Journal of China Pharmaceutical University 2001;(3):203-205

Studies on the Non-isothermal Decomposition Kinetics of Vitamin B6

Donghua CHEN ; Jian ZHANG ; Wang ZOU ; Wanjun TANG

Country

China

Language

Chinese

Abstract

AIM　The purpose is to study the non-isothermal decomposition process and mechanics of vitamin B6. METHOD　The TG technique was used to observe between 30～700℃. RESULTS　The decomposition of vitamin B6 was performed by two stages. Vitamin B6 loses HCl at the first stage together with losing H2O. The kinetic equation obtained was dα/dt=A*e-E/RT*1/2(1-α)3; activation energy obtained was 325.27 kJ/mol; and preexponential factor A obtained was 7.22×1032/s as well. CONCLUSION　Vitamin B6 is rather thermal stable, and it loses HCl together with losing H2O at temperature range of 173℃～271℃.