What Temperature Does Isopropyl Alcohol Freeze?

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The Basics of Isopropyl Alcohol

Isopropyl alcohol, also known as rubbing alcohol, is a common household and industrial chemical that is well-known for its disinfectant properties. It is widely used as a solvent, cleaning agent, and fuel additive. Isopropyl alcohol is a colorless, flammable liquid that has a strong odor and a bitter taste. It is soluble in water, ethanol, and ether.

Freezing Point of Isopropyl Alcohol

The freezing point of isopropyl alcohol varies depending on the concentration of the solution. Pure isopropyl alcohol has a freezing point of -89 degrees Celsius (-128 degrees Fahrenheit). However, most commercially available isopropyl alcohol solutions contain water and have a lower freezing point.

Common Concentrations of Isopropyl Alcohol

Isopropyl alcohol solutions are available in various concentrations, ranging from 70% to 99%. The most common concentrations used for disinfecting and cleaning purposes are 70% and 91%.

Freezing Point of 70% Isopropyl Alcohol

The freezing point of 70% isopropyl alcohol is approximately -22 degrees Celsius (-8 degrees Fahrenheit). This means that it will start to freeze at temperatures below -22 degrees Celsius.

Freezing Point of 91% Isopropyl Alcohol

The freezing point of 91% isopropyl alcohol is approximately -42 degrees Celsius (-44 degrees Fahrenheit). This means that it will start to freeze at temperatures below -42 degrees Celsius.

Uses of Frozen Isopropyl Alcohol

Frozen isopropyl alcohol can be useful in various applications. For example, it can be used as a cooling agent in electronic devices, such as computer processors and graphics cards. It can also be used as a solvent for extracting essential oils and other compounds from plants.

Precautions When Handling Isopropyl Alcohol

Isopropyl alcohol is highly flammable and should be handled with care. It should be kept away from heat sources, sparks, and open flames. It should also be stored in a well-ventilated area. In addition, it should not be ingested or applied to the skin in large quantities, as it can cause irritation and other adverse effects.

Conclusion

In summary, the freezing point of isopropyl alcohol varies depending on the concentration of the solution. Pure isopropyl alcohol has a freezing point of -89 degrees Celsius, but most commercially available solutions contain water and have a lower freezing point. The most common concentrations used for disinfecting and cleaning purposes are 70% and 91%. Frozen isopropyl alcohol can be useful in various applications, but it should be handled with care due to its flammable and potentially harmful properties.