cas no 139 07 1

A Comprehensive Overview of CAS No. 139-07-1 Sodium Acetate

CAS No. 139-07-1 refers to sodium acetate, a sodium salt of acetic acid. It is a colorless, hygroscopic solid that is highly soluble in water and has a wide variety of applications across different industries. Its molecular formula is C2H3NaO2, and it is often represented as CH3COONa. The compound is utilized in food, pharmaceuticals, and chemical manufacturing due to its versatile properties.

Chemical Properties

Sodium acetate has several important chemical characteristics. It has a molar mass of 82.03 g/mol, and its melting point is around 583 degrees Celsius. When dissolved in water, sodium acetate dissociates into sodium ions (Na+) and acetate ions (CH3COO-). This dissociation imparts a mildly salty flavor, making it useful as a food additive. Because of its ability to act as a buffer solution, sodium acetate is often employed in laboratories and various chemical processes.

Production Methods

Sodium acetate can be produced through various methods. One common method involves reacting acetic acid with sodium bicarbonate or sodium carbonate. The reaction produces sodium acetate, carbon dioxide, and water

\[ \text{CH}_3\text{COOH} + \text{NaHCO}_3 \rightarrow \text{CH}_3\text{COONa} + \text{CO}_2 + \text{H}_2\text{O} \]

This reaction highlights the relationship between sodium acetate and sodium bicarbonate, showcasing the reversible nature of their chemical interactions.

1. Food Industry Sodium acetate is widely used as a food preservative and flavoring agent. It is often found in processed foods, snacks, and canned goods, enhancing flavor while prolonging shelf life. The compound can also be utilized in the preparation of some cheeses, where it helps to adjust acidity levels and improve texture.

2. Pharmaceuticals In the pharmaceutical industry, sodium acetate is employed for its buffering capabilities. It is used in injectable formulations and intravenous fluids to help maintain pH levels, ensuring that medications remain effective and safe for patient use. Moreover, due to its low toxicity, it serves as an effective component in various medicinal applications.

3. Chemical Manufacturing Sodium acetate is instrumental in the synthesis of various fine chemicals. It serves as an intermediate in the production of acetic acid and other derivatives. It is also utilized in the manufacturing of dyes and in textile processing. Its role as a catalyst in certain reactions enhances efficiency and yield.

4. Heating Pads One of the more innovative applications of sodium acetate is in reusable heating pads. Sodium acetate can undergo a phase change that releases heat when crystallized. This property is harnessed in heating pads that can be activated by clicking a metal disk inside the pad, allowing for warmth and comfort in various scenarios, including sports injuries and general muscle relaxation.

Safety Considerations

Sodium acetate is generally recognized as safe when used in food applications. However, excessive consumption may lead to sodium overload, which can be concerning for individuals with certain health conditions, such as hypertension. In laboratory settings, safety data sheets should be reviewed when handling the substance since concentrated solutions can irritate the skin and eyes.

Conclusion

Sodium acetate, with the CAS number 139-07-1, exhibits versatile properties that make it invaluable across numerous industries. From its use as a food additive to its applications in pharmaceuticals and chemical manufacturing, sodium acetate continues to play a significant role in enhancing product quality and safety. As researchers continue to explore new applications and methodologies for sodium acetate, its relevance in modern science and industry will undoubtedly grow. Its ease of production, safety profile, and beneficial properties render it a compound worth understanding and utilizing in various sectors.