G. Prakash, T. Mathew
Oct 15, 2010
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Abstract
[2926-30-9] CF3NaO3S (MW 171.06) InChI = 1S/CHF3O3S.Na/c2-1(3,4)8(5,6)7;/h(H,5,6,7);/q;+1/p-1 InChIKey = XGPOMXSYOKFBHS-UHFFFAOYSA-M (sodium salt of 1,1,1-trifluoromethanesulfonic acid) Physical Data: melting point 255–257 °C. Solubility: soluble in water, alcohol, acetonitrile, N,N-dimethylformamide, and most highly polar organic solvents. Form Supplied in: anhydrous sodium 1,1,1-trifluoromethanesulfonate is a white crystalline powder. Handling, Storage, and Precautions: the salt is hygroscopic. Stored in sealed containers under normal conditions. Preparative Methods: sodium trifluoromethanesulfonate is prepared by the addition of a slight excess of sodium sulfate to an aqueous solution of barium trifluoromethanesulfonate (eq 1). Since barium can be easily removed as its insoluble sulfate, barium trifluoromethanesulfonate has been widely used for the preparation of alkali metal and silver trifluoromethanesulfonates. The reaction mixture is stirred for several minutes and allowed to stand for one day, and the white precipitate of barium sulfate is removed by filtration. The clear filtrate is evaporated to dryness, and the solid product is recrystallized from dry acetone. The salt is dried under vacuum at 110 °C.1 Barium trifluoromethanesulfonate can be easily prepared from aqueous trifluoromethanesulfonic acid and barium carbonate. Other methods include the preparation of sodium trifluoromethanesulfinate from sodium dithionite and bromotrifluoromethane and its oxidation to sodium trifluoromethanesulfonate using hydrogen peroxide.2 (1)