Silver cyanide
40 grams of silver cyanide on a scale. | |
| Names | |
|---|---|
| IUPAC name
Silver cyanide | |
| Other names
Argentous cyanide | |
| Identifiers | |
3D model (JSmol) |
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| ChemSpider | |
| ECHA InfoCard | 100.007.317 |
| EC Number |
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PubChem CID |
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| RTECS number |
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| UNII | |
| UN number | 1684 |
CompTox Dashboard (EPA) |
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| Properties | |
| AgCN | |
| Molar mass | 133.8856 g/mol |
| Appearance | colorless, gray (impure) crystals |
| Odor | odorless |
| Density | 3.943 g/cm3 |
| Melting point | 335 °C (635 °F; 608 K) (decomposes) |
| 0.000023 g/100 mL (20 °C) | |
Solubility product (Ksp) |
5.97×10−17 |
| Solubility | soluble in concentrated ammonia, boiling nitric acid, ammonium hydroxide, KCN insoluble in alcohol, dilute acid |
| −43.2·10−6 cm3/mol | |
Refractive index (nD) |
1.685 |
| Structure | |
| hexagonal | |
| linear | |
| Thermochemistry | |
Std molar entropy (S⦵298) |
84 J·mol−1·K−1 |
Std enthalpy of formation (ΔfH⦵298) |
146 kJ·mol−1 |
| Hazards | |
| Occupational safety and health (OHS/OSH): | |
Main hazards |
toxic |
| GHS labelling: | |
| Danger | |
| H290, H300, H310, H315, H318, H330, H410 | |
| P234, P260, P262, P264, P270, P271, P273, P280, P284, P301+P310, P302+P350, P302+P352, P304+P340, P305+P351+P338, P310, P320, P321, P322, P330, P332+P313, P361, P362, P363, P390, P391, P403+P233, P404, P405, P501 | |
| NFPA 704 (fire diamond) | |
| Flash point | 320 °C (608 °F; 593 K) |
| Lethal dose or concentration (LD, LC): | |
LD50 (median dose) |
123 mg/kg (oral, rat) |
| Related compounds | |
Other anions |
AgCl |
Other cations |
NaCN Copper(I) cyanide |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references | |
Silver cyanide is the chemical compound with the formula AgCN. It is a white salt that is precipitated upon treatment of solutions containing Ag+ with cyanide, which is used in some schemes to recover silver from solution. Silver cyanide is used in silver-plating.