Potassium Acetate – Versatile Salt for Industrial and Laboratory Applications

Potassium Acetate (CH₃COOK) is a white, hygroscopic, crystalline powder or granular solid widely used in chemical manufacturing, laboratories, deicing, and pharmaceuticals. As the potassium salt of acetic acid, it offers excellent solubility and reactivity, making it valuable in a variety of sectors.

Chemical Overview

• Chemical Name: Potassium Acetate

• Formula: CH₃COOK

• Molecular Weight: 98.14 g/mol

• CAS Number: 127-08-2

• Appearance: White crystalline powder or granular solid

• Solubility: Highly soluble in water, soluble in alcohol

• pH (5% solution): Approx. 7.5–9.0

Key Properties

• Acts as a buffering agent in biochemical applications

• Possesses hygroscopic properties (absorbs moisture from air)

• Thermally stable and non-volatile

• Low freezing point when dissolved, useful for deicing formulations

Applications

Laboratory & Biotechnology

• Used as a buffering salt in molecular biology protocols, especially in DNA precipitation and purification

• Employed in protein crystallization and enzyme stabilization

• Useful in buffer systems such as potassium acetate-acetic acid buffer (pH control)

Deicing Agent

• Commonly used as an airport runway and highway deicer

• Less corrosive than traditional sodium chloride, making it suitable for metal-sensitive surfaces

• Effective at lower temperatures, even below freezing

Industrial Use

• Used in the textile industry for dyeing and printing processes

• Employed in the manufacture of fire extinguishers, where it acts as a coolant and suppressant

• Functions as a catalyst or reagent in organic synthesis

Pharmaceutical Applications

• Occasionally used as a systemic alkalizer and electrolyte replenisher

• Can be found in intravenous fluids (under medical supervision) to correct hypokalemia

Handling & Storage

• Store in a cool, dry place, away from strong oxidizing agents

• Keep container tightly sealed to prevent moisture absorption

• Use personal protective equipment (PPE) including gloves, goggles, and lab coat when handling

• Dispose of in accordance with local and international environmental regulations

Safety Information

• Generally considered low toxicity, but dust inhalation and eye/skin contact should be avoided

• May cause mild irritation to mucous membranes

• Not classified as hazardous under most transport regulations

Conclusion

Potassium Acetate is a versatile, high-solubility salt used across a range of industries for its buffering, deicing, and reactivity properties. Whether in the lab, on airport runways, or in chemical synthesis, it provides reliable performance with relatively low environmental and health hazards when handled properly.

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