Isolation and characterization of the tertiary amine Alamine 304 hydrochloride. Its application on the extraction of Co(II), Au(III) and Pt(IV)

Abstract

Amine Alamine 304 dissolved in xylene reacts with hydrochloric acid to form the amine chloride (R3NH+Cl-) and the amine dichloride (R3NH2Cl2). The former compound was isolated and characterized by chemical analysis, X-ray powder diffraction, infrared spectroscopy and scanning electron microscopy. Lattice parameters of the isolated amine chloride were determined and refined by least-square numerical treatment (monoclinic cell, with a = 29.017(4) angstroms, b = 14.564(7) angstroms, c = 5.043(1) angstroms, b = 95.68(3)° and V = 2,120 angstroms3). The amine chloride is a potential anion-exchanger with metals, thus data on the liquid-liquid extraction of Co(II), Au(III) and Pt(IV) are also reported.