Potassium thiocyanate

Base Information

• Chemical Name: Potassium thiocyanate
• CAS No.: 333-20-0
• Molecular Formula: KCNS
• Molecular Weight: 97.182
• Hs Code.: 28380000
• Mol file: 333-20-0.mol

Synonyms:Arterocyn;Aterocyn;Potassium isothiocyanate;Thiocyanic acid, potassium salt (1:1);

Chemical Property of Potassium thiocyanate

Chemical Property:

• Appearance/Colour: white crystalline powder
• Vapor Pressure: 2700mmHg at 25°C
• Melting Point: 173 °C(lit.)
• Boiling Point: 500°C
• Flash Point: 500°C
• PSA: 49.09000
• Density: 1.886
• LogP: 0.66498
• Storage Temp.: Store at RT.
• Sensitive.: Hygroscopic
• Solubility.: H2O: 8 M at 20 °C, clear, colorless
• Water Solubility.: 2170 g/L (20 ºC)

Purity/Quality:

98% ^*data from raw suppliers

Potassium Thiocyanate, ACS ^*data from reagent suppliers

Safty Information:

• Pictogram(s): Xn, Xi
• Hazard Codes: Xn,Xi
• Statements: 32-52/53-20/21/22
• Safety Statements: 13-61-36/37-46

MSDS Files:

SDS file from LookChem

Total 1 MSDS from other Authors

Useful:

• Uses: It can be used in electroplating industry for stripping agent, it can also be used refrigerant. It can also be used in the dye industry, photographic industry, pesticides and steel analysis. Analysis of siliver ion; indirect determination of chloride, bromide, and iodide. manufacture of artificial mustard oil; printing and dyeing textiles; in photography as intensifier; in analytical chemistry. The sodium salt now is replacing it for most of these uses. Used as a source of thiocyanate. Potassium Thiocyanate has been used as a catalyst in a one-pot reaction of dialkyl acetylenedicarboxylates with indane-1,3-dione. Potassium Thiocyanate has been used as a selective bacterial inhibitor to create ESS-3 broth to allow co-?enrichment of the target pathogens and suppress growth of some non-?target pathogens
• Production method: The mothod of ammonium thiocyanate transformation which is the pressurized synthesis reaction of carbon disulfide and ammonia can generate ammonium thiocyanate and the by-product is ammonium hydrosulfide, and then by desulfurization, ammonium hydrosulfide can evaporate and remove which is decomposed into hydrogen sulfide, when potassium carbonate solution is added into the temperature of 105℃ liquid, it can generates potassium thiocyanate. The reaction process will produce large amount of carbon dioxide and ammonia. Ammonia is recyclable, the reaction solution is filtered to remove insoluble material, and then reduction vaporization is proceeded, and then cooling and crystallization, centrifugal separation is proceeded to obtain industrial potassium thiocyanate. CS2 + 3NH3 → NH4SCN + NH4HS NH4HS → NH3 ↑ + H2S ↑ 2NH4SCN + K2CO3 → 2KSCN + (NH4) 2CO3 (NH4) 2CO3 → 2NH3 ↑ + CO2 ↑ + H2O
• Physical properties: Colorless rhombohedral crystals; deliquesces; density 1.886 g/cm3at 15°C;melts at 173.2°C, the color of the fused salt changing from brown to green and then blue; turns white again on cooling; decomposes at about 500°C; very soluble in water, 177 g/100mL at 0°C and 217 g/100mL at 20°C; solution cools upon dissolution; aqueous solution neutral; readily dissolves in acetone and liquid ammonia; moderately soluble in hot alcohol.

Technology Process of Potassium thiocyanate

There total 132 articles about Potassium thiocyanate which guide to synthetic route it. The literature collected by LookChem mainly comes from the sharing of users and the free literature resources found by Internet computing technology. We keep the original model of the professional version of literature to make it easier and faster for users to retrieve and use. At the same time, we analyze and calculate the most feasible synthesis route with the highest yield for your reference as below:

synthetic route:

Reference yield: 99.0%

potassium cyanide → potassium thioacyanate (333-20-0)

Guidance literature:

With sulfur; In ethanol; for 3h; Reflux;

DOI:10.1002/anie.200800750

Reference yield:

C36H60O30*CNS(1-) → potassium thioacyanate (333-20-0) + alpha cyclodextrin (10016-20-3)

Guidance literature:

In water; at 25 ℃; Equilibrium constant; Thermodynamic data; partial molal volume change, atmospheric pressure;

DOI:10.1007/BF00649488

Reference yield:

potassium tetrarhodanoaurate(III) → potassium thioacyanate (333-20-0) + gold(III) chloride (13453-07-1)

Guidance literature:

decompn. over 100°C;

upstream raw materials:

dimethyltrisulfane

potassium cyanide

ethanedinitrile

CYANAMID

Downstream raw materials:

thirane

2-imino-1,3-dithiolane

2,2-dimethylthiirane

thiocyanato-acetic acid ethyl ester

Refernces

• 1、 Dixon,Taylor. "". . p. 975. Retrieved .
• 2、 Dyke, Alan M.,Gill, Duncan M.,Harvey, Jeremy N.,Hester, Alison J.,Lloyd-Jones, Guy C.,Munoz, M. Paz,Shepperson, Ian R.. "Decoupling deprotonation from metalation: Thia-fries rearrangement". supporting information; experimental part. p. 5067 - 5070. Retrieved 2009/03/11.
• 3、 Gǎnescu, Ion,Chirigiu, Liviu,Mureseanu, Mihaela,Traistǎ, Eugen. "New Substitution Products of K3[Cr(SCN)6] with some Higher Aliphatic Monoamines". . p. 129 - 131. Retrieved 2008/10/09.