Quantitative estimation as acetic acid of acetyl, ethylidene, ethoxy, and alpha-hydroxyethyl groups.

摘要: Kuhn and L'Orsa's method for estimating terminal methyl similar groups was based on the recovery of acetic acid formed when such units were oxidized with hot concentrated chromic solution. The has now been reduced to semimicro scale refined point where good analyses acetyl, ethylidene, ethoxy, α-hydroxyethyl in a variety substances are obtained. Acetylated triphenylmethyl cellulose ethers, which do not seem amenable customary acetyl analyses, give results by present procedure.