Potassium thiocyanate CAS 333-20-0
Introduction：Basic information about Potassium thiocyanate CAS 333-20-0, including its chemical name, molecular formula, synonyms, physicochemical properties, and safety information, etc.
Potassium thiocyanate Basic informationOutline Solubility in water (g / 100ml) Reference quality standards Chemical properties Uses Production method
| Product Name: | Potassium thiocyanate |
| Synonyms: | Arterocyn;Aterocyn;Kyonate;Potassium thiocyanide;potassiumthiocyanide;Rhocya;Rhodanide;Rodanca |
| CAS: | 333-20-0 |
| MF: | CKNS |
| MW: | 97.18 |
| EINECS: | 206-370-1 |
| Product Categories: | fine chemicals;inorganic compound;Inorganics;333-20-0 |
| Mol File: | 333-20-0.mol |
Potassium thiocyanate Chemical Properties
| Melting point | 173 °C (lit.) |
| Boiling point | 500°C |
| density | 1.886 |
| bulk density | 750-1000kg/m3 |
| vapor pressure | <0.001 hPa (20 °C) |
| Fp | 500°C |
| storage temp. | Store at +5°C to +30°C. |
| solubility | H2O: 8 M at 20 °C, clear, colorless |
| form | Liquid |
| Specific Gravity | 1.886 |
| color | colorless or white |
| PH | 5.3-8.7 (25℃, 50mg/mL in H2O) |
| Odor | Odorless |
| PH Range | 5.3 - 8.7 at 97.2 g/l at 25 °C |
| 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. |
| Cosmetics Ingredients Functions | LIGHT STABILIZER |
| InChI | 1S/CHNS.K/c2-1-3;/h3H;/q;+1/p-1 |
| InChIKey | ZNNZYHKDIALBAK-UHFFFAOYSA-M |
| SMILES | [K]SC#N |
| 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) |
| Absorption | cut-off at 274nm in H2O at 8M |
Safety Information
| 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 | TSCA listed |
| HS Code | 28380000 |
| Storage Class | 13 - Non Combustible Solids |
| Hazard Classifications | Acute Tox. 4 Dermal Acute Tox. 4 Inhalation Acute Tox. 4 Oral Aquatic Chronic 3 Eye Dam. 1 |
| Toxicity | LD50 orally in mice, rats: 594, 854 mg/kg, Andersen, Chen, J. Am. Pharm. Assoc. 29, 152 (1940) |
| 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 hygroscopicsolid. Its solution is used in a test foriron(III) compounds, with which it turns ablood-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 byingestion. Poison experimentally by intravenous route. An experimentalteratogen. Moderately toxic by subcutaneousand ingestion routes. Large doses can causeslun eruptions, psychoses, and collapse.Incompatible with calcium chlorite andperchloryl fluoride. When heated todecomposition it emits very toxic fumes ofCN-, K2O, SOx, and NOx. See alsoTHIOCYANATES. |
| 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 | Ammonia-->Carbon dioxide-->Carbon disulfide-->4-Chlorobenzaldehyde-->Hydrogen Sulfide-->Ammonium thiocyanate-->Ammonium hydrogen sulfide |
| Preparation Products | Allyl isothiocyanate-->CEFTRIAXONE-->4-Imidazolemethanol hydrochloride-->Rhodanine-3-acetic acid-->Ethyl imidazole-4-carboxylate-->1-METHYL-1H-IMIDAZOLE-5-CARBOXALDEHYDE-->1-(1-NAPHTHYL)-2-THIOUREA-->4-BROMOPHENYLTHIOUREA-->Carbimazole-->4-PHENYLIMIDAZOLE-->Methimazole-->interferon-gamma-1a-->2-MERCAPTOIMIDAZOLE-->INTERFERON ALPHA RECOMBINANT RAT-->(2,6-Diisopropyl-4-Phenoxy)Phenylthiourea-->Methyl thiocyanate-->nitric acid pickling inhibitor LAN-5-->ETHYLENE SULFIDE |
