1,1,2-TRICHLORO-2-FLUOROETHANE 1-Fluoro-1,2,2-trichloroethane 134237-34-6 2-Fluoro-1,1,2-trichloroethane 359-28-4 Ethane, 1,1,2-trichloro-2-fluoro- HCFC 131 R 131 R 131 (refrigerant)