send us an inquiry
LC4890 Potassium hydroxide
pellets pure


Order number Packaging Quantity Price €
AC31890 Plastic bottle 1 kg 17.46
AC31890 Plastic bottle 5 kg 63.00
AC31890 Fibre carton 50 kg inquire


Product information
Synonyms Potash caustic
Hill Formula HKO
Chemical formula KOH
HS Code 2815 20 00
EC number 215-181-3
Molar mass 56.11 g/mol
EC index number 019-002-00-8
CAS number 1310-58-3


Chemical and physical data
Solubility 1130 g/l (20 °C)
Melting point 360 °C
Molar mass 56.11 g/mol
Density 2.04 g/cm3 (20 °C)
pH value 14 (56 g/l, H2O, 20 °C)
Boiling point 1320 °C
Vapor pressure (20 °C)


Safety information according to GHS
Hazard Statement(s) H314: Causes severe skin burns and eye damage.
H302: Harmful if swallowed.
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)
RTECS TT2100000
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 corrosive
Hazard Symbol



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


Assay (acidimetric, KOH) ≥ 84 %
Carbonate (as K2CO3) ≤ 2 %
Chloride (Cl) ≤ 0.01 %
Sulphate (SO4) ≤ 0.01 %
Heavy metals (as Pb) ≤ 0.002 %
Al (Aluminium) ≤ 0.002 %
Fe (Iron) ≤ 0.002 %