title: Determination of polyethylene glycols by precipitation with iodine.
abstract: Two methods for the determination of polyethylene glycols (PEGs) in aqueous solution by precipitation with iodine have been developed. For PEGs with molecular weight 4 x 10(3)-2 x 10(4) the excess of iodine is titrated with thiosulphate, and for PEGs with average m.w. > 2 x 10(4) turbidimetric measurement is used. Both methods are relatively simple and give accurate and reproducible results.
authors.affiliation: Laboratorium Galenische en Magistrale Farmacie, Medische en Speciale Biochemie, Vrije Universiteit Brussel, Laarbeeklaan, 103, 1090 Brussels, Belgium.
authors.forename: M
authors.initials: M
authors.lastname: Francois
authors.forename: R
authors.initials: R
authors.lastname: De Neve