Home Categories Inorganic chemistry Potassium hydroxide
A6715112

Potassium hydroxide , Electronic grade, 99.99%MetalsBasis, except sodium , 1310-58-3

Synonym(s):
Potassium hydroxide;Caustic potash;Potassium hydroxide solution;Potassium hydroxide hydrate;caustic potash monohydrate

CAS NO.:1310-58-3

Empirical Formula: KOH

Molecular Weight: 56.11

MDL number: MFCD00003553

EINECS: 215-181-3

Update time: 2022-07-08

PRODUCT Properties

Melting point: 361 °C (lit.)
Boiling point: 1320°C
Density  1.450 g/mL at 20 °C
vapor pressure  1 mm Hg ( 719 °C)
refractive index  n20/D 1.421
Flash point: 52 °F
storage temp.  Store at +5°C to +30°C.
solubility  H2O: 1 M at 20 °C, clear, colorless
form  powder
Specific Gravity 1.09
color  white
Odor Odorless
PH 10.98(1 mM solution);11.95(10 mM solution);12.88(100 mM solution);
explosive limit 3.5-15.0%(V) (ethanol)
Water Solubility  soluble
Sensitive  Air Sensitive & Hygroscopic
Merck  14,7640
Exposure limits Ceiling in air 2 mg/m3 (ACGIH).
Dielectric constant 3.3(Ambient)
Stability: Stable, but very hygroscopic. Dissolves exothermically in water. Incompatible with most metals, strong acids, acid chlorides, organic materials, zinc, aluminium, nitroalkanes, nitrobenzene, chlorine dioxide. Reacts vigorously with a wide variety of other materials. Readily absorbs water and carbon dioxide from the air.
InChIKey KWYUFKZDYYNOTN-UHFFFAOYSA-M
LogP -1.380 (est)

Description and Uses

Potassium Hydroxide is a water-soluble food additive and bleaching agent. upon exposure to air it readily absorbs carbon dioxide and moisture and deliquesces. it is used to destroy the bitter chemical constituents in olives that will be used as black olives.

Safety

Symbol(GHS) 
GHS05,GHS07
Signal word  Danger
Hazard statements  H290-H302-H314
Precautionary statements  P234-P260-P280-P301+P312-P303+P361+P353-P305+P351+P338
Hazard Codes  C,F,T,Xi
Risk Statements  34-35-22-11-39/23/24/25-23/24/25-36/38-36/37-67-52/53
Safety Statements  7-16-36/37-45-36/37/39-26-61
RIDADR  UN 2924 3/PG 2
OEL Ceiling: 2 mg/m3
WGK Germany  1
RTECS  TT2100000
3
Autoignition Temperature 425 °C (ethanol)
TSCA  Yes
HazardClass  8
PackingGroup  II
HS Code  28259090
Toxicity LD50 orally in rats: 1.23 g/kg (Smyth)

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