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| Names | |
|---|---|
| IUPAC name
Dimercury diiodide
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| Other names
Mercury(I) iodide
Mercurous iodide Red mercury | |
| Identifiers | |
3D model (JSmol)
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| ChemSpider | |
| ECHA InfoCard | 100.035.811 |
| EC Number |
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PubChem CID
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| UNII | |
| UN number | 1638 |
CompTox Dashboard (EPA)
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| Properties | |
| Hg 2I 2 | |
| Molar mass | 654.99 g mol−1 |
| Appearance | Dark yellow, opaque crystals |
| Odor | Odourless |
| Density | 7.7 g mL−1 |
Solubility product (Ksp)
|
5.2×10−29[1] |
| −41.5·10−6 cm3/mol | |
| Thermochemistry | |
Std molar
entropy (S⦵298) |
241.47 J K−1 mol−1 |
Std enthalpy of
formation (ΔfH⦵298) |
−119.09 kJ mol−1 |
| Hazards | |
| GHS labelling: | |
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| Danger | |
| H300, H310, H330, H373, H410 | |
| P260, P273, P280, P284, P301+P310 | |
| Related compounds | |
Other anions
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Mercury(I) bromide Mercury(I) chloride Mercury(I) fluoride |
Related compounds
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Mercury(II) iodide |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Mercury(I) iodide is a chemical compound of mercury and iodine. The chemical formula is Hg2I2. It is photosensitive and decomposes easily to mercury and HgI2.
- ^ John Rumble (June 18, 2018). CRC Handbook of Chemistry and Physics (99 ed.). CRC Press. pp. 5–189. ISBN 978-1138561632.