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Silver thiocyanate

Silver thiocyanate
Skeletal formula of silver thiocyanate
Ball-and-stick model of silver thiocyanate
Names
IUPAC name
Silver(I) thiocyanate, Silver thiocyanate
Other names
Thiocyanic acid, silver (1+) thiocyanate; Silver isothiocyanate; Silver sulphocyanide
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.015.395
EC Number 216-934-9
PubChem CID
UNII
UN number 3077
Properties
AgSCN
Appearance Colorless crystals
Odor Odorless
Melting point 170 °C (338 °F; 443 K)
decomposes
0.14 mg/L (19.96 °C)
0.25 mg/L (21 °C)
6.68 mg/L (100 °C)
1.03·10−12
Solubility Insoluble in acids (reacts) except when concentrated, acetates, aq. nitrates
Solubility in silver nitrate 43.2 mg/L (25.2 °C, 3 nAgNO3/H2O)
Solubility in sulfur dioxide 14 mg/kg (0 °C)
Solubility in methanol 0.0022 mg/kg
−6.18·10−5 cm3/mol
Structure
Monoclinic, mS32 (293 K)
C2/c, No. 15 (293 K)
2/m (293 K)
a = 8.792(5) Å, b = 7.998(5) Å, c = 8.207(5) Å (293 K)
α = 90°, β = 93.75(1)°, γ = 90°
Thermochemistry
63 J/mol·K
131 J/mol·K
88 kJ/mol
Hazards
GHS pictograms The exclamation-mark pictogram in the Globally Harmonized System of Classification and Labelling of Chemicals (GHS)The environment pictogram in the Globally Harmonized System of Classification and Labelling of Chemicals (GHS)
GHS signal word Warning
H302, H312, H332, H410
P273, P280, P501
NFPA 704
Flammability code 0: Will not burn. E.g., water Health code 2: Intense or continued but not chronic exposure could cause temporary incapacitation or possible residual injury. E.g., chloroform Reactivity code 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g., liquid nitrogen Special hazards (white): no codeNFPA 704 four-colored diamond
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Silver thiocyanate is a silver salt of thiocyanic acid with the formula AgSCN.

AgSCN is monoclinic with 8 molecules in the cell. The SCN− groups has an almost linear molecular geometry, with bond angle 179.6(5)°. Weak Ag—Ag interactions length are 0.3249(2) nm to 0.3338(2) nm which forming one-dimensional zig-zag chain in AgSCN.

Silver thiocyanate is produced by the reaction between silver nitrate and potassium thiocyanate.


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