January 2025

Erythrosine is a red dye commonly used as a color additive in foods, cosmetics, and pharmaceuticals. Erythrosine is a synthetic dye that is cherry pink or red, also known as Red No. 3 or FD&C Red No. 3. In this blog, we provide a basic understanding of Erythrosine Color – Acid Red 51 and various uses of Erythrosine color. If you are wondering what is Erythrosine and what its uses are, you have landed in the right place. In popular foods and beverages, Erythrosine Color – red dye 3 is a synthetic dye made from petroleum, also known as erythrosine.  Despite very little research, the coloring agent became the first to be approved in 1907. As of today, the use of Erythrosine Color is widespread for a diverse range of applications, including food, drugs, and cosmetics. What is Erythrosine Color – Acid Red 51? Erythrosine, also known as Acid Red 51 or FD&C Red No.3, is a red dye widely used in a variety of industries, including food, pharmaceuticals, and cosmetics. Erythrosine is derived from petroleum and was first approved in 1907. It is a derivative of Erythrosine and an organoiodine compound. Due to health concerns, the use of Erythrosine color or

A dye is an organic substance that can impart color to various substrates after it is absorbed into them. Dyes can be natural or synthetic. Chemical bonds are formed between dye molecules and surfaces, causing the dye molecules to become a part of the material. In this article, we will discuss Eosin dye and its applications in different industrial applications.  Xanthene is a class of dyes divided into three groups called subgroups and each subgroup has its subgroup name. The use of dyes is widespread in a comprehensive range of applications, including food, pharmaceutical, cosmetics, plastics, textile, inks, paint, leather, and paper industries. Eosin is an acidic orange-pink dye that provides very strong staining properties.  Hematoxylin and Eosin Y (H and E) are one of the most widely used techniques in histopathology laboratories. If are you still wondering what is Eosin dye and understand the synthetic application of Eosin Y in a variety of industries, continue reading this guide further. What is Eosin Dye? Eosin is a fluorescent dye, a xanthene dye also known as red dye produced with the reaction between bromine and fluoresce- which further ties up to salts with eosinophilic compounds that have positive charges. Typically, H&E staining uses

Phloxine B, or simply phloxine, also known as Acid Red No. 92 and D&C Red No. 28, is a color additive used as an inactive ingredient to impart color to certain substances or products and as a colorant in various dental disclosing tablets. Phloxine B is a water-soluble red dye that is approved and permitted for use in coloring drugs and cosmetics in the United States and coloring foods in Japan. This blog will talk about Phloxine B (D&C Red No. 28) and help you understand the classifications, uses, and mechanism of action.  Phloxine B, or simply phloxine, is a derivative of fluorescein. However, it differentiates the presence of four bromine atoms at positions 2, 4, 5, and 7 of the xanthene ring and four chlorine atoms in the carboxyphenyl ring. This water-soluble dye has an absorption maximum of around 540 nm and an emission maximum near 564 nm.  Phloxine B is widespread as an antimicrobial substance & functions as a viability dye and biological stain. That means it could also be utilized in hematoxylin-phloxine-saffron (HPS) staining to color the cytoplasm and connective tissue in shades of red. If you are an industrial or enthusiastic chemist wondering what is phloxine B