207810
Potassium cyanide
ACS reagent, ≥96.0%
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About This Item
Linear Formula:
KCN
CAS Number:
Molecular Weight:
65.12
UNSPSC Code:
12352302
NACRES:
NA.21
PubChem Substance ID:
EC Number:
205-792-3
Beilstein/REAXYS Number:
3593645
MDL number:
Assay:
≥96.0%
Grade:
ACS reagent
Form:
granular
Solubility:
water: soluble(lit.)
grade
ACS reagent
Quality Level
assay
≥96.0%
form
granular
pH
11.5 (20 °C, 20 g/L)
mp
634 °C (lit.)
solubility
water: soluble(lit.)
anion traces
S2-: ≤0.003%, SCN-: passes test, chloride (Cl-): ≤0.5%, phosphate (PO43-): ≤0.005%, sulfate (SO42-): ≤0.04%
cation traces
Fe: ≤0.03%, Na: ≤0.5%, Pb: ≤2 ppm
SMILES string
[K]C#N
InChI
1S/CN.K/c1-2;
InChI key
YUZRZFQHUCKACF-UHFFFAOYSA-N
General description
Potassium cyanide is a colorless hygroscopic compound. Its crystals exhibit cubic crystal system. It can be prepared by reacting hydrogen cyanide with potassium hydroxide. It participates in benzoin condensation reaction.
Application
Potassium cyanide may be employed in the following studies:
- As a reducing agent in the colorimetric determination of amino acids.
- Preparation of ferrocylacetonitrile, via reaction with methiodide of N,N-dimethylaminomethylferrocene.
- Synthesis of O-acetylcyanohydrins.
- Cyanation of aldimines via asymmetric Strecker-type reactions in the presence of chiral phase-transfer catalysts to form α-amino nitriles.
- Metal-catalyzed addition of cyanide to 1,2-epoxides to form β-hydroxy nitriles.
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signalword
Danger
Hazard Classifications
Acute Tox. 1 Oral - Acute Tox. 2 Dermal - Acute Tox. 2 Inhalation - Aquatic Acute 1 - Aquatic Chronic 1 - Met. Corr. 1 - STOT RE 1
target_organs
Thyroid
supp_hazards
Storage Class
6.1A - Combustible acute toxic Cat. 1 and 2 / very toxic hazardous materials
wgk
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
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Asymmetric Strecker reaction of aldimines using aqueous potassium cyanide by phase-transfer catalysis of chiral quaternary ammonium salts with a tetranaphthyl backbone.
Ooi T, et al.
Journal of the American Chemical Society, 128(8), 2548-2549 (2006)
Eagleson M.
Concise Encyclopedia Chemistry, 18-18 (1994)
Easy direct stereo-and regioselective formation of ?-hydroxy nitriles by reaction of 1, 2-epoxides with potassium cyanide in the presence of metal salts.
Chini M, et al.
Tetrahedron Letters, 32(36), 4775-4778 (1991)