Kinetic detection of the end-point in titrations involving slow reactions Direct titration of polyhydroxy-compounds with periodate.
A new titration technique is described in which the end-point is determined by measuring the relative reaction rate of the titration reaction. This technique is adequate for rather slow reactions where conventional direct titrations are not applicable. The titrations are done automatically under microcomputer control. The efficiency of this technique is demonstrated with direct titrations of certain polyhydroxy-compounds with standard periodate solution. Ethylene glycol and propylene glycol (0.05-0.3 mmole), glycerol (0.06-0.17 mmole) and mannitol (0.01-0.03 mmole) were determined with average relative errors of 0.1-0.3%.
Efstathiou
C E
CE
Laboratory of Analytical Chemistry, University of Athens, 104 Solonos St., Athens 144, Greece.
Hadjiioannou
T P
TP