Actas de congresos
Use Of Cumene Hydroperoxide As An End-point Indicator In The Titration Of Bases By Catalytic Thermometric Titrimetry
Analyst. , v. 115, n. 6, p. 761 - 763, 1990.
Raimundo Jr. I.M.
Neto de G.O.
The use of the decomposition reaction of cumene hydroperoxide for indication of the end-point of the titration of organic bases with perchloric acid was investigated. The rise in temperature at the end-point is of the order of 25°C. Only strong bases can be determined when the titrand solvent is acetic acid - acetic anhydride (92 + 8 v/v), but even weak bases such as caffeine can be determined in 1,2-dichloroethane. Some titration curves resulting from titration of bases with boron trifluoride (a Lewis acid) are presented.1156761763