At NINGBO INNO PHARMCHEM CO.,LTD., we believe that a thorough understanding of a chemical's properties is key to its effective application. This article focuses on Acid Blue 40 (CAS 6424-85-7), detailing its key characteristics and the analytical methods used to ensure its quality.

Acid Blue 40, an anthraquinone dye, is recognized for its distinct brown-blue powder appearance. Its chemical formula is C22H16N3NaO6S, with a molecular weight of 473.43 g/mol. A critical parameter for its industrial utility is its purity, with typical assays exceeding 99.0%. This high purity is essential for achieving consistent color intensity and performance in applications such as textile dyeing, food coloration, and cosmetic formulations.

The solubility of Acid Blue 40 is another significant property. It is generally described as water-soluble, which facilitates its use in aqueous dyeing processes and formulations. Its stability across a range of pH conditions, particularly in the acidic range typical for acid dyeing, contributes to its reliability. When manufacturers look to 'order Acid Blue 40', they often require specific data on solubility, stability, and melting point (reported as >300 °C in some sources), which are crucial for process optimization.

Analytical techniques play a vital role in confirming the identity and purity of Acid Blue 40. Techniques such as UV-Vis spectrophotometry are commonly used to determine dye concentration and assess its spectral characteristics, identifying the wavelength of maximum absorbance. High-Performance Liquid Chromatography (HPLC) is often employed to separate and quantify the main compound and any potential impurities, providing a detailed purity profile. Fourier-Transform Infrared (FTIR) spectroscopy can be used to confirm the presence of specific functional groups within the molecule, verifying its structure. For researchers studying its environmental impact, techniques like gas chromatography-mass spectrometry (GC-MS) might be used to identify degradation products.

Ensuring the quality of chemicals like Acid Blue 40 is a cornerstone of our operations at NINGBO INNO PHARMCHEM CO.,LTD. By employing robust analytical methods and maintaining strict quality control, we provide our clients with products they can trust for their diverse applications. If you are seeking to 'buy Acid Blue 40' or require detailed technical specifications, our team is ready to assist.