Potassium acetate, with the chemical formula CH₃COOK, is an organic salt, commonly found as a colorless or white crystalline powder.
Basic properties：
- Appearance: Colorless or white crystalline powder, easily soluble in water, the aqueous solution is weakly alkaline.
- Solubility: easily soluble in water, slightly soluble in ethanol.
- pH value: The pH of 1% aqueous solution is about 8-9.
Main application：
- Food industry: used as preservatives, acidity regulators, etc. in food processing.
- Medical field: used as a diuretic and electrolyte supplement.
- Laboratory: commonly used reagent for buffer solution preparation and chemical analysis.
- Others: also used in textile, papermaking, detergent and other industries.
Preparation method：
It is mainly prepared by the reaction of acetic acid with potassium hydroxide or potassium carbonate. The reaction is as follows:
- CH₃COOH + KOH → CH₃COOK + H₂O
- 2CH₃COOH + K₂CO₃ → 2CH₃COOK + CO₂ + H₂O
Safety precautions：
- Inhalation: May irritate the respiratory tract, so please operate in a well-ventilated place.
- Contact: May irritate the skin and eyes, so please wear protective equipment when operating.
- Ingestion: Ingestion of large amounts may cause gastrointestinal discomfort, so please avoid accidental ingestion.
Storage：
It should be stored in a cool, dry, ventilated place, away from acids and flammable materials.
Summary：
Potassium acetate is widely used in food, medicine, laboratories and other fields. When using it, attention should be paid to safe operation and storage conditions.