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31252

Sigma-Aldrich

Potassium cyanide

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

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About This Item

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:
329753701
NACRES:
NB.24

grade

ACS reagent
puriss. p.a.

Agency

ISO
USP/NF
reag. Ph. Eur.

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

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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.

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

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

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

PDSCL

Poisonous substance

PRTR

Class I Designated Chemical Substances

ISHL Indicated Name

Substances Subject to be Indicated Names

ISHL Notified Names

Substances Subject to be Notified Names

JAN Code

31252-1.5KG:
31252-100G:4548173309927
31252-1KG:4548173309934
31252-250G:4548173309941
31252-25KG:
31252-VAR:
31252-6X250G:
31252-6X1KG:
31252-BULK:
31252-6X100G:

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Preparation and measurement of cassiterite for Sn isotope analysis
Mathur R, et al.
Geostandards and Geoanalytical Research, 41(4), 701-707 (2017)
Cyano compounds, inorganic
Gail E, et al.
Ullmann's Encyclopedia of Industrial Chemistry (2000)
Monochloramine-sensitive amperometric microelectrode: optimization of gold, platinum, and carbon fiber sensing materials for removal of dissolved oxygen interference
Lee WH, et al.
Ionics, 21(9), 2663-2674 (2015)
The effects of different sowing time and harvesting height on hydrocyanic acid content in some silage sorghum (sorghum bicolor l.) varieties
Mehmet
Turkish journal Of Field Crops, 22(2), 211-217 (2017)
Chemical Agents
Responding to Terrorism, 233-344 (2010)
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