This article provides an in-depth overview of Acid Red 18 (CAS 2611-82-7), a widely used azo dye. It covers its chemical properties, applications, safety concerns, regulatory status, and environmental impact. By exploring these aspects, the article aims to equip readers with comprehensive knowledge about this dye, highlighting its significance in various industries and the importance of understanding its potential risks and regulations.
Acid Red 18, also known as Acid Red 18A, is a synthetic azo dye that is commonly used in the textile, pharmaceutical, and food industries. It is characterized by its vibrant red color and is known for its excellent colorfastness. This dye is classified under the CAS number 2611-82-7 and is widely recognized for its applications in various products.
Acid Red 18 is a water-soluble dye that is produced through the condensation of aniline and nitrobenzene derivatives. It has a molecular formula of C16H10N2Na2O7S and a molecular weight of 410.36 g/mol. The dye is known for its strong affinity for cellulose fibers, making it a popular choice in the textile industry. Its chemical structure consists of a diazo group and a sulfonic acid group, which contribute to its vibrant red color and water solubility.
Acid Red 18 finds extensive use in various industries due to its vibrant color and excellent colorfastness. In the textile industry, it is used to dye cotton, wool, and silk fabrics, providing them with a rich red hue. It is also used in the pharmaceutical industry to color tablets and capsules, ensuring easy identification. Additionally, Acid Red 18 is utilized in the food industry as a food coloring agent, enhancing the appearance of various food products.
While Acid Red 18 is widely used, it is important to consider its potential health risks. Studies have shown that certain azo dyes, including Acid Red 18, can be metabolized into potentially harmful substances. These substances have been associated with various health issues, such as allergic reactions, skin irritation, and even cancer. Therefore, it is crucial to handle Acid Red 18 with care and follow proper safety protocols to minimize exposure.
The regulatory status of Acid Red 18 varies by country. In the United States, the Food and Drug Administration (FDA) has approved its use as a food coloring agent, subject to certain limitations. However, in the European Union, Acid Red 18 is classified as a potential carcinogen and is restricted in its use in food products. It is important for manufacturers and consumers to be aware of these regulations to ensure compliance and safety.
The environmental impact of Acid Red 18 is a significant concern. The dye is known to be persistent in the environment and can accumulate in aquatic ecosystems. This can lead to adverse effects on aquatic life and the overall ecosystem. Proper disposal and treatment of Acid Red 18-containing waste are essential to minimize its environmental impact.
In conclusion, Acid Red 18 (CAS 2611-82-7) is a widely used azo dye with various applications in the textile, pharmaceutical, and food industries. While it offers vibrant color and excellent colorfastness, it is important to be aware of its potential health risks, regulatory status, and environmental impact. By understanding these aspects, manufacturers, consumers, and regulatory authorities can ensure the safe and responsible use of Acid Red 18.
Keywords: Acid Red 18, CAS 2611-82-7, azo dye, chemical properties, applications, safety concerns, regulatory status, environmental impact
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