Methyl perfluoroisobutyl ether Cas 163702-08-7
This product  is  a  mild  solvent  used  in  refreshing  cosmetic  formulations.  It  is  a fluorine-containing ether solvent that is compatible with many ingredients and is considered  to  have   good  lubricity  and  is  very   suitable  as  a  solvent  for  oily formulations.