eng Oriental Scientific Publishing Company Biosciences Biotechnology Research Asia 0973-1245 2016-01-29 3 2 383 386 5292 article T. Sathish 1 U. Kiran Babu 2 K. Kishore Kumar 3 S. Sujatha 4 Ch. Balasekhar Reddy 5 Department of Biotechnology, Mallareddy College of Engineering, Secunderabad - 500 014 (India) Department of Biotechnology, Godavari Institute of Technology, Rajamendry (India) Department of Chemical Engineering, Andhra University, Visakhapatnam – 530 003 (India) Department of Pharmaceutical Sciences, Mallareddy College of Pharmacy, Secunderabad - 500 014(India) Department of Pharmaceutical Sciences, G. Pulla Reddy College of Pharmacy, Hyderabad-500 028 (India) Simple, accurate, rapid and sensitive spectrophotometric methods have been reported for the estimation of Ambroxol using, (I) 3-methyl 2 benzo thiazoline hydrazine hydrochloride(MBTH) in the presence of cerric- ammonium sulphate and (II) 3 methyl 2 benzothiazoline hydrazine hydrochloride(MBTH) in the presence of Ferric chloride. The violet colour chromogens were formed and these were measured at wavelength of maximum absorption 575nm against reagent blanks. https://www.biotech-asia.org/vol3no2/novel-spectrophotometric-methods-for-the-determination-of-ambroxol-hydrochloride/ Ambroxol hydrochloride ;cerric ammonium sulphate; spectrophotometer; Beer’s Law