S. Das et Vv. Kumar, FTIR SPECTROSCOPIC DETERMINATION OF ETHYLENE-OXIDE CONTENT OF NONIONIC SURFACTANTS, Indian journal of chemistry. Sect. A: Inorganic, physical, theoretical & analytical, 32(11), 1993, pp. 1004-1005
A simple, rapid and accurate FTIR spectroscopic method for the determi
nation of the ethylene oxide (EO) content of nonionic surfactants is p
resented. The ratio of peak heights appearing at 720 cm-1 and 843 cm-1
shows a linear increase with increase in EO content of straight chain
alcohol ethoxylates. This ratio is a good indicator of the average EO
content of nonionic surfactants.