The activity of these compounds against E.typhosa is considerably below that already reported for cetyltriethylammonium bromide and cetyltri-M-butylammonium bromide. Summary N -Carbamylmethyl, N-carbethoxymethyl and Nß-acetoxyethyl derivatives of several quaternary ammonium compounds containing one Ncetyl or N-lauryl group and three low molecular weight N-alkyl radicals were prepared. The germicidal activity of these compounds was studied, and in some, cases the effect on the activity of different anions was tested.In the N-lauryl group of compounds the germicidal activity was improved by the substitution of a carbethoxymethyl or /3-acetoxyethyl group for an original N-methyl radical. In the N-cetyl group the reverse was true. The halide salts and the nitrate all gave about the same activity. Organic anions usually lowered the activity of the compound. Cincinnati, Ohio

The iodine values of marine oils were directly calculated from fatty acid profiles by using reacting ratios (calculation factors) between I 2 (iodine) and either the fatty acids bound to a triglyceride or the free fatty acids. A total of 20 factors were incorporated from C14:1 to C24:1, placed into an Excel® spreadsheet, and used to calculate the iodine values. The calculated values were then compared to the oil's iodine value obtained by the traditional titration method. The results indicate that this method can be used to obtain the iodine value of marine oils directly from the oil's fatty acid composition, thus giving two results from one analysis.

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