Understanding the Properties and Applications of Glacial Acetic Acid with CAS Number Details

Glacial Acetic Acid An Overview

Glacial acetic acid, with the chemical formula CH₃COOH and the CAS number 64-19-7, is a colorless liquid organic compound known for its distinctive sour taste and pungent odor. It is the pure form of acetic acid, with a high concentration of at least 99.5% acetic acid by weight. The term glacial refers to its ability to solidify into ice-like crystals at temperatures below 16.6°C (62°F), giving it a unique characteristic compared to diluted forms of the acid.

Properties and Uses

Glacial acetic acid is a versatile chemical with a wide range of applications across various industries. It is a key ingredient in the production of many chemical intermediates, including acetate esters, which are used in the manufacture of plastics, paints, and textiles. One of its most significant derivatives is acetic anhydride, which is vital in the production of synthetic fibers, such as rayon and acetate.

In addition to its industrial applications, glacial acetic acid plays a role in food production. It is frequently used as a food preservative and flavoring agent, particularly in the pickling industry. The acidity of the compound helps to inhibit the growth of spoilage organisms, thereby extending the shelf life of food products.

Moreover, glacial acetic acid is significant in the pharmaceutical industry, where it serves as a solvent and as a reagent in the synthesis of various medications. Its antimicrobial properties make it useful in formulations for treating infections.

Despite its wide-ranging applications, glacial acetic acid is a corrosive substance and should be handled with care. Direct contact with the skin or eyes can result in serious burns, and inhalation of vapor can irritate the respiratory tract. Therefore, proper personal protective equipment (PPE), such as gloves and goggles, is essential when working with this chemical.

Storage of glacial acetic acid should be in a cool, well-ventilated area, away from incompatible substances such as strong oxidizers and certain metals. It is typically stored in stainless steel or glass containers, as plastic may degrade when in contact with the acid.

Environmental Impact

The environmental implications of glacial acetic acid usage and disposal are also a concern. When released into the environment, it can contribute to acidification, affecting aquatic life and ecosystems. Therefore, it is crucial to follow regulatory guidelines regarding its discharge and to implement adequate waste management practices.

Conclusion

Glacial acetic acid, recognized by its CAS number 64-19-7, is an essential compound in various sectors, from industrial manufacturing to food production. While its versatility and functionality contribute significantly to its value, safe handling practices and awareness of its environmental impact are vital for sustainable use. As industries continue to seek efficient and effective chemicals, glacial acetic acid remains a prominent player, showcasing the importance of rigorous safety measures alongside its indispensable applications.