Chemical Respiratory Guide
Chemical Agent
CAS Number
Chemical Respiratory ChartDownload a printable version
| Chemical Name | CAS Number | Filter Type | Suggested Product | TLV(t) PEL(o) | IDLH | Comments |
|---|---|---|---|---|---|---|
| Mercury Inorganic Compounds (as Hg) (except Alkyls) | 7439-97-6 | N | EZ22/EZ23N95 2200/2300N95 2600/2700N95 | 0.025 mg/m3(t); 0.1 mg/m3 (c)-(o); -skin- | 10 mg/m3 | For dust with no vapor pressure; t-A4 |
| Mercury, Aryl Compounds (as Hg) | N | EZ22/EZ23N95 2200/2300N95 2600/2700N95 | 0.1 mg/m3 (t); 0.1 mg/m3 (c)-(o); -skin- | For dust with no vapor pressure; Substance for which ACGIH BEI exists | ||
| Mica (less than 1% quartz) | 12001-26-2 | N | EZ22/EZ23N95 2200/2300N95 2600/2700N95 | 20 mppcf (o);** 3 mg/m3 (t)* | 1,500 mg/m3 | Does not include strearates of toxic metals; *Respirable; Particulate containing no Asbestos and <1% Crystalline Silica ** <1% Silica |
| Molybdenum - Soluble Compounds - Inorganics only (as Mo) | 7439-98-7 | N | EZ22/EZ23N95 2200/2300N95 2600/2700N95 | 5 mg/m3 (o) .5 mg/m3 (t)* {water soluble} | 1,000 mg/m3 (as Mo) | *Respirable fraction; t-A3 |
| Molybdenum - Insoluble Compounds and Metal Dust – Inorganics only (as Mo) | 7439-98-7 | N | EZ22/EZ23N95 2200/2300N95 2600/2700N95 | 10 mg/m3 (t)** 15 mg/m3 (o)* 3 mg/m3 (t)*** | 5,000 mg/m3 (as Mo) | *Total dust; ***respirable fraction and **inhalable fraction |
| 1,1,2,2-Tetrabromoethane | 79-27-6 | 7100 8100 | 1.4ppm (t)* 1ppm (o) | 8ppm | Measured as inhalable fraction and vapors | |
| Sulfur Dioxide | 7446-09-5 | AG | 7200 8200 | 5 ppm (o); 2 ppm (t); 5 ppm (s)-(t) | 100 ppm | t-A4; ACGIH NIC to 0.25 (c) |
| Chlorine | 7782-50-5 | AG | 7200/8200 7300/8300 7600/8600 | 0.5 ppm (t); 1 ppm (c)(s)-(o)(t) | 10 ppm | Chemical goggles required when using a half mask, t-A43 |
| Chlorine Dioxide | 10049-04-4 | AG | 7200/8200 7600/8600 | 0.1 ppm (t)(o); 0.3 ppm (s)-(t) | 5 ppm | Chemical goggles required when using a half mask |
| Hydrogen Bromide | 10035-10-6 | AG | 7200 8200 | 3 ppm (o) 2 ppm (c)-(t) | 30 ppm |
