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 |
|---|---|---|---|---|---|---|
| Barium Sulfate | 7725-43-7 | N | EZ22/EZ23N95 2200/2300N95 2600/2700N95 | Total dust 10mg/m3 (t), 15mg/m3 (o); Respirable fraction 5mg/m3 (o) | Total dust containing no Asbestos and <1% Crystalline Silica | |
| Plaster of Paris | 26499-65-0 | N | EZ22/EZ23N95 2200/2300N95 2600/2700N95 | Total dust 10 mg/m3 (t)* 15 mg/m3 (o); Respirable fraction 5 mg/m3 (o) | Total dust containing no Asbestos and <1% Crystalline Silica measured as inhalable fraction of aerosol | |
| Calcium Silicate (synthetic) (non-fibrous) | 1344-95-2 | N | EZ22/EZ23N95 2200/2300N95 2600/2700N95 | Total dust 15 mg/m3 (o) 10 mg/m3 (t); Respirable fraction 5 mg/m3 (o) | Total dust containing no Asbestos and <1% Crystalline Silica, t-A4 | |
| Soapstone | N | EZ22/EZ23N95 2200/2300N95 2600/2700N95 | Total dust 20 mppcf (o); Respirable fraction 3 mg/m3 (t) 6 mg/m3 (t) inhalable | 3,000 mg/m3 | Total dust containingno Asbestos and <1% Crystalline Silica | |
| Trichloronapthalene | 1321-65-9 | OV/N | 7100+8910 8100+8910 | 5 mg/m3 (o)(t); -skin- | 20mg/m3 | Use 8940 when particulate is present |
| p-Phenylene Diamine | 106-50-3 | OV/N | 7100+8910 8100+8910 | 0.1 mg/m3 (o)(t); -skin- | 25 mg/m3 | Use supplied air if heat is involved; t-A4 |
| Methyl Mercaptan | 74-93-1 | OV | 7100 8100 | 0.5 ppm (t); 10 ppm (c)-(o) | 150 ppm | Very short service life |
