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Merck
CN

31252

Potassium cyanide

puriss. p.a., ACS reagent, reag. Ph. Eur., ≥97.0%

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About This Item

Linear Formula:
KCN
CAS Number:
Molecular Weight:
65.12
UNSPSC Code:
12352302
NACRES:
NB.24
PubChem Substance ID:
EC Number:
205-792-3
Beilstein/REAXYS Number:
3593645
MDL number:
Assay:
≥97.0%
Form:
crystals
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agency

ISO, USP/NF, reag. Ph. Eur.

grade

ACS reagent, puriss. p.a.

assay

≥97.0%

form

crystals

impurities

≤0.01% thiocyanate (SCN)

pH

11.5 (20 °C, 20 g/L)

mp

634 °C (lit.)

anion traces

chloride (Cl-): ≤200 mg/kg, phosphate (PO43-): ≤50 mg/kg, sulfate (SO42-): ≤400 mg/kg, sulfide (S2-): ≤5 mg/kg

cation traces

Fe: ≤100 mg/kg, Na: ≤5000 mg/kg, Pb: ≤2 mg/kg

SMILES string

[K]C#N

InChI

1S/CN.K/c1-2;

InChI key

YUZRZFQHUCKACF-UHFFFAOYSA-N

General description

Potassium cyanide, a potassium salt, is a colorless hygroscopic compound.

Application

Potassium cyanide has been used:
  • in the reduction of cassiterite for Sn isotope analysis
  • gold microelectrode fabrication
  • to prepare the calibration curve for colorimetric determination of hydrocyanic acid (HCN) levels in Sorghum and Sudangrass species

Biochem/physiol Actions

Potassium cyanide (KCN) is useful in dyeing, printing, photography, metal cleaning, and manufacturing. It is considered a reversible cytochrome oxidase inhibitor that blocks cellular respiration. KCN is poisonous when inhaled or ingested.


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wgk

WGK 3

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

flash_point_f

Not applicable

flash_point_c

Not applicable



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