Mercury(I) nitrate
| Mercury(I) nitrate[1][2] | |
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Mercury(I) nitrate |
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Other names
Mercurous nitrate |
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| Identifiers | |
| CAS number | 10415-75-5, (anhydrous) [7782-86-7] (dihydrate) |
| Properties | |
| Molecular formula | Hg2(NO3)2 (anhydrous) Hg2(NO3)2·2H2O (dihydrate) |
| Molar mass | 525.19 g/mol (anhydrous) 561.22 g/mol (dihydrate) |
| Appearance | white monoclinic crystals (anhydrous) colorless crystals (dihydrate) |
| Density | ? g/cm3 (anhydrous) 4.8 g/cm3 (dihydrate) |
| Melting point |
? (anhydrous) |
| Solubility in water | slightly soluble, reacts |
| Hazards | |
| NFPA 704 |
 1
3
1
OX
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| Related compounds | |
| Other anions | Mercury(I) fluoride Mercury(I) chloride Mercury(I) bromide Mercury(I) iodide |
| Other cations | Mercury(II) nitrate |
 (verify) (what is:  / ?)Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) |
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| Infobox references | |
Mercury(I) nitrate is a chemical compound with the formula Hg2(NO3)2. It is used in the preparation of other mercury(I) compounds, and, like all other mercury compounds, it is toxic.
[edit] Reactions
Mercury(I) nitrate is formed when elemental mercury is combined with dilute nitric acid (concentrated nitric acid will yield mercury(II) nitrate). Mercury(I) nitrate is a reducing agent which is oxidized upon contact with air.
Solutions of mercury(I) nitrate are acidic due to slow reaction with water:
- Hg2(NO3)2 + H2O → Hg2(NO3)(OH) + HNO3
Hg2(NO3)(OH) forms a yellow precipitate.
If the solution is boiled or exposed to light, mercury(I) nitrate undergoes a disproportionation reaction yielding elemental mercury and mercury(II) nitrate[2]:
- 2Hg2(NO3)2 → Hg + Hg(NO3)2
[edit] References
- ^ Lide, David R. (1998), Handbook of Chemistry and Physics (87 ed.), Boca Raton, FL: CRC Press, pp. 4–45, ISBN 0849305942
- ^ a b Patnaik, Pradyot (2003), Handbook of Inorganic Chemical Compounds, McGraw-Hill Professional, pp. 573, ISBN 0070494398, http://books.google.com/?id=Xqj-TTzkvTEC&pg=PA552&dq=%22Manganese%28II%29+acetate%22, retrieved 2009-07-20
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