Article R4412-149 of the French Labour Code
The concentrations of the chemical agents present in the atmosphere of the workplaces listed in the following table must not exceed, in the workers’ breathing zone, the occupational exposure limit values defined below: Name Number EC (1) Number CAS (2) Occupational exposure limit value Occupational exposure limit value Comments Transitional measures 8h (3) short term (4) mg/ m3 (5) ppm (6) fibres per cm3 mg/ m3 ppm fibres per cm3…