What are the boiling and melting points of acetone?

Boiling Point and Melting Point Range of Acetone and Its Application Analysis

acetone (scientific name: propanedione, chemical formula: Cincreased) is a colorless liquid with a light aroma, widely used in chemical, pharmaceutical, cosmetic and food industries and other fields. Its unique physical and chemical properties make it of great value in practical applications. In this paper, the boiling and melting ranges of acetone will be discussed in detail, and the influence of these properties on its application will be analyzed.

acetone boiling point range

The boiling point of acetone is one of its important physical properties. At standard atmospheric pressure (1 atm), acetone has a boiling point of 56.5°C. This boiling point is relatively high, but well below the 100°C of water. This property makes acetone liquid at room temperature, but evaporates rapidly when heated to about 56°C. The boiling point characteristics of acetone are of great significance in experimental and industrial applications. For example, in the laboratory, acetone is often used in extraction and distillation experiments, and its boiling point is moderate, which is easy to control and operate. In industrial production, the boiling point of acetone makes it an excellent solvent, which is widely used in the production of coatings, adhesives and detergents.

acetone melting point range

The melting point of acetone is relatively low compared to the boiling point. At standard atmospheric pressure, acetone has a melting point of -94.9°C. This temperature is well below the freezing point, indicating the stability of acetone at low temperatures. The low melting point of acetone enables it to remain liquid in extreme cold conditions, which is particularly important for applications in some special environments. For example, in scientific research experiments, acetone is often used as a refrigerant, because it can still maintain a liquid state at low temperatures, and can quickly cool the sample without freezing, thereby ensuring the accuracy of the experiment.

Factors Affecting the Boiling Point and Melting Point of Acetone

Although the boiling and melting points of acetone are determined under standard conditions, these values may vary under different environmental conditions. For example, changes in pressure can affect the boiling point of acetone. In a high pressure environment, the boiling point of acetone will increase, while in a low pressure environment, such as high altitude, it will decrease. The purity of acetone also affects its boiling point and melting point. The higher the purity, the closer the boiling point and melting point are to the standard value; if impurities are contained, especially high boiling point or low boiling point substances, the boiling point and melting point will change significantly.

Application areas

The boiling point and melting point characteristics of acetone make it an important basic material in many fields. In chemical production, acetone is used as a solvent for the manufacture of plastics, fibers, rubber and other materials; in the pharmaceutical industry, acetone is an important intermediate for the synthesis of a variety of drugs; in the field of cosmetics, acetone is often used in the production of nail polish removal water, because of its strong volatility, easy to clean after use; in the food industry, acetone is used as a preservative and spice ingredients.

Safety Precautions

Although acetone is widely used in many fields, its flammable and volatile nature requires us to pay attention to safety during storage and use. Acetone has a low boiling point and is easy to volatilize. It may cause combustion or even explosion when exposed to an open flame or high temperature. Therefore, it should be stored in a cool, well-ventilated place and kept away from fire sources. Because acetone is irritating to the skin and mucous membranes, use protective gloves and masks to avoid direct contact or inhalation.

Conclusion

As an important chemical raw material, the boiling point and melting point characteristics of acetone directly affect its application range and safety. Understanding the physical and chemical properties of acetone will not only help us to make better use of its advantages in actual operation, but also effectively avoid potential safety hazards. With the progress of science and technology, more application fields of acetone are still expanding, and its importance in modern industry will become increasingly prominent.