Abstract
For the investigation of the influence of various substances on “Methylene Blue Partition Backtitration Method”, (published since Vol.9, No.3, Yukagaku), the titration of anionics was carried out with the following additives.Sodium carbonate, borax, sodium pyrophosphate, sodium hexametaphosphate, sodium heptapoly-phosphate, sodium chloride, sodium sulfate, and tetrasodium ethylenediamine tetraacetate (EDTA (Na4)) show no effect on the titration. In the presence of CMC, over 40% of anionics, the titration is interfered by the formation of stable emulsion, but under 30%, there is no difficulties.
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