Outline Solubility in water (g / 100ml) Reference quality standards Chemical properties Uses Production method
ChemicalBook > CAS DataBase List > Potassium thiocyanate

Potassium thiocyanate

Outline Solubility in water (g / 100ml) Reference quality standards Chemical properties Uses Production method
Product Name
Potassium thiocyanate
CAS No.
333-20-0
Chemical Name
Potassium thiocyanate
Synonyms
POTASSIUM ISOTHIOCYANATE;Product Description;Rhocya;Arterocyn;Potassium thiocyanide;Rodanca;Kyonate;Aterocyn;Thio-cara;Rhodanide
CBNumber
CB8853514
Molecular Formula
CKNS
Formula Weight
97.18
MOL File
333-20-0.mol
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Potassium thiocyanate Property

Melting point:
173 °C (lit.)
Boiling point:
500°C
Density 
1.886
vapor pressure 
<0.001 hPa (20 °C)
Flash point:
500°C
storage temp. 
Store at +5°C to +30°C.
solubility 
H2O: 8 M at 20 °C, clear, colorless
form 
Liquid
color 
colorless or white
Specific Gravity
1.886
Odor
Odorless
PH Range
5.3 - 8.7 at 97.2 g/l at 25 °C
PH
5.3-8.7 (25℃, 50mg/mL in H2O)
Water Solubility 
2170 g/L (20 ºC)
Sensitive 
Hygroscopic
Merck 
14,7691
BRN 
3594799
Exposure limits
NIOSH: IDLH 25 mg/m3
Stability:
Stable. Incompatible with nitric acid, strong oxidizing agents, active halogen compounds.
LogP
0.58
CAS DataBase Reference
333-20-0(CAS DataBase Reference)
NIST Chemistry Reference
Potassium thiocyanate(333-20-0)
EPA Substance Registry System
Potassium thiocyanate (333-20-0)
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Safety

Hazard Codes 
Xn,Xi
Risk Statements 
32-52/53-20/21/22
Safety Statements 
13-61-36/37-46
WGK Germany 
1
RTECS 
XL1925000
Hazard Note 
Irritant/Hygroscopic
TSCA 
Yes
HS Code 
28380000
Toxicity
LD50 orally in mice, rats: 594, 854 mg/kg, Andersen, Chen, J. Am. Pharm. Assoc. 29, 152 (1940)
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Danger
Hazard statements

H318Causes serious eye damage

H412Harmful to aquatic life with long lasting effects

Precautionary statements

P273Avoid release to the environment.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P301+P312IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
73059
Product name
Potassium thiocyanate solution
Purity
volumetric, 8?M KSCN
Packaging
100ML
Price
$92.9
Updated
2024/03/01
Sigma-Aldrich
Product number
207799
Product name
Potassium thiocyanate
Purity
ACS reagent, ≥99.0%
Packaging
100g
Price
$74.5
Updated
2024/03/01
Sigma-Aldrich
Product number
73059
Product name
Potassium thiocyanate solution
Purity
volumetric, 8?M KSCN
Packaging
500ML
Price
$327
Updated
2024/03/01
Sigma-Aldrich
Product number
207799
Product name
Potassium thiocyanate
Purity
ACS reagent, ≥99.0%
Packaging
2.5kg
Price
$541
Updated
2024/03/01
Sigma-Aldrich
Product number
1.05125
Product name
Potassium thiocyanate
Purity
for analysis EMSURE? ACS,ISO,Reag. Ph Eur
Packaging
250g
Price
$208
Updated
2024/03/01
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Potassium thiocyanate Chemical Properties,Usage,Production

Outline

Potassium thiocyanate, molecular formula is KSCN, it is also known as KSCN, English is Potassium Thiocyanate, it is colorless monoclinic crystal. The relative density is 1.886. Melting point is about 172.3 ℃. It is soluble in water and it can cool because of the absorption of heat, it is also soluble in alcohol (ethanol) and acetone. Crystalline hemihydrate (KSCN.0.5H2O) can be obtained at low temperature, it is steady at-29-6.8℃, and it can turn blue when be broiled at about 430℃, but it then re-becomes colorless when be colded. When be heated to 500℃, it can decompose. The blood red ferric thiocyanate complex ion FeSCN2 + (iron thiocyanate) can generate in case of Fe3 + (ferric), which is the sensitive method to test the Fe3 + ion, the method can eliminate the influence of all other known metal ions. And it can not react with ferrous salts. It is hygroscopic, and it should be sealed. It has low toxicity. But potassium cyanate is highly toxic substances, the country has limited its production.

Solubility in water (g / 100ml)

The grams which dissolved in per 100 ml of water at different temperatures (℃) :
177g/0 ℃; 198g/10 ℃; 224g/20 ℃; 255g/30 ℃; 289g/40 ℃
372g/60 ℃; 492g/80 ℃; 571g/90 ℃; 675g/100 ℃

Reference quality standards


Chemical properties

It is colorless monoclinic crystal. It is soluble in water, and it can cool because of the absorption of heat. It is also soluble in alcohol and acetone.
The above information is edited by the chemicalbook of Wang Xiaodong.

