ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Determination of nonionic surfactants I

E. Michalská-Kočková

Res. Inst. Water Economy, Brno

Abstract: Surfactants Slovasol O (oxyethylated fatty alcs.), Slovasol OS (highly oxyethylated fatty alcs.) Slovasol SF (low oxyethylated fatty alcs.), Slovasol S (oxyethylated lauryl alc.), Slovasol H (undisclosed structure), Slovasol EL (oxyethylated unsatd. fatty acids), Slovaton Cr (oxyethylated unsatd. fatty alcs.) and Apretar RV (undisclosed structure) were detd. The sample (5-40 mg.) was dild. with H₂O to 100 ml., 10 ml. 10% HCl, 10 ml. 10% aq. BaCl₂, and 10 ml. 5% phosphotungstic acid were added, the soln. was heated to 40%, filtered with dense filter paper, washed with H₂O dried and weighed (Pitter, CA 63, 3173b). Proteins and SO4-- interfere the detn. To improve the results, CaCl₂ was used instead of BaCl₂ in the above procedure and the final ppt. was dissolved in the presence of murexide. The contents of surfactants were obtained from calibration curves in both methods. The mean error of the method is 11.7-31.2% (by Ca detn.).

Full paper in Portable Document Format: 204a281.pdf (in Czech)

Chemical Papers 20 (4) 281–292 (1966)