Potassium Hydroxide CAS#1310-58-3
1. Strong Alkalinity: Potassium hydroxide has strong alkalinity, making it highly effective in various industrial applications.
2. High Solubility: It is soluble in water and ethanol, offering versatility in different processes.
3. Moisture Absorption: The compound easily absorbs moisture from the air, making it useful in specific reactions.
4. Wide Industrial Use: Primarily used for producing potassium salts, it also finds applications in electroplating and printing/dyeing industries.
Potassium hydroxide (KOH) is an inorganic compound widely recognized for its strong alkalinity. A 0.1 mol/L solution of potassium hydroxide has a pH of 13.5. It is highly soluble in both water and ethanol, with limited solubility in ether. The compound is hygroscopic, meaning it readily absorbs moisture from the air, becoming deliquescent over time.
Additionally, potassium hydroxide reacts with carbon dioxide to form potassium carbonate. Primarily, it is used as a raw material in the production of various potassium salts. It also finds applications in industries such as electroplating, printing, and dyeing.
Potassium Hydroxide Chemical 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 |
Fp | 52 °F |
storage temp | Store at +5°C to +30°C. |
solubility | H2O: 1 M at 20 °C, clear, colorless |
form | |
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) |
CAS DataBase Reference | 1310-58-3(CAS DataBase Reference) |
NIST Chemistry Reference | Potassium hydroxide(1310-58-3) |
EPA Substance Registry System | Potassium hydroxide (1310-58-3) |
Safety Information
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 |
WGK Germany | 1 |
RTECS | TT2100000 |
F | 3 |
Autoignition Temperature | 425 °C (ethanol) |
TSCA | Yes |
HazardClass | 8 |
PackingGroup | II |
HS Code | 28259090 |
Hazardous Substances Data | 1310-58-3(Hazardous Substances Data) |
Toxicity | LD50 orally in rats: 1.23 g/kg (Smyth) |
