Методи контролю тріетаноламінобентоніту і борної мазі, виготовленої з ЕВЗОТ

Abstract

Methods have been worked out of qualitative and quantitative determination of TEAB as well as boric ointment prepared on EWBT. Triethanolamine is qualitatively determined after formation of a purple-violet colour with 5% solution of cobalt chloride and bright blue colour with a saturated solution of copper sulphate solution. The benthonite residue reveals aluminium with 8-oxyquinolin determined by formation of greenish-yellow precipitate of aluminum oxyquinolate. Quantitative determination of TEAB is realized after ethanolamine by the method of Kjeldahl (in the macro- and microvariant). Determination of boric acid in ointment prepared on EWBT was realized after method adopted in the USSR SP-X.