Stabilization of fluorinated ketones

Abstract

Fluorinated ketones, for example, 1,1,1-trifluoroacetone, can be stabilized against storage degradation by combining with a content of hexafluoroisopropanol (HFIP). Containers containing the stabilized mixture show prolonged storage times compared to containers containing the fluorinated ketones alone. The stabilized mixture can be used as a starting material for reactions requiring fluorinated ketones, for example, 1,1,1-trifluoroacetone, as a starting material.

1. A composition stabilized against degradation during storage, said composition comprising (a) a content of a fluorinated ketone and (b) a content of hexafluoroisopropanol (HFIP) that is effective to stabilize said content of fluorinated ketone against degradation during storage. 
     
     
       2. The composition according to  claim 1 , wherein the fluorinated ketone is 1,1,1-trifluoroacetone. 
     
     
       3. The composition according to  claim 1 , wherein the content of fluorinated ketone in said composition ranges from about 80% to about 99.99% by weight; and the amount of HFIP in said composition ranges from about 0.01% to about 20% by weight. 
     
     
       4. The composition according to  claim 3 , wherein the amount of HFIP in said composition ranges from about 0.4% to about 15% by weight. 
     
     
       5. The composition according to  claim 4 , wherein the amount of HFIP in said composition ranges from about 0.5% to about 6% by weight. 
     
     
       6. A container containing a content of a composition according to any one of claims  1 - 5 . 
     
     
       7. The container according to  claim 6 , which is metal. 
     
     
       8. A method of stabilizing a content of a fluorinated ketone against degradation, said method comprising combining said content of said fluorinated ketone with a content of HFIP that is effective to stabilize said content of fluorinated ketone against degradation during storage. 
     
     
       9. The method according to  claim 8 , wherein the fluorinated ketone is 1,1,1-trifluoroacetone. 
     
     
       10. The method according to  claim 8 , wherein the content of fluorinated ketone ranges from about 80% to about 99.99% by weight of a composition comprising both the fluorinated ketone and the HFIP; and the amount of HFIP in said composition ranges from about 0.01% to about 20% by weight. 
     
     
       11. The method according to  claim 10 , wherein the amount of HFIP in said composition ranges from about 0.4% to about 15% by weight. 
     
     
       12. The method according to  claim 11 , wherein the amount of HFIP in said composition ranges from about 0.5% to about 6% by weight. 
     
     
       13. A process comprising reacting a fluorinated ketone with at least one other chemical, wherein the fluorinated ketone is provided to said reacting in the form of a composition according to  claim 1 . 
     
     
       14. The process according to  claim 13 , wherein the fluorinated ketone is 1,1,1-trifluoroacetone.