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 |
|---|---|---|---|---|---|---|
| Silica-Amorphous, Precipitated Silica and Silica Gel | *112926-00-8 | N | EZ22/EZ23N95 2200/2300N95 2600/2700N95 | 20 mppcf (o) or 80 mg/m3 (o) --------------- %SiO2 | 3000 mg/m3 | |
| Silica-Amorphous, Silica-Fused | 60676-86-0 | N | EZ22/EZ23N95 2200/2300N95 2600/2700N95 | 30 mg/m3 (o)** ------------------- %SiO2 +2 or 250 mppcf (o)* --------------------- %SiO2+5 or 10 mg/m3 (o)* -------------------- %SiO2+2 | 3000 mg/m3 | **Total dust *Respirable dust |
| Silica-Crystalline; Quartz* | *14808-60-7 | N | EZ22/EZ23N95 2200/2300N95 2600/2700N95 | 0.25 mg/m3 (t)* quartz 10 mg/m3 (o)* ----------------- %SiO2+2 or 250 mppcf (o)* --------------------- %SiO2+5 or 30 mg (o)/m3** ---------------------- %SiO2+2 | 50 mg/m3 (Crystalline quartz) | t-A2 *Respirable dust **Total dust |
| Silica-Crystalline; Tripoli | 1317-95-9 | N | EZ22/EZ23N95 2200/2300N95 2600/2700N95 | (o) use the value calculated from the formulas for quartz | 50 mg/m3 | |
| Silica-Crystalline (Cristobalite* & Tridymite?) | *14464-46-1, ?15468-32-3 | N | EZ22/EZ23N95 2200/2300N95 2600/2700N95 | (Cristobalite only) 0.025 mg/m3 (t) (Respirable); (o)respirable fraction use 1?2 the value calculated from the formulas (applies to quartz for cristabolite & tridymite.) | 25 mg/m3 | t-A2 |
| Silicon | 7440-21-3 | N | EZ22/EZ23N95 2200/2300N95 2600/2700N95 | 15 mg/m3 (o); total dust Respirable fraction 5 mg/m3 (o) | ||
| Silicon Carbide | 409-21-2 | N | EZ22/EZ23N95 2200/2300N95 2600/2700N95 | 15 mg/m3 (o); Respirable fraction 5 mg/m3 (o) | 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 | |
| Starch | 9005-25-8 | N | EZ22/EZ23N95 2200/2300N95 2600/2700N95 | Total dust 10 mg/m3(t), 15 mg/m3 (o); Respirable fraction 5 mg/m3 (o) | t-A4 | |
| Sucrose | 57-50-1 | N | EZ22/EZ23N95 2200/2300N95 2600/2700N95 | Total dust 10 mg/m3(t), 15 mg/m3 (o); Respirable fraction 5 mg/m3 (o) | t-A4 |
