ChemicalBook CAS DataBase List Sodium trifluoromethanesulfonate

Sodium trifluoromethanesulfonate synthesis

11synthesis methods

Product Name:Sodium trifluoromethanesulfonate
CAS Number:2926-30-9
Molecular formula:CF3NaO3S
Molecular Weight:172.06

Sodium trifluoromethanesulfonate is prepared by adding a slight excess of sodium sulfate to an aqueous solution of barium trifluoromethanesulfonate. 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 trifluoromethane sulfonate from sodium dithionite and bromotrifluoromethane and its oxidation to sodium trifluoromethane sulfonate using hydrogen peroxide.

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Yield:2926-30-9 1100 g

Reaction Conditions:

with sodium hydroxide;calcium oxide in water; under 1500.15 - 7500.75 Torr; for 9.5 h;

Steps:

3; 5 Example 3

875 g of a 32.0% aqueous solution of sodium hydroxide, 424 g of calcium oxide and 580 g of high purity water were successively added to a 316L stainless steel reaction vessel, and the temperature was raised to 85 ° C and the mixture was stirred for 3 hours. Then, the trifluoromethane sulfonyl fluoride gas was continuously introduced into the reaction vessel, Controlling the reaction pressure to be between 0.2 MPa and 1.0 MPa; stopping the ventilation when the mass of ventilation is 980 g of trifluoromethanesulfonyl fluoride, the ventilation time is 4 hours, then keeping the reaction for 2.5 hours, then lowering the temperature to 25 DEG C; The filtrate was filtered to obtain an aqueous solution of sodium trifluoromethanesulfonate. The concentration of sodium trifluoromethanesulfonate was 47.55%, pH = 14, F = 7 ppm, and ICP was 0.5 ppm and 0.14 ppm respectively. Fluoride ion concentration <10ppm, Fe <1ppm, Ni <1ppm, indicating that the reaction of 316L stainless steel corrosion, the method greatly reduces the corrosion of equipment, equipment can greatly extend the service life and maintenance costs.

References:

CN105693561,2016,A Location in patent:Paragraph 0028; 0031

421-83-0 Synthesis