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LC4889 Potassium hydrogen sulfate
for analysis EMSURE Reag. Ph Eur


Order number Packaging Quantity Price €
AC31889 Plastic bottle 500 g 26.10
AC31889 Plastic bottle 2.5 kg 80.55


Product information
Grade Reag. Ph Eur
Synonyms Potassium bisulfate
Hill Formula HKO4S
Chemical formula KHSO4
HS Code 2833 29 80
EC number 231-594-1
Molar mass 136.17 g/mol
EC index number 016-056-00-4
CAS number 7646-93-7


Chemical and physical data
Solubility 490 g/l (20 °C) (development of heat)
Melting point 195 °C (decomposition)
Molar mass 136.17 g/mol
Density 2.24 g/cm3 (20 °C)
Bulk density 1140 kg/m3
pH value 1 (50 g/l, H2O, 20 °C)


Safety information according to GHS
Hazard Statement(s) H314: Causes severe skin burns and eye damage.
H335: May cause respiratory irritation.
Precautionary Statement(s) P280: Wear protective gloves/protective clothing/eye protection/face protection.
P301 + P330 + P331: IF SWALLOWED: rinse mouth. Do NOT induce vomiting.
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 TS7200000
Storage class 8 B Non combustible, corrosive substances
WGK WGK 1 slightly water endangering
Disposal 14
Inorganic salts: Container I. Neutral solutions of the these salts: Container D. Before placing in Container D, check the pH with pH-Universal indicator strips (Item No. 109535).


Safety information
R Phrase R 34-37
Causes burns.Irritating to respiratory system.
S Phrase S 26-36/37/39-45
In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.Wear suitable protective clothing, gloves and eye/face protection.In case of accident or if you feel unwell, seek medical advice immediately (show the label where possible).
Categories of danger corrosive
Hazard Symbo



Transport information
Declaration (transport by sea) IMDG-Code UN 2509 POTASSIUM HYDROGEN SULPHATE, 8, II, Segregation Group: 1 (Acids)
Declaration (transport by air) IATA-DGR UN 2509 POTASSIUM HYDROGEN SULPHATE, 8, II


Toxicological data
LD 50 oral LD50 rat 2340 mg/kg


Assay (acidimetric) ≥ 99.0 %
Chloride (Cl) ≤ 0.0005 %
Phosphate (PO4) ≤ 0.001 %
Total nitrogen (N) ≤ 0.001 %
Heavy metals (as Pb) ≤ 0.0005 %
Al (Aluminium) ≤ 0.002 %
Ca (Calcium) ≤ 0.005 %
Fe (Iron) ≤ 0.0005 %
Na (Sodium) ≤ 0.005 %