
70 J·mol−1·K−1 |
| Std enthalpy of
formation (ΔfH |
−90 kJ/mol |
| Hazards | |
| Safety data sheet | Sigma-Aldrich |
| Lethal dose or concentration (LD, LC): | |
| LD50 (Median dose)
|
18 mg/kg (rat, oral) |
| Related compounds | |
| Related compounds
|
Zinc oxide |
| Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
| Infobox references | |
Mercury(II) oxide, or mercuric oxide is a red or orange solid, with the formula HgO.
Contents
Properties
Chemical
Mercury oxide will react with many acids to give mercury salts.
Physical
Mercury(II) oxide is a dense red or orange solid, insoluble in water and organic solvents.
Availability
Mercuric oxide can be found in the cathode of old mercury batteries.
Mercury oxide can be bought from chemical suppliers, though it's not easy to get hold of.
Mercury and mercury compounds cannot be freely acquired in EU.
Preparation
Mercuric oxide can be made via pyrolysis of mercury(II) nitrate below 500 °C.
Projects
- Make mercury(II) chloride
- Make elemental mercury
Handling
Safety
Mercury(II) oxide is extremely toxic. Ingestion may be fatal.
Storage
In closed glass or plastic bottles, away from acids.
Disposal
Mercury(II) oxide should be converted to an insoluble mercury compound, such as mercury sulfide, then taken to hazardous waste disposal centers.
