Merck
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60178

Sigma-Aldrich

Potassium cyanide

BioUltra, ≥98.0% (AT)

Linear Formula:
KCN
CAS Number:
Molecular Weight:
65.12
Beilstein:
3593645
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.25

biological source

synthetic

Quality Level

product line

BioUltra

assay

≥98.0% (AT)

form

crystalline

impurities

insoluble matter, passes filter test

pH

11.0-13.0 (25 °C, 1 M in H2O)

mp

634 °C (lit.)

solubility

H2O: 1 M at 20 °C, clear, colorless

anion traces

chloride (Cl-): ≤200 mg/kg
sulfate (SO42-): ≤400 mg/kg
sulfide (S2-): ≤5 mg/kg
thiocyanate (SCN-): ≤100 mg/kg

cation traces

Al: ≤5 mg/kg
As: ≤0.1 mg/kg
Ba: ≤5 mg/kg
Bi: ≤5 mg/kg
Ca: ≤50 mg/kg
Cd: ≤5 mg/kg
Co: ≤5 mg/kg
Cr: ≤5 mg/kg
Cu: ≤5 mg/kg
Fe: ≤100 mg/kg
Li: ≤5 mg/kg
Mg: ≤5 mg/kg
Mn: ≤5 mg/kg
Mo: ≤5 mg/kg
Na: ≤5000 mg/kg
Ni: ≤5 mg/kg
Pb: ≤5 mg/kg
Sr: ≤5 mg/kg
Zn: ≤5 mg/kg

λ

1 M in H2O

UV absorption

λ: 260 nm Amax: 0.06
λ: 280 nm Amax: 0.03

SMILES string

[K]C#N

InChI

1S/CN.K/c1-2;

InChI key

YUZRZFQHUCKACF-UHFFFAOYSA-N

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Application

Potassium cyanide is use to inhibit oxidative phosphorylation reactions in a wide variety of biological systems and applications.

Other Notes

Blocks electron transport to oxygen via cytochrome oxidase, hence employed in the determination of succinate dehydrogenase in submitochondrial particles by preventing substantial loss of succinate by electron flux to O2

Signal Word

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

Supplementary Hazards

Storage Class Code

6.1B - Non-combustible, acute toxic Cat. 1 and 2 / very toxic hazardous materials

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificate of Analysis

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Certificate of Origin

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