Potassium hydroxide fused (CAS 1310-58-3)
Fused caustic potash (CAS 1310-58-3) is a strong alkali that turns into an aggressive liquid at temperatures above 360 °C. It actively absorbs carbon dioxide and water from the air, which can change its chemical composition. It is widely used in electrolysis, synthesis of organic compounds and laboratory analysis.
1. Chemical nature
Fused caustic potash is the result of thermal action on solid potassium hydroxide. At high temperatures, the compound is in the liquid phase, retains an extremely alkaline nature, and is capable of corroding most metals and glass (under appropriate conditions).
2. Properties and parameters
Molecular formula: KOH
Appearance: transparent colorless liquid at high temperatures
Density (melt): decreases with increasing temperature; about 2.0 g/cm³ at ~360 °C
Melting point: 360 °C
Solubility: completely miscible with water with the release of heat
Storage: for the molten state, special crucibles or thermostatically controlled reactors are used
3. Application
Industrial catalysis: it acts in a number of reactions where a strong base is required at high temperatures.
Laboratory practice: etching of materials, destruction of organic residues, preparation of concentrated alkaline solutions.
Production of chemical fibers: it participates in the alkaline regeneration of some fibers.
4. Danger and protective measures
Chemical burns: liquid KOH causes instant thermal and chemical damage to the skin.
Corrosion of equipment: it corrodes metal surfaces, requiring the selection of special alloys.
Ventilation: vapors and aerosols require the organization of exhaust systems and the use of PPE.
5. Conclusion
Molten Potassium Hydroxide (CAS 1310-58-3) exhibits high reactivity, due to both high temperature and the basicity inherent in KOH. When used correctly, it is a key component in various industries, from organic synthesis to battery systems.
