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- W2255019949 abstract "A method is described for determining ethanolamines in lubricating emulsions. The ethanolamine is partitioned into an aqueous phase, reacted with Cu{sup 11} to form a blue solution and the concentration is determined spectrophotometrically. The wavelengths of maximum absorption ranged from 625-680 nm. Recoveries ranged from 94%-101% and the RSD for the method averaged 4%. The analytical procedures are simple, do not require expensive instrumentation, and are readily adaptable to routine analyses. The absorption spectra of the complexes can be a useful tool in determining the class of amine alcohol present in unknown emulsions. Results of the subject method are also compared with alkalinity measurements via potentiometric titrations. 9 refs., 2 figs., 4 tabs." @default.
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- W2255019949 date "1995-08-01" @default.
- W2255019949 modified "2023-09-26" @default.
- W2255019949 title "Spectrophotometric determination of ethanolamines in lubricating emulsions{copyright}" @default.
- W2255019949 hasPublicationYear "1995" @default.
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