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Exploring the Properties and Applications of Chemical Compound with CAS Number 139-07-1

CAS No. 139-07-1 A Comprehensive Overview of Ethyl Orange

Ethyl Orange, designated by the Chemical Abstracts Service (CAS) number 139-07-1, is a synthetic dye that is widely used in various applications, primarily as a pH indicator. It is part of a broader category of azo dyes and possesses unique properties that make it valuable in both laboratory settings and industries such as textiles and food.

Chemical Structure and Properties

Ethyl Orange is an azo dye characterized by the presence of the azo group (-N=N-) that links two aromatic compounds. Its chemical formula is C16H18N3O3S, which indicates that it contains a sulfonic acid group, contributing to its solubility in water. This water solubility is crucial because it allows Ethyl Orange to function effectively as a pH indicator.

The dye exhibits a vibrant orange color, which changes to yellow as the pH of the solution decreases. Specifically, Ethyl Orange has a pH transition range of about 3.1 to 4.4, making it a suitable indicator for acidic conditions. This capacity to signify changes in pH through color alteration is particularly useful in laboratory titrations and other chemical analyses.

Applications

1. Laboratory Use Ethyl Orange is extensively employed in laboratories due to its effectiveness as an acid-base indicator. It is commonly used in titrations of strong acids against strong bases and in a variety of other chemical assays where identifying the endpoint of a reaction is essential.

2. Industrial Applications In the textile industry, Ethyl Orange is used for dyeing fabrics, providing vibrant colors that are both appealing and durable. Additionally, it finds use in food coloring, where it imparts an appealing orange hue to various products while ensuring compliance with safety regulations.

cas no 139 07 1

3. Molecular Biology Ethyl Orange also has applications in molecular biology, particularly in the analysis of nucleic acids. It can be used to stain DNA in gel electrophoresis, aiding in the visualization of DNA fragments.

Safety and Environmental Concerns

While Ethyl Orange is highly useful, it is essential to consider safety measures when handling this chemical. It is classified as a mild irritant and may cause skin or eye irritation upon contact. Adequate personal protective equipment (PPE) should be utilized during its handling, including gloves and safety goggles.

Furthermore, there are environmental considerations associated with the use of azo dyes like Ethyl Orange. Some azo compounds can be metabolized in the body to form potentially hazardous amines, which raises concerns regarding their safety in food applications and waste disposal. It is imperative to follow industry regulations for the safe use and disposal of such substances.

Conclusion

Ethyl Orange (CAS No. 139-07-1) stands out as a versatile and vital substance in various scientific and industrial fields. Its role as a pH indicator, along with its applications in dyeing and molecular biology, underscores its significance. As with any chemical, responsible handling and adherence to safety protocols are crucial to mitigate potential risks. As research progresses and regulations evolve, Ethyl Orange continues to be an essential tool in laboratories worldwide, demonstrating the ongoing importance of synthetic dyes in modern science and industry.

In summary, Ethyl Orange exemplifies the functional and aesthetic applications of chemical compounds in our daily lives. Its vibrant color not only serves a practical purpose but also enhances the visual appeal of numerous products, reflecting the intricate relationship between chemistry and the world around us.

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