Exploring the Properties and Applications of Glacial Acetic Acid CAS Number

Glacial Acetic Acid Properties, Uses, and Safety Considerations

Glacial acetic acid, with the chemical formula CH₃COOH, is a colorless liquid organic compound that has a high level of purity (over 99%) and a distinct pungent smell similar to vinegar. It is known for its use in various industrial applications, as well as its role in chemical synthesis. The Chemical Abstracts Service (CAS) number for glacial acetic acid is 64-19-7, which is a unique identifier used to provide a way to look up chemical substances in databases.

The name glacial refers to its solid state at lower temperatures; glacial acetic acid can freeze and form ice-like crystals at around 16.6 degrees Celsius (62 degrees Fahrenheit). When it solidifies, it resembles ice, hence its name. This property makes glacial acetic acid particularly interesting from a physical chemistry perspective, as it behaves differently compared to its aqueous solutions.

One of the primary uses of glacial acetic acid is in the production of various chemicals. It is an important precursor in the synthesis of acetic anhydride, which is used in the manufacture of plastics, synthetic fibers, and food additives. Another vital application is in the production of acetate esters used in solvents and coatings.

In addition to industrial applications, glacial acetic acid also finds its utility in laboratories for chemical synthesis and as a solvent in various reactions. It acts as a reagent in organic chemistry, especially in the formation of acetyl derivatives. Furthermore, due to its acidic properties, it can be used in pH adjustments in various chemical processes.

While glacial acetic acid is a valuable chemical, it is essential to understand its safety considerations. It is classified as a corrosive substance and can cause severe burns to the skin and eyes upon contact. Inhalation of its vapors can lead to respiratory irritation or more severe health effects. Therefore, proper handling and safety precautions, including the use of personal protective equipment such as gloves, goggles, and masks, are crucial when working with this compound.

Moreover, storage of glacial acetic acid should be in tightly closed containers, away from heat sources and incompatible materials such as strong oxidizing agents. Its flammability indicates that pilot lights, sparks, or open flames should be avoided in the vicinity.

In summary, glacial acetic acid (CAS number 64-19-7) is a versatile chemical with numerous industrial and laboratory applications. Its unique properties and reactivity make it a crucial component in various chemical processes. However, due to its corrosive nature and health hazards, it is imperative to adhere to safety protocols when handling this substance. Understanding both the benefits and risks associated with glacial acetic acid can lead to safer and more effective use in both industrial and research environments.