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[1]
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.015.395 Edit this at Wikidata
EC Number
  • 216-934-9
UNII
UN number 3077
  • InChI=1S/CHNS.Ag/c2-1-3;/h3H;/q;+1/p-1 checkY[inchi]
    Key: RHUVFRWZKMEWNS-UHFFFAOYSA-M checkY[inchi]
  • C(#N)[S-].[Ag+]
Properties
AgSCN
Appearance Colorless crystals
Odor Odorless
Melting point 170 °C (338 °F; 443 K)
decomposes[4]
0.14 mg/L (19.96 °C)
0.25 mg/L (21 °C)
6.68 mg/L (100 °C)[1]
1.03·10−12[2]
Solubility Insoluble in acids (reacts)[3] except when concentrated, acetates, aq. nitrates[1]
Solubility in silver nitrate 43.2 mg/L (25.2 °C, 3 nAgNO3/H2O)[1]
Solubility in sulfur dioxide 14 mg/kg (0 °C)[4]
Solubility in methanol 0.0022 mg/kg[4]
−6.18·10−5 cm3/mol[2]
Structure
Monoclinic, mS32 (293 K)[5]
C2/c, No. 15 (293 K)[5]
2/m (293 K)[5]
a = 8.792(5) Å, b = 7.998(5) Å, c = 8.207(5) Å (293 K)[5]
α = 90°, β = 93.75(1)°, γ = 90°
8
Thermochemistry
63 J/mol·K[4]
131 J/mol·K[4]
88 kJ/mol[4]
Hazards
GHS labelling:
GHS07: Exclamation markGHS09: Environmental hazard[3]
Warning
H302, H312, H332, H410[3]
P273, P280, P501[3]
NFPA 704 (fire diamond)
NFPA 704 four-colored diamondHealth 2: Intense or continued but not chronic exposure could cause temporary incapacitation or possible residual injury. E.g. chloroformFlammability 0: Will not burn. E.g. waterInstability 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g. liquid nitrogenSpecial hazards (white): no code
2
0
0
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Silver thiocyanate is the silver salt of thiocyanic acid with the formula AgSCN. Silver thiocyanate appears as a white crystalline powder. It is very commonly used in the synthesis of silver nanoparticles. Additionally, studies have found silver nanoparticles to be present in saliva present during the entire digestive process of silver nitrate. Silver thiocyanate is slightly soluble in water, with a solubility of 1.68 x 10−4 g/L.[6] It is insoluble in ethanol, acetone, and acid.[7]

  1. ^ a b c d Comey, Arthur Messinger; Hahn, Dorothy A. (February 1921). A Dictionary of Chemical Solubilities: Inorganic (2nd ed.). New York: The MacMillan Company. p. 884.
  2. ^ a b Lide, David R., ed. (2009). CRC Handbook of Chemistry and Physics (90th ed.). Boca Raton, Florida: CRC Press. ISBN 978-1-4200-9084-0.
  3. ^ a b c d Sigma-Aldrich Co., Silver thiocyanate. Retrieved on 2014-07-19.
  4. ^ a b c d e f Anatolievich, Kiper Ruslan. "silver thiocyanate". chemister.ru. Retrieved 2014-07-19.
  5. ^ a b c d Zhu, H.-L.; Liu, G.-F.; Meng, F.-J. (2003). "Refinement of the crystal structure of silver(I) thiocyanate, AgSCN". Zeitschrift für Kristallographie – New Crystal Structures. 218 (JG). München: Oldenbourg Wissenschaftsverlag GmbH: 263–264. doi:10.1524/ncrs.2003.218.jg.285. ISSN 2197-4578.
  6. ^ Kästner, Claudia; Lampen, Alfonso; Thünemann, Andreas F. (2018-02-22). "What happens to the silver ions? – Silver thiocyanate nanoparticle formation in an artificial digestion". Nanoscale. 10 (8): 3650–3653. doi:10.1039/C7NR08851E. ISSN 2040-3372. PMID 29431819.
  7. ^ "SILVER THIOCYANATE | 1701-93-5". ChemicalBook. Retrieved 2023-11-20.