Raymond Boucher et al.
AIHA journal : a journal for the science of occupational and environmental health and safety, 64(1), 68-79 (2003-02-07)
1,1-Dichloro-2,2,2-trifluoroethane (HCFC-123) was evaluated as a substitute for trichlorofluoromethane (CFC-11), and it appeared that a permissible exposure limit of 50 ppm was justified. When HCFC-123 was introduced as a precision cleaning agent in a controlled operation, marked elevations in serum