Potassium hydroxide

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Potassium hydroxide
Chemical formula	KOH
OTP appearance	white solid
Molar Mass(g/mol)	56
Density(g/cc)	2.04
Melting Point(°C)	406
Boiling Point(°C)	1327
Solubility in water(g/L)	1210
NFPA 704	0 3 1 ALK

Uses

Primary

Primary alkali used in the production of potassium salts from acids
Key alkaline reagent

Natural occurrence

Does not occur naturally.

Hazards

Eye irritant
Caustic, Corrosive

Production

Synthesis

Metathesis: combine aqueous potassium carbonate and calcium oxide producing potassium hydroxide and calcium carbonate
K₂CO₃(aq) + 2 Ca(OH)₂(aq) → 2 KOH(aq) + 2 CaCO₃(s)

Purification

US patent 1562805 "Process for separating potassium and sodium hydroxides"
Link courtesy Google

Testing

Storage

Disposal

See Also

Sodium hydroxide

References

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