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LC4924 Potassium cyanide
for analysis EMSURE ACS,Reag. Ph Eur


Order number Packaging Quantity Price €
AC31924 Plastic bottle 100 g 18.45
AC31924 Plastic bottle 250 g 33.98
AC31924 Plastic bottle 1 kg 103.5


Product information
Grade ACS,Reag. Ph Eur
Synonyms Cyanogen potassium
Hill Formula CKN
Chemical formula KCN
HS Code 2837 19 00
EC number 205-792-3
Molar mass 65.12 g/mol
EC index number 006-007-00-5
CAS number 151-50-8


Chemical and physical data
Solubility 716 g/l (25 °C)
Melting point 634 °C
Molar mass 65.12 g/mol
Density 1.55 g/cm3 (20 °C)
Bulk density 750 kg/m3
pH value 11 – 12 (20 g/l, H2O, 20 °C)
Boiling point 1625 °C (1013 hPa)
Vapor pressure (20 °C)


Safety information according to GHS
Hazard Statement(s) H300 + H310 + H330: Fatal if swallowed, in contact with skin or if inhaled.
H410: Very toxic to aquatic life with long lasting effects.
EUH032: Contact with acids liberates very toxic gas.
Precautionary Statement(s) P273: Avoid release to the environment.
P280: Wear protective gloves/protective clothing.
P302 + P352: IF ON SKIN: Wash with plenty of soap and water.
P304 + P340: IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing.
Signal Word Danger
Hazard Pictogram(s)
RTECS TS8750000
Storage class Non combustible substances, toxic
WGK WGK 3 highly water endangering
Disposal 6
Sulfides and sulfites as well as other reducing substances, inorganic cyanides and isonitriles: Stir into sodium hypochlorite solution (Cat. No. 105614) and, if necessary, leave to react for several days. Caution: some substances may show a violent reaction! Draw off any toxic or flammable gases that may be formed. Excess oxidant should be neutralized with sodium thiosulfate (Cat. No. 106513). Container D or E.


Safety information
R Phrase R 26/27/28-32-50/53
Very toxic by inhalation, in contact with skin and if swallowed.Contact with acids liberates very toxic gas.Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment.
S Phrase S 7-28-29-45-60-61
Keep container tightly closed.After contact with skin, wash immediately with plenty of soap and water.Do not empty into drains.In case of accident or if you feel unwell, seek medical advice immediately (show the label where possible).This material and its container must be disposed of as hazardous waste.Avoid release to the environment. Refer to special instructions/ Safety data sheets.
Categories of danger very toxic, dangerous for the environment
Hazard Symbol

Very toxic
Dangerous for the environment


Transport information
Declaration (transport by sea) IMDG-Code UN 1680 POTASSIUM CYANIDE, SOLID, 6.1, I, Marine Pollutant: P, Segregation Group: 6 (Cyanides)
Declaration (transport by air) IATA-DGR UN 1680 POTASSIUM CYANIDE, SOLID, 6.1, I


Toxicological data
LD 50 oral LD50 rat 5 mg/kg
LD 50 dermal LD50 rabbit 14.3 – 33.3 mg/kg


Assay (argentometric) ≥ 97.0 %
Chloride (Cl) ≤ 0.02 %
Phosphate (PO4) ≤ 0.005 %
Sulphate (SO4) ≤ 0.04 %
Sulphide (S) ≤ 0.0005 %
Thiocyanate (SCN) ≤ 0.01 %
Fe (Iron) ≤ 0.01 %
Na (Sodium) ≤ 0.5 %
Pb (Lead) ≤ 0.0002 %