ARSENIC, INORGANIC COMPOUNDS (as As)‡
CAS # | 7440-38-2 |
---|---|
Formula |
As |
Synonyms |
arsenic metal; arsenia; others vary depending upon the specific arsenic compound. |
Physical description | Silver-gray or tin-white metal, brittle odorless solid. | ||
---|---|---|---|
Boiling point | 1135°F (sublimes) | Molecular weight | 74.92 |
Freezing point/melting point | 1135°F (sublimes) | Vapor pressure | 0 mmHg (approx) |
Flash point | Vapor density | ||
Specific gravity | 5.73 (metal) | Ionization potential | |
Lower explosive limit (LEL) | Upper explosive limit (UEL) | ||
NFPA health rating | 3 | NFPA fire rating | 2 |
NFPA reactivity rating | 0 | NFPA special instruction | |
Vapor hazard ratio (VHR) | |||
Historical exceedance percentage | |||
Target organs |
Analyte code (IMIS no.) | 0260 (high sensitivity) | ||
---|---|---|---|
Sampling group | METALSSG-1 | ||
Sampler/Sampling media | Pre-assembled cassette with mixed cellulose ester filter (MCEF) 0.8 micron (37 mm) [MAWP037A0] | ||
Sampling time* | 240-480 min |
||
Sampling volume (TWA)* | 480-960 L |
||
Sampling flow rate (TWA)* | 2 L/min |
||
Sampling volume (STEL/Peak/C)* | |||
Sampling flow rate (STEL/Peak/C)* | |||
Analytical method instruments | ICP | ||
Method reference | OSHA 5003 (fully validated) | ||
Notes | The METALSSG-1 sampling group members are analyzed using Inductively Coupled Plasma-Mass Spectrometry (ICP-MS) to target the expanded standards metals As, Cd, and Pb with high sensitivity (clean samples and smear tabs only). If arsenic is the only analyte of interest, use the single analyte code 0260. If the filter is not overloaded, samples may be collected up to an 8-hour period. If As, Cd, Cu, Fe, Pb or Zn are detected, results will be provided. |
||
Special requirements | For volatile arsenic compounds, a sodium carbonate-impregnated BUP is required in conjunction with the MCE filter [225-9001]. |
* All sampling instructions above are recommended guidelines for OSHA Compliance Safety and Health Officers (CSHOs), please see the corresponding OSHA method reference for complete details.
Sampler/Sampling media | Wipe with Whatman smear tab. [WHA1450993] |
---|
Bulk Method |
---|
Available |
Device | |||||
---|---|---|---|---|---|
Model/Type | |||||
Sampling information (see manufacturer instructions) |
OSHA PEL
8-hour TWA (ST) STEL (C) Ceiling Peak |
NIOSH REL
Up to 10-hour TWA (ST) STEL (C) Ceiling |
ACGIH TLV©
8-hour TWA (ST) STEL (C) Ceiling |
|||||
---|---|---|---|---|---|---|---|
PEL-TWA |
10 µg/m³ [5 µg/m³ Action Level] |
REL-TWA | TLV-TWA |
0.01 mg/m³ (as As) [1990] |
PEL-TWA |
0.01 mg/m³ [0.005 mg/m³ Action Level] |
|
PEL-STEL | REL-STEL | TLV-STEL | PEL-STEL | ||||
PEL-C | REL-C |
0.002 mg/m³ [15 minutes] |
TLV-C | PEL-C | |||
Skin notation |
N |
Skin notation |
N |
Skin notation |
N |
Skin notation |
N |
Notes: |
Notes:
CARCINOGEN (Ca): REDUCE EXPOSURE TO LOWEST FEASIBLE CONCENTRATION. See Appendix A, NIOSH Potential Occupational Carcinogens. |
Notes:
BEI®. TLV for lead arsenate (3687-31-8) was withdrawn for insufficient data in 2009. |
Notes: | ||||
Health factors: See NIH-NLM PubChem. | IDLH |
5 mg/m³ |
|||||
Carcinogenic classifications: EPA-A, IARC-1, NIOSH-Ca, NTP-K, OSHA-Ca, TLV-A1 |
Notes:
Ca |
||||||
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3: |
Additional Resources and Literature References |
NOAA: CAMEO Chemicals - Arsenic NIOSH: Pocket Guide to Chemical Hazards - Arsenic (Inorganic compounds, as As) Literature References
|
Last Updated Date : 12/17/2020