MERCURY (ARYL & INORGANIC COMPOUNDS)†
| Chemical Identification | |
|---|---|
| CAS # | 7439-97-6 |
| Formula |
Hg |
| Synonyms |
Synonyms vary depending upon the specific inorganic or aryl mercury compound. |
| Physical Properties | |||
|---|---|---|---|
| Physical description | An odorless, silvery metallic liquid. | ||
| Boiling point | 674°F | Molecular weight | 200.6 |
| Freezing point/melting point | -38°F | Vapor pressure | 0.0012 mmHg |
| Flash point | Vapor density | ||
| Specific gravity | 13.55 | Ionization potential | |
| Lower explosive limit (LEL) | Upper explosive limit (UEL) | ||
| NFPA health rating | NFPA fire rating | ||
| NFPA reactivity rating | NFPA special instruction | ||
| Vapor hazard ratio (VHR) | |||
| Historical exceedance percentage | |||
| Target organs | |||
| Monitoring Methods Used by OSHA | ||||||
|---|---|---|---|---|---|---|
| Analyte code (IMIS no.) | M111 | |||||
| Sampling group | ||||||
| Sampler/Sampling media | Pre-assembled cassette with mixed cellulose ester filter (MCEF) 0.8 micron (37 mm) [MAWP037A0] | |||||
| Sampling time* |
5 min |
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| Sampling volume (TWA)* |
10 L |
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| Sampling flow rate (TWA)* |
2 L/min |
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| Sampling volume (STEL/Peak/C)* |
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| Sampling flow rate (STEL/Peak/C)* |
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| Analytical method instruments | CVAA | |||||
| Method reference | OSHA ID-145 (fully validated) | |||||
| Notes | Results are provided for the presence and amount or concentration of a specific element or elements. The stated identity of the actual sample contents (such as specific form, valence state, or compound) is based on the assumption that the material sampled is as identified by the compliance officer using available documentation of materials and processes.
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| Special requirements |
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* 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.
| Wipe Method | |
|---|---|
| Sampler/Sampling media |
|
| Bulk Method |
|---|
|
Available |
| On-Site Screