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LC4921 Potassium chromate
for analysis EMSURE ACS,Reag. Ph Eur


Order number Packaging Quantity Price €
AC31921 Plastic bottle 250 g 27.23
AC31921 Plastic bottle 1 kg 84.15


Product information
Grade ACS,Reag. Ph Eur
Synonyms chromic acid potassium salt
Hill Formula CrK2O4
Chemical formula K2CrO4
HS Code 2841 50 00
EC number 232-140-5
Molar mass 194.19 g/mol
EC index number 024-006-00-8
CAS number 7789-00-6


Chemical and physical data
Solubility 637 g/l (20 °C)
Melting point 985 °C
Molar mass 194.19 g/mol
Density 2.73 g/cm3 (18 °C)
Bulk density 1400 kg/m3
pH value 9.0 – 9.8 (50 g/l, H2O, 20 °C)
Boiling point 1000 °C


Safety information according to GHS
Hazard Statement(s) H350i: May cause cancer by inhalation.
H340: May cause genetic defects.
H319: Causes serious eye irritation.
H335: May cause respiratory irritation.
H315: Causes skin irritation.
H317: May cause an allergic skin reaction.
H410: Very toxic to aquatic life with long lasting effects.
Precautionary Statement(s) P201: Obtain special instructions before use.
P280: Wear protective gloves/protective clothing/eye protection/face protection.
P273: Avoid release to the environment.
P308 + P313: IF exposed or concerned: Get medical advice/attention.
P305 + P351 + P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
P302 + P352: IF ON SKIN: Wash with plenty of soap and water.
Signal Word Danger
Hazard Pictogram(s)

Storage class Non combustible substances, toxic
WGK WGK 3 highly 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 49-46-36/37/38-43-50/53
May cause cancer by inhalation.May cause heritable genetic damage.Irritating to eyes, respiratory system and skin.May cause sensitization by skin contact.Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment.
S Phrase S 53-45-60-61
Avoid exposure – obtain special instructions before use.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 carcinogenic, mutagenic, irritant, sensitizing, dangerous for the environment
Hazard Symbol

Dangerous for the environment


Transport information
Declaration (transport by sea) IMDG-Code UN 3288 TOXIC SOLID, INORGANIC, N.O.S.(POTASSIUM CHROMATE), 6.1, II
Declaration (transport by air) IATA-DGR UN 3288 TOXIC SOLID, INORGANIC, N.O.S.(POTASSIUM CHROMATE), 6.1, II


Assay (iodometric) ≥ 99.5 %
In water insoluble matter ≤ 0.005 %
pH-value (5 %; water) 9.0 – 9.8
Chloride (Cl) ≤ 0.001 %
Sulphate (SO4) ≤ 0.01 %
Ca (Calcium) ≤ 0.005 %
Na (Sodium) ≤ 0.02 %
Pb (Lead) ≤ 0.005 %