|
Gas | IDLH | Exposure limits |
|
NO | 100 ppm | NIOSH REL: TWA 25 ppm (30 mg/m3) |
(1 ppm = 1.23 mg/m3) | OSHA PEL: TWA 25 ppm (30 mg/m3) |
|
NH3 | 300 ppm | NIOSH REL: TWA 25 ppm (18 mg/m3) |
(1 ppm = 0.70 mg/m3) | ST 35 ppm (27 mg/m3) |
| OSHA PEL†: TWA 50 ppm (35 mg/m3 ) |
|
CO2 | 40,000 ppm | NIOSH REL: TWA 5000 ppm (9000 mg/m3) |
(1 ppm = 1.80 mg/m3) | ST 30,000 ppm (54,000 mg/m3) |
| OSHA PEL†: TWA 5000 ppm (9000 mg/m3) |
|
PH3 | 50 ppm | NIOSH REL: TWA 0.3 ppm (0.4 mg/m3) |
(1 ppm = 1.39 mg/m3) | ST 1 ppm (1 mg/m3) |
| OSHA PEL†: TWA 0.3 ppm (0.4 mg/m3) |
|
SO2 | 100 ppm | NIOSH REL: TWA 2 ppm (5 mg/m3) |
(1 ppm = 2.62 mg/m3) | ST 5 ppm (13 mg/m3) |
| OSHA PEL†: TWA 5 ppm (13 mg/m3) |
|
H2S | 100 ppm | NIOSH REL: C 10 ppm (15 mg/m3) [10-minute] |
(1 ppm = 1.40 mg/m3) | OSHA PEL†: C 20 ppm |
| 50 ppm [10-minute maximum peak] |
|
CO | 1200 ppm | NIOSH REL: TWA 35 ppm (40 mg/m3) |
(1 ppm = 1.15 mg/m3) | C 200 ppm (229 mg/m3) |
| OSHA PEL†: TWA 50 ppm (55 mg/m3) |
|
NO2 | 20 ppm | NIOSH REL: ST 1 ppm (1.8 mg/m3) |
(1 ppm = 1.88 mg/m3) | OSHA PEL†: C 5 ppm (9 mg/m3) |
|
HCN | 50 ppm | NIOSH REL: ST 4.7 ppm (5 mg/m3) [skin] |
(1 ppm = 1.10 mg/m3) | OSHA PEL†: TWA 10 ppm (11 mg/m3) [skin] |
|
Cl2 | 10 ppm | NIOSH REL: C 0.5 ppm (1.45 mg/m3) [15-minute] |
(1 ppm = 2.90 mg/m3) | OSHA PEL†: C 1 ppm (3 mg/m3) |
|