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LC5147 Potassium hydroxide hydrate


Order number Packaging Quantity Price €
AC32147 Plastic bottle 500 g 522.90


Product information
Synonyms caustic potash monohydrate
Hill Formula HKO * H2O
Chemical formula KOH * H2O
HS Code 2815 20 00
EC number 215-181-3
Molar mass 74.13 g/mol
EC index number 019-002-00-8
CAS number 26288-25-5


Chemical and physical data
Solubility (20 °C) soluble
Melting point 143 °C
Molar mass 74.13 g/mol
pH value >13.5 (50 g/l, H2O, 20 °C)
Boiling point 1320 °C (1013 hPa)


Safety information according to GHS
Hazard Statement(s) H302: Harmful if swallowed.
H314: Causes severe skin burns and eye damage.
H290: May be corrosive to metals.
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) |
Storage class 8 B Non combustible, corrosive substances
WGK WGK 1 slightly water endangering
Disposal 13
Bases and alcoholates should be diluted if necessary by carefully stirring them into water and then neutralized (protective gloves, fume cupboard!) with hydrochloric acid (Cat. No. 100312). Before placing in container D, check the pH with pH universal indicator strips (Cat. No. 109535).


Safety information
R Phrase R 22-35
Harmful if swallowed.Causes severe burns.
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 harmful, corrosive
Hazard Symbol Corrosive


Transport information
Declaration (transport by sea) IMDG-Code UN 1813 POTASSIUM HYDROXIDE, SOLID, 8, II, Segregation Group: 18 (Alkalis)
Declaration (transport by air) IATA-DGR UN 1813 POTASSIUM HYDROXIDE, SOLID, 8, II


Toxicological data
LD 50 oral LD50 rat 273 mg/kg


Purity (metallic) ≥ 99.995 %
Chloride (Cl) ≤ 1 ppm
Phosphate (PO4) ≤ 0.05 ppm
Silicate (as SiO2) ≤ 5 ppm
Sulphate (SO4) ≤ 5 ppm
Al (Aluminium) ≤ 0.05 ppm
As (Arsenic) ≤ 0.1 ppm
Ba (Barium) ≤ 10 ppm
Ca (Calcium) ≤ 0.5 ppm
Cd (Cadmium) ≤ 0.01 ppm
Co (Cobalt) ≤ 0.01 ppm
Cu (Copper) ≤ 0.01 ppm
Fe (Iron) ≤ 0.05 ppm
Hg (Mercury) ≤ 0.01 ppm
Li (Lithium) ≤ 0.5 ppm
Mg (Magnesium) ≤ 0.1 ppm
Mn (Manganese) ≤ 0.05 ppm
Na (Sodium) ≤ 5 ppm
Ni (Nickel) ≤ 0.01 ppm
Pb (Lead) ≤ 0.01 ppm
Sr (Strontium) ≤ 0.5 ppm
Tl (Thallium) ≤ 0.01 ppm
Zn (Zinc) ≤ 0.05 ppm