Recommended Methods for Purification of Solvents and Tests by J. F. Coetzee

By J. F. Coetzee

Prompt tools for Purification of Solvents and assessments for Impurities is a compilation of urged techniques for purification of solvents and exams for solvent impurities. Ten solvents are coated: acetonitrile, sulfolane, propylene carbonate, dimethyl sulfoxide, dimethylformamide, hexamethylphosphoramide, pyridine, ethylenediamine, N-methylacetamide, and N-methylpropionamide.
This e-book is created from 12 chapters and opens with an creation to basic elements of impurity results. the reason for the choice of solvent is defined, and the relative reactivities of solutes in numerous solvents are defined. the subsequent chapters care for dipolar aprotic solvents (acetonitrile, sulfolane, propylene carbonate, dimethyl sulfoxide, dimethylformamide, hexamethylphosphoramide, and pyridine) for which impurity results might be fairly serious, in addition to their common houses (freezing and boiling temperatures, density, dynamic viscosity, refractive index, dipole second, relative permittivity, etc.) and the common chronology of advancements in purification systems and assessments for purity. the ultimate 3 chapters specialize in amphiprotic solvents (ethylenediamine, N-methylacetamide, and N-methylpropionamide).

This monograph might be an invaluable source for chemists.

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Chem. 37_, 1562 (1965). J. L. Roberts and D. T. Sawyer, J. Electroanal. Chem. % 1 (1965). C. D. Ritchie, G. A. Skinner, and V. G. Badding, J. Amer. Chem. Soc. 89, 2063 (1967). J. F. Coetzee and C. D. Ritchie, in J. F. Coetzee and C. D. , "Solute-Solvent Interactions," Vol. 1, Marcel Dekker, New York, 1969, Appendix, p. 607. C. K. Mann, in A. J. , "Electroanalytical Chemistry," Vol. Ill, Marcel Dekker, New York, 1969, Ch. 2. V. A. Molochko and G. M. Kurdyumov, Khim. Prom. (Moscow) 46, 156 (1970).

Bovey and G. V. D. , "Handbook of Analytical Chemistry," McGraw-Hill, New York, 1963, Section 7. A. Buckley, J. Chem. Ed. 42^, 674 (1965). Chemical and Engineering News, 44, April 11, 48 (1966). J. J. M. Rowe, Κ. B. Gibney, Μ. T. Yang, and G. G. S. Dutton, J. Amer. Chem. Soc. 90, 1924 (1968). 57. Chemical and Engineering News, 43, September 13, 62 (1965). 58. J. F. Coetzee and C. G. Karakatsanis, unpublished results, 1977. Dimethylformamide Prepared for publication by J e a n Juillard Ν,Ν'-Dimethylformamide (DMF) is a good solvent for organic and to a lesser extent inorganic compounds.

The remaining DMSO was very rapidly distilled under vacuum. The product contained some water but only a small amount of other low-boiling impurities. Mann states that a drier product could be obtained by using 5A molecular sieves before distillation. Controlled crystallization has also been used by Molochko and Kurdyumov (Ref. 4 8 ) . The authors employed forced convective mixing of the liquid phase (in a vertical column apparatus) in the crystallization process. 8 cm per hour, the residual impurities content, as determined by gas chromatographic analysis, showed a signficant decrease by this method as compared to crystallization purification without mixing.

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