Abstract
Two structurally similar azo dyes, Direct Blue No. 6 and Direct Blue No. 15, are analyzed by separate reversed-phase high-performance liquid chromatographic (HPLC) systems utilizing a dual-wavelength UV/visible detector at 254 and 546 nm. Each dye contains more than 35 impurity peaks. Different lots of each dye are compared by means of their respective chromatographic profiles. The system used to obtain a chromatographic profile for each dye is adapted to make comparisons of the major component in different lots by an internal standard method. These methods are reproducible, giving relative standard deviations ranging from approximately 1 to 5%. These HPLC systems are adaptable for the analysis of other structurally similar dyes.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
