KINETIC STUDY OF VITAMIN C DEGRADATION FROM PHARMACEUTICAL PRODUCTSê

Two simple procedures for the determination of ascorbic acid (Vitamin C) content in a Vitamin C tablet are proposed: conductometry and titrimetric method with potassium bromat-bromide solution in the acid medium. The procedures have been applied to the analysis of locally commercial Vitamin C tablet samples. The variations of Vitamin C concentration were studied in formation of temperature. For the kinetic study was determinate the rate constant, the half-time and the activation energy for vitamin C.