Names IUPAC name Potassium hydroxide
Ither namesCaustic potash, Potash lye, Potassia, Potassium hydrate
Identifiers ChEBI ChemSpider EC Nummer 215-181-3 RTECS nummer TT2100000 UNII UN nummer 1813 InChI=1S/K.H2O/h;1H2/q+1;/p-1
Y Key:
KWYUFKZDYYNOTN-UHFFFAOYSA-M
Y InChI=1/K.H2O/h;1H2/q+1;/p-1
Key: KWYUFKZDYYNOTN-REWHXWOFAT
Properties HKO Molar mass 56.11 g·mol−1 Appearance white solid,deliquescent Odour odorless Density 2.044 g/cm3 (20 °C)[ 1] 3 (25 °C)[ 2] Meltin pynt °C (763 °F; 679 K)Bylin pynt °C (2,421 °F; 1,600 K)85 g/100 g (-23.2 °C)[ 1] [ 3] Solubility soluble inalcohol ,glycerol ether , liquidammonia Solubility inmethanol 55 g/100 g (28 °C)[ 2] Acidity (pK a )13.5 (0.1 M) Refractive index (n D )1.409 (20 °C) Structur rhombohedral Thermochemistry Speceefic heat capacity ,C 65.87 J/mol·K[ 2] Staundart molar S o 298 79.32 J/mol·K[ 4] [ 2] Std enthalpy o Δf H o 298 -425.8 kJ/mol[ 4] [ 2] -380.2 kJ/mol[ 2] Hazards GHS pictograms [ 5] GHS signal wird Danger GHS hazard statements H302, H314[ 5] GHS precautionary statements P280, P305+351+338, P310[ 5] NFPA 704 Flash pynt Non-flammable Lethal dose or concentration (LD ,LC ): 273 mg/kg (oral, rat)[ 6] Relatit compoonds Potassium hydrosulfide Potassium amide Lithium hydroxide Sodium hydroxide Rubidium hydroxide Caesium hydroxide Except whaur itherwise notit, data are gien for materials in thair
staundart state (at 25
°C [77
°F], 100
kPa).
Y verify (whit is Y N ?)Infobox references 
