Silver cyanide

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.

Silver cyanide

  Ag   C/N
Names
IUPAC name
Silver cyanide
Other names
Argentous cyanide
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.007.317
EC Number
  • 208-048-6
RTECS number
  • VW3850000
UNII
UN number 1684
  • InChI=1S/CN.Ag/c1-2;/q-1;+1 Y
    Key: LFAGQMCIGQNPJG-UHFFFAOYSA-N Y
  • InChI=1/CN.Ag/c1-2;/q-1;+1
    Key: LFAGQMCIGQNPJG-UHFFFAOYAM
  • [C-]#N.[Ag+]
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)
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
1.685
Structure
hexagonal
linear
Thermochemistry
84 J·mol−1·K−1
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)
3
1
1
Flash point 320 °C (608 °F; 593 K)
Lethal dose or concentration (LD, LC):
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).
N verify (what is YN ?)
Infobox references
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