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While widely recognized for its application in staining calcium deposits, Alizarin Red S (CAS 130-22-3) also possesses valuable properties as a pH indicator. This anthraquinone dye exhibits distinct color transformations across a specific pH range, making it a useful tool for qualitative and quantitative pH determination in various chemical analyses. Understanding these colorimetric properties is essential for researchers and chemists seeking reliable indicators for their experiments and industrial processes.
Alizarin Red S typically displays a yellow hue in acidic solutions, shifting to a more violet or purplish color as the pH increases towards alkaline conditions. This transition is not abrupt but occurs over a defined pH range, often cited around pH 4.3 to 6.3. The exact pH range and the clarity of color change can be influenced by factors such as temperature and the presence of other ions. As a supplier of high-purity Alizarin Red S, we ensure that our product's indicator properties are consistent and reliable for these analytical applications. Researchers can buy Alizarin Red S with confidence, knowing it will perform as expected.
The utility of Alizarin Red S as a pH indicator extends to various analytical procedures, including titrations where the endpoint needs to be visually identified. Its use in conjunction with other analytical techniques can also provide complementary data. For instance, its ability to chelate with metal ions and change color can be leveraged in spectrophotometric determinations of certain metals, where pH control is critical. The dye’s relatively stable nature further enhances its suitability for these applications.
As a leading manufacturer and supplier of specialty chemicals, we offer Alizarin Red S that is rigorously tested for its indicator properties. For those looking to buy Alizarin Red S for their laboratory or industrial pH monitoring needs, our product provides an effective and cost-efficient solution. We provide comprehensive technical specifications and are available to discuss your specific application requirements. Partnering with a dependable supplier ensures you have access to quality chemical reagents that facilitate accurate and efficient analysis.
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