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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)

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