Names | |
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Other names
Mercuric thiocyanate
Mercuric sulfocyanate | |
Identifiers | |
3D model (JSmol)
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ECHA InfoCard | 100.008.886 |
EC Number |
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PubChem CID
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UNII | |
CompTox Dashboard (EPA)
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Properties | |
Hg(SCN)2 | |
Molar mass | 316.755 g/mol |
Appearance | White monoclinic powder |
Odor | odorless |
Density | 3.71 g/cm3, solid |
Melting point | 165 °C (329 °F; 438 K) (decomposes) |
0.069 g/100 mL | |
Solubility | Soluble in dilute hydrochloric acid, KCN, ammonia slightly soluble in alcohol, ether |
−96.5·10−6 cm3/mol | |
Hazards | |
Occupational safety and health (OHS/OSH): | |
Main hazards
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highly toxic |
GHS labelling:[1] | |
Danger | |
H300, H310, H330, H373, H410 | |
P260, P262, P270, P271, P273, P280, P284, P301+P316, P302+P352, P304+P340, P316, P319, P320, P321, P330, P361, P364, P391, P403+P233, P405, P501 | |
NFPA 704 (fire diamond) | |
Lethal dose or concentration (LD, LC): | |
LD50 (median dose)
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46 mg/kg (rat, oral) |
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(II) thiocyanate (Hg(SCN)2) is an inorganic chemical compound, the coordination complex of Hg2+ and the thiocyanate anion. It is a white powder. It will produce a large, winding "snake" when ignited, an effect known as the Pharaoh's serpent.[2]