1-Fluoro-1,2-dichloroethylene430-58-0100 % similar 1-Chloro-1,2-difluoroethylene359-04-647 % similar 1,1-Difluoro-2-chloroethylene359-10-444 % similar Trichloroethylene79-01-639 % similar 1,2-Dichloropropylene563-54-233 % similar 1,2,3-Trichloro-1-propene96-19-532 % similar