207810

Potassium cyanide

ACS reagent, ≥96.0%

• Linear Formula: KCN
• CAS Number: 151-50-8
• Molecular Weight: 65.12
• Beilstein: 3593645
• EC Number: 205-792-3
• MDL number: MFCD00011397
• UNSPSC Code: 12352302
• PubChem Substance ID: 329752024
• NACRES: NA.21

Properties

• grade: ACS reagent
• Assay: ≥96.0%
• form: granular
• pH: 11.5 (20 °C, 20 g/L)
• mp: 634 °C (lit.)
• solubility: water: soluble(lit.)
• anion traces: S^2-: ≤0.003%; SCN^-: passes test; chloride (Cl^-): ≤0.5%; phosphate (PO₄^3-): ≤0.005%; sulfate (SO₄^2-): ≤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

Description

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.

Safety Information

• Pictograms: GHS06,GHS08,GHS05,GHS09
• Signal Word: Danger
• Hazard Statements: H290,H300 + H310 + H330,H372,H410
• Precautionary Statements: P262 - P273 - P280 - P302 + P352 + P310 - P304 + P340 + P310 - P314
• 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
• Supplementary Hazards: EUH032
• Storage Class Code: 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