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LC4899 Potassium iodate
volumetric standard, secondary reference material for iodometry, traceable to NIST SRM


Order number Packaging Quantity Price €
AC31899 Glass bottle 100 g 56.25


Product information
Hill Formula IKO3
Chemical formula KIO3
HS Code 2829 90 80
EC number 231-831-9
Molar mass 214 g/mol
CAS number 7758-05-6


Chemical and physical data
Solubility 92 g/l (25 °C)
Melting point 560 °C decomposes
Molar mass 214 g/mol
Density 3.98 g/cm3 (20 °C)
Bulk density 2000 kg/m3
pH value 6 (50 g/l, H2O, 20 °C)


Safety information according to GHS
Hazard Statement(s) H272: May intensify fire; oxidiser.
H318: Causes serious eye damage
Precautionary Statement(s) P305 + P351 + P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
Signal Word Danger
Hazard Pictogram(s)
RTECS NN1350000
Storage class 5.1 B Oxidizing agents (TRG 515 Group 2+3)
WGK WGK 1 slightly 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 41
Risk of serious damage to eyes.
S Phrase S 17-26-39
Keep away from combustible material.In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.Wear eye/face protection.
Categories of danger irritant
Hazard Symbol



Transport information
Declaration (transport by sea) IMDG-Code UN 1479 OXIDIZING SOLID, N.O.S.(POTASSIUM IODATE), 5.1, II
Declaration (transport by air) IATA-DGR UN 1479 OXIDIZING SOLID, N.O.S.(POTASSIUM IODATE), 5.1, II