Introduction
CAS numbers are unique numerical identifiers assigned to chemical substances, providing a standardized way to identify and reference them in scientific literature, regulatory databases, and industrial applications. CAS 79 - 10 - 7 is a well - known chemical with a wide range of applications. As a reliable supplier of CAS 79 - 10 - 7, I am here to share detailed information about its chemical name, properties, applications, and more.
The Chemical Name of CAS 79 - 10 - 7
CAS 79 - 10 - 7 corresponds to acetic acid, also known as ethanoic acid according to the International Union of Pure and Applied Chemistry (IUPAC) naming system. The name "ethanoic acid" follows the IUPAC rules for naming carboxylic acids. In this system, the longest carbon chain containing the carboxyl group (-COOH) is identified. For acetic acid, the chain has two carbon atoms (the prefix "eth -" is used for two - carbon chains), and the - oic acid suffix denotes the carboxylic acid functional group.
Acetic acid exists in two main forms: the pure glacial acetic acid, which is water - free and has a very low melting point (16.6 °C). At temperatures below this point, it solidifies, giving it an appearance similar to ice, hence the name "glacial". The more common form is the aqueous solution of acetic acid, which is found in vinegar, typically containing about 5 - 20% acetic acid by volume.
Properties of Acetic Acid
Physical Properties:
Acetic acid is a clear, colorless liquid with a pungent, vinegar - like odor. It has a boiling point of approximately 118.1 °C and is miscible with water, ethanol, ether, and other common organic solvents. This high solubility in water is due to the ability of acetic acid to form hydrogen bonds with water molecules through its carboxyl group.
Chemical Properties:
As a carboxylic acid, acetic acid is a weak acid. It donates a proton (H⁺) from its carboxyl group in aqueous solution, but the dissociation is incomplete. The acid dissociation constant (Ka) of acetic acid is approximately 1.8×10⁻⁵ at 25 °C. This means that there is a dynamic equilibrium between acetic acid molecules and its conjugate base, the acetate ion (CH₃COO⁻), in solution.
Acetic acid can react with a variety of substances. For example, it reacts with metals such as sodium to produce hydrogen gas and the corresponding acetate salt. With bases, it undergoes neutralization reactions to form acetate salts and water. It can also participate in esterification reactions with alcohols in the presence of an acid catalyst to form esters, which are widely used in the perfume and flavor industries.
Applications of Acetic Acid
Industrial Applications:
Acetic acid is a vital industrial chemical. It is used in the production of vinyl acetate monomer (VAM), which is a key raw material for the manufacture of a variety of polymers such as polyvinyl acetate (PVA), used in adhesives, paints, and coatings. Another important application is in the production of cellulose acetate, which is used in the manufacture of photographic films, cigarette filters, and textiles.
In the food industry, acetic acid in the form of vinegar is a common condiment. It is also used as a food preservative due to its ability to lower the pH of food products, inhibiting the growth of microorganisms.
Chemical Synthesis:
Acetic acid serves as a key building block in many chemical synthesis processes. It can be used to synthesize a wide range of organic compounds, including various pharmaceuticals, dyes, and solvents. For instance, it can be used in the synthesis of aspirin through the acetylation of salicylic acid.
Comparison with Other Related Chemicals
When comparing acetic acid with other chemicals, we can look at some related substances. For example, High Purity 99.9% Anhydrous Ethanol CAS 64 - 17 - 5 Industrial Grade. Ethanol is an alcohol, while acetic acid is a carboxylic acid. The main difference lies in their functional groups. Ethanol has a hydroxyl group (-OH), while acetic acid has a carboxyl group (-COOH). This difference in functional groups leads to different chemical and physical properties. Ethanol is a volatile liquid with a relatively sweet smell and is more commonly used as a solvent and fuel, while acetic acid has a pungent odor and is mainly used in chemical synthesis and the food industry.
Another related chemical is 1 - octanol. 1 - Octanol – High - Performance Industrial Solvent & Defoamer Additive and Bio - Based 1 - Octanol – Sustainable Raw Material For Cosmetics & Industrial Use are both 1 - octanol products. 1 - octanol is a longer - chain alcohol, and compared to acetic acid, it has a higher molecular weight and is less soluble in water. 1 - octanol is mainly used as a solvent, defoamer, and in the production of plastics and rubber, while acetic acid has a wider range of uses in various industries.
Our Product as a Supplier
As a supplier of CAS 79 - 10 - 7 (acetic acid), we ensure the highest quality of our products. Our acetic acid is produced through a strict manufacturing process that adheres to international quality standards. We offer different grades of acetic acid to meet the diverse needs of our customers, whether it is for industrial manufacturing, food processing, or chemical research.
We understand the importance of timely delivery and reliable service. Our logistics team works efficiently to ensure that our products reach our customers in a timely manner. We also provide technical support to help our customers use our products more effectively and safely.
If you are in need of high - quality acetic acid, we invite you to contact us for further discussions regarding your procurement needs. Our sales team is ready to provide you with detailed product information, pricing, and any other assistance you may require.
Conclusion
Acetic acid, with the CAS number 79 - 10 - 7 and IUPAC name ethanoic acid, is a versatile and important chemical with a wide range of applications in various industries. Its unique physical and chemical properties make it a valuable building block for chemical synthesis and a common ingredient in industrial and consumer products. As a supplier of this key chemical, we are committed to providing high - quality products and excellent service to meet the evolving needs of our customers. Whether you are a large - scale industrial manufacturer or a research institution, we can be your reliable partner in the supply of acetic acid. Contact us today to start a fruitful cooperation.
References
- "The Merck Index: An Encyclopedia of Chemicals, Drugs, and Biologicals", 15th Edition.
- Organic Chemistry textbooks such as "Organic Chemistry" by Paula Yurkanis Bruice.
- Journal articles on acetic acid production, applications, and properties from scientific databases like ScienceDirect and ACS Publications.