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LC4913 Potassium chlorate
for analysis EMSURE


Order number Packaging Quantity Price €
AC31913 Metal can 100 g 27.68
AC31913 Metal can 500 g 41.5


Product information
Hill Formula ClKO3
Chemical formula KClO3
HS Code 2829 19 00
EC number 223-289-7
Molar mass 122.55 g/mol
EC index number 017-004-00-3
CAS number 3811-04-9


Chemical and physical data
Solubility 73 g/l (20 °C)
Melting point 356 °C
Molar mass 122.55 g/mol
Density 2.32 g/cm3 (20 °C)
Bulk density 1200 – 1400 kg/m3
pH value 5.6 (73 g/l, H2O, 20 °C)
Boiling point 400 °C (decomposition)
Vapor pressure (20 °C)


Safety information according to GHS
Hazard Statement(s) H271: May cause fire or explosion; strong oxidiser.
H332: Harmful if inhaled.
H302: Harmful if swallowed.
H411: Toxic to aquatic life with long lasting effects.
Precautionary Statement(s) P210: Keep away from heat/sparks/open flames/hot surfaces. – No smoking.
P273: Avoid release to the environment.
Signal Word Danger
Hazard Pictogram(s)

Storage class Oxidising Agents
WGK WGK 2 water endangering
Disposal 22
Inorganic peroxides and oxidants as well as bromine and iodine should be rendered harmless by reduction with acidic sodium thiosulfate solution (Cat. No. 106513); container D or E. Slightly soluble oxidants should be collected separately in container E or I.


Safety information
R Phrase R 9-20/22-51/53
Explosive when mixed with combustible material.Harmful by inhalation and if swallowed.Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment.
S Phrase S 13-16-27-61
Keep away from food, drink and animal feedingstuffs.Keep away from sources of ignition – No smoking.Take off immediately all contaminated clothing.Avoid release to the environment. Refer to special instructions/ Safety data sheets.
Categories of danger oxidizing, harmful, dangerous for the environment
Hazard Symbol

Dangerous for the environment


Transport information
Declaration (transport by sea) IMDG-Code UN 1485 POTASSIUM CHLORATE, 5.1, II, Segregation Group: 4 (Chlorates)
Declaration (transport by air) IATA-DGR UN 1485 POTASSIUM CHLORATE, 5.1, II


Toxicological data
LD 50 oral LD50 rat 1870 mg/kg


Assay (argentometric) ≥ 99.0 %
Identity passes test
Chloride (Cl) ≤ 0.005 %
Sulphate (SO4) ≤ 0.002 %
Total nitrogen (N) ≤ 0.0005 %
Heavy metals (as Pb) ≤ 0.0005 %
As (Arsenic) ≤ 0.00005 %
Ca (Calcium) ≤ 0.002 %
Fe (Iron) ≤ 0.0003 %
Mg (Magnesium) ≤ 0.001 %
Na (Sodium) ≤ 0.01 %