Thiocyanic acid
- CAS No.
- 463-56-9
- Chemical Name:
- Thiocyanic acid
- Synonyms
- HSCN;Thiocyanic acid;Sulfocyanic acid;hydrogen thiocyanate
- CBNumber:
- CB4852524
- Molecular Formula:
- CHNS
Lewis structure
- Molecular Weight:
- 59.09
- MDL Number:
- MOL File:
- 463-56-9.mol
Melting point | -110 °C |
---|---|
Boiling point | -87.78°C (estimate) |
Density | 1.228 (estimate) |
refractive index | 1.4640 (estimate) |
pka | 0.93±0.10(Predicted) |
PH | pKa1= –0.87(25℃) |
LogP | 0.429 (est) |
EWG's Food Scores | 1 |
FDA UNII | A5KWW7N91V |
EPA Substance Registry System | Thiocyanic acid (463-56-9) |
SAFETY
Risk and Safety Statements
Symbol(GHS) | GHS07 |
---|---|
Signal word | Warning |
Hazard statements | H302-H312-H332-H412 |
Precautionary statements | P264-P270-P301+P312-P330-P501-P280-P302+P352-P312-P322-P363-P501-P261-P271-P304+P340-P312-P273-P501 |
Hazard Codes | Xn |
Risk Statements | 20/21/22-32-52/53 |
Safety Statements | 13-61 |
Thiocyanic acid price
Manufacturer | Product number | Product description | CAS number | Packaging | Price | Updated | Buy |
---|---|---|---|---|---|---|---|
American Custom Chemicals Corporation | CHM0143174 | THIOCYANIC ACID 95.00% | 463-56-9 | 5ML | $455 | 2021-12-16 | Buy |
American Custom Chemicals Corporation | CHM0143174 | THIOCYANIC ACID 95.00% | 463-56-9 | 100ML | $1525.83 | 2021-12-16 | Buy |
Thiocyanic acid Chemical Properties,Uses,Production
Chemical Properties
White substance with an enamel luster. M.p. —110°C. Polymerizes between —90 and —85°C to a white crystalline mass. Converts with careful heating in vacuum to bright-yellow, ether-soluble thiocyanuric acid [(HNCS)3?], which readily dissocates into HNCS. If either HNCS or the yellow form is heated at room temperature without evacuation, the material slowly turns dark red, both in the presence and in the absence of air. At about +3°C, a rapid exothermic reaction occurs. The entire mass foams and coalesces into a slurry. Miscible with water in all proportions. Dilute solutions (<5%) are stable. Very strong acid.
Definition
ChEBI: A hydracid that is cyanic acid in which the oxygen is replaced by a sulfur atom.
Definition
thiocyanic acid: An unstable gas, HSCN.
Synthesis
A mixture of KNCS and KHSO4 is ground together as finely as
possible and allowed to stand for 3-4 weeks over P3OS. Then
flask a of an apparatus is successively charged (the order of addition should be maintained)
with 250 g. of glass beads (6-7 mm. in diameter), 100 g. of KNCS
alternated with beads, then a covering layer of glass beads, then
the required amount of KHSO4 mixed with glass beads. Without
disturbing these layers, the glass flask is mounted in a rigid
support and joined on one side of the horizontal tube p via a ground
glass spray trap / . The other ground glass joint of a is closed off
with a cap.
KNCS + KHSO4 = K2SO4 + HNCS
Thiocyanic acid Preparation Products And Raw materials
Raw materials
Preparation Products
Supplier | Tel | Country | ProdList | Advantage | |
---|---|---|---|---|---|
Mainchem Co., Ltd. | +86-0592-6210733 | sale@mainchem.com | China | 32360 | 55 |
Syntechem Co.,Ltd | info@syntechem.com | China | 12990 | 57 | |
BOC Sciences | -- | info@bocsci.com | USA | 0 | 65 |
Shaanxi DIDU pharmaceutical and Chemical Co., Ltd | 17691182729 18161915376 | 1046@dideu.com | China | 10010 | 58 |
Supplier | Advantage |
---|---|
Mainchem Co., Ltd. | 55 |
Syntechem Co.,Ltd | 57 |
BOC Sciences | 65 |
Shaanxi DIDU pharmaceutical and Chemical Co., Ltd | 58 |