A rapid method for the determination of polyols by dichromate oxidation,spectrophotometric measurement of Cr (III)

A rapid and accurate method is described for the determination of small quantities of polyhydroxy compounds by the spectrophotometric measurement of Cr(III) produced by the reduction of dichromate in 50% sulfuric acid. The method is probably applicable also to many other organic reducing agents. Duplicate determinations require only 30 minutes. The maximum standard deviation for any of the six compounds investigated was 0.90% of the polyol content.