Sodium hydroxide
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Chemical formula | NaOH |
---|---|
OTP appearance | white solid |
Molar Mass(g/mol) | 39.9971 |
Density(g/cc) | 2.13 |
Melting Point(°C) | 318 |
Boiling Point(°C) | 1388 |
Solubility in water(g/L) | 1110 |
NFPA 704 |
Uses
Primary
- Industrial chemical
- Primary component in lye
- Primary alkali used to produce sodium salts from acids
Natural occurrence
- Sodium hydroxide does not occur naturally.
Hazards
Sodium hydroxide is extremely caustic, especially when wet. Exposure of wet (slaked) lye to skin or eyes is likely to result in severe chemical burns and/or blindness.
Production
Synthesis
- Metathesis: Combining aqueous sodium carbonate and calcium oxide produces sodium hydroxide and calcium carbonate
- Na2CO3(aq) + 2 Ca(OH)2(aq)→2 NaOH(aq) + 2 CaCO3(s)
Purification
- US patent 1562805 "Process for separating potassium and sodium hydroxides"
Link courtesy Google