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Merck

207810

Potassium cyanide

ACS reagent, ≥96.0%

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About This Item

Linear Formula:
KCN
CAS Number:
151-50-8
Molecular Weight:
65.12
UNSPSC Code:
12352302
NACRES:
NA.21
PubChem Substance ID:
329752024
EC Number:
205-792-3
Beilstein/REAXYS Number:
3593645
MDL number:
MFCD00011397
Assay:
≥96.0%
Grade:
ACS reagent
Form:
granular
Solubility:
water: soluble(lit.)

Key Documents

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Product Name

Potassium cyanide, ACS reagent, ≥96.0%

InChI key

YUZRZFQHUCKACF-UHFFFAOYSA-N

InChI

1S/CN.K/c1-2;

SMILES string

[K]C#N

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

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

Quality Level

200

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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.

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.

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

EUH032

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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Certificates of Analysis (COA)

Lot/Batch Number
MKCX1904
MKCV9048
MKCV6716
MKCT4737
MKCV4670

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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)
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)
Eagleson M.
Concise Encyclopedia Chemistry, 18-18 (1994)
Rui Liu et al.
International journal of molecular sciences, 21(11) (2020-06-11)
Pentatricopeptide repeat (PPR) protein comprises a large family, participating in various aspects of organellar RNA metabolism in land plants. There are approximately 600 PPR proteins in maize, but the functions of many PPR proteins remain unknown. In this study, we
Reaction of the Methiodide of N, N-Dimethylaminomethylferrocene with Potassium Cyanide to Form Ferrocylacetonitrile1.
Lednicer D, et al.
The Journal of Organic Chemistry, 23(5), 653-655 (1958)
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