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.

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

Chemical Properties

Potassium thiocyanate, potassium sulfocyanide, potassium sulfocyanate, potassium rhodanate, KCNS, white solid, formed by fusing potassium cyanide and sulfur, and then crystallizing.

Chemical Properties

Potassium thiocyanate, KSCN,also known as potassium sulfocyanate and potassium rhodanide, is a colorless deliquescent crystalline solid that melts at 173°C (343 OF) and decomposes at 500°C(932 OF). Soluble in water and alcohol,it has no odor and a saline taste.Potassium thiocyanate is used in printing and dyeing textiles, freezing mixtures, manufacturing chemicals, photography and medicine.

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.

Uses

Used as a source of thiocyanate.

Uses

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

Uses

Analysis of siliver ion; indirect determination of chloride, bromide, and iodide.

Uses

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.

Definition

ChEBI: A potassium salt which is the monopotassium salt of thiocyanic acid.

Preparation

Potassium thiocyanate may be made by adding caustic potash to a solution of ammonium thiocyanate, followed by evaporation of the solution. NH4SCN + KOH →KSCN + NH4OH
Also, the compound can be prepared by heating potassium cyanide with sulfur:KCN + S →KSCN.

Definition

A colorless hygroscopic solid. Its solution is used in a test for iron(III) compounds, with which it turns a blood-red color.

General Description

Potassium thiocyanate is an inorganic potassium salt. Phase transitions in potassium thiocyanate (KSCN) have been investigated by X-ray diffraction studies. The order-disorder type transition with respect to the orientation of the thiocyanate ions was identified. Its polarized infrared spectrum has been reported. It participates in the ring-opening of aziridines. The reaction was carried out in the presence of sulfated zirconia to afford the corresponding β-aminothiocyanates.

Hazard

Toxic by ingestion.

Flammability and Explosibility

Non flammable

Safety Profile

A human poison by ingestion. Poison experimentally by intravenous route. An experimental teratogen. Moderately toxic by subcutaneous and ingestion routes. Large doses can cause slun eruptions, psychoses, and collapse. Incompatible with calcium chlorite and perchloryl fluoride. When heated to decomposition it emits very toxic fumes of CN-, K2O, SOx, and NOx. See also THIOCYANATES.

Purification Methods

Crystallise it from H2O if much chloride ion is present in the salt, otherwise from EtOH or MeOH (optionally by addition of Et2O). Filter off on a Büchner funnel without paper, and dry it in a desiccator at room temperature before heating for 1hour at 150o, with a final 10-20minutes at 200o to remove the last traces of solvent [Kolthoff & Lingane J Am Chem Soc 57 126 1935]. Store it in the dark.

Potassium thiocyanate Preparation Products And Raw materials

Raw materials

Hydrogen Sulfide Ammonium hydrogen sulfide 4-Chlorobenzaldehyde Carbon dioxide Ammonium thiocyanate Carbon disulfide Desulfurization Ammonia

Preparation Products

nitric acid pickling inhibitor LAN-5 1-METHYL-1H-IMIDAZOLE-5-CARBOXALDEHYDE INTERFERON ALPHA RECOMBINANT RAT Ethyl imidazole-4-carboxylate Carbimazole Rhodanine-3-acetic acid 1-(1-NAPHTHYL)-2-THIOUREA 2-MERCAPTOIMIDAZOLE 4-PHENYLIMIDAZOLE (2,6-Diisopropyl-4-Phenoxy)Phenylthiourea Methyl thiocyanate Allyl isothiocyanate CEFTRIAXONE interferon-gamma-1a Methimazole 4-Imidazolemethanol hydrochloride 4-BROMOPHENYLTHIOUREA
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View Lastest Price from Potassium thiocyanate manufacturers

HebeiShuoshengImportandExportco.,Ltd
Product
Potassium thiocyanate 333-20-0
Price
US $6.00/kg
Min. Order
1kg
Purity
99%
Supply Ability
2000KG/Month
Release date
2024-08-06
Hebei Longbang Technology Co., Ltd
Product
Potassium thiocyanate 333-20-0
Price
US $6.00/KG
Min. Order
1KG
Purity
99%
Supply Ability
20TONS
Release date
2024-05-15
Hebei Weibang Biotechnology Co., Ltd
Product
Potassium thiocyanate 333-20-0
Price
US $1.00/kg
Min. Order
1kg
Purity
99%
Supply Ability
10 mt
Release date
2024-11-13

333-20-0, Potassium thiocyanateRelated Search:

DL-α-Tocopherol Sodium thiocyanate Potassium persulfate Potassium iodide Potassium Citrate Potassium sorbate Potassium lactate Potassium chloride Potassium Acetate Guanidine thiocyanate Diphenolic acid 4-(Diethylamino)salicylaldehyde 5-Chlorovaleric acid Pralmorelin Sodium hydrosulfide Ammonium thiocyanate Potassium tartrate Potassium tert-butoxide Potassium Thiocyanate Solution

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