The utility of Methyl Red Hydrochloride in various scientific disciplines is rooted in its fascinating chemical properties and distinct reactions. As a derivative of Methyl Red, this compound is an organic dye belonging to the azo class, characterized by the presence of the azo group (–N=N–). Its molecular formula, C15H15N3O2·HCl, signifies its structure as the hydrochloride salt of Methyl Red, which enhances its solubility and handling characteristics for laboratory use. Understanding the chemical properties of Methyl Red is key to appreciating its function. The compound typically presents as a red crystalline powder. While Methyl Red itself has limited solubility in water, its hydrochloride salt exhibits improved solubility in water and ethanol, making it more convenient for preparing indicator solutions and for use in aqueous media. The most significant property of Methyl Red Hydrochloride is its behavior as a pH indicator. It undergoes a reversible color change based on the pH of the surrounding environment. In solutions with a pH below 4.4, it displays a vibrant red color. As the pH increases, it transitions through orange and finally to yellow in solutions with a pH above 6.2. This distinct color shift makes it an invaluable tool for monitoring and controlling pH in chemical processes and analyses. The Methyl Red chemical properties are thus central to its application in everything from simple titrations to complex microbiological assays. When considering how to use Methyl Red test in microbiology, the understanding of its pH sensitivity is crucial. Similarly, in chemical analysis, precise knowledge of its transition range allows for accurate endpoint detection. For researchers looking to buy Methyl Red Hydrochloride, understanding these chemical nuances ensures they select the correct grade and form for their specific experimental needs. The ability to buy Methyl Red Hydrochloride online from reputable sources further facilitates access to this vital chemical compound, supporting a wide range of scientific investigations.