Methyl Red Sodium Salt, identified by CAS number 845-10-3, is a cornerstone chemical for many laboratories, primarily recognized for its utility as a pH indicator. This azo dye exhibits a distinct and reliable color transition from red in acidic conditions (below pH 4.4) to yellow in alkaline conditions (above pH 6.2), with an orange hue in between. This characteristic makes it an indispensable tool for chemists performing acid-base titrations, where precisely identifying the equivalence point is crucial for accurate quantification.

Beyond its role in titrations, Methyl Red Sodium Salt finds significant application in microbiology. It is a key component in the Voges-Proskauer (VP) test, used to differentiate bacteria based on their ability to produce stable acids through mixed acid fermentation of glucose. For instance, bacteria like Escherichia coli are typically Methyl Red positive, while Enterobacter aerogenes is Methyl Red negative. This distinction is vital for bacterial identification and classification in clinical and environmental settings.

For professionals seeking to buy high-quality Methyl Red Sodium Salt, understanding its specifications and sourcing it from a reputable manufacturer is paramount. As a leading supplier in China, we offer this chemical with guaranteed purity and consistency, ensuring dependable results for your critical assays. Whether you need it for routine laboratory analysis or specialized microbiological studies, our product meets rigorous standards. We encourage you to request a quote for competitive pricing and explore our capabilities as your trusted chemical partner.