Also Called: Tetrachlorofluoroethane (Hcfc-121);1,1,2,2-Tetrachloro-1-fluoroethane;1-Fluorotetrachloroethane;Ethane, 1,1,2,2-tetrachloro-1-fluoro-;(HCFC‑121);Hcfc-121;Tetrachlorofluoroethane;1,1,2,2-Tetrachloro-1-fluoroethane (HCFC-121);เอชซีเอฟซี-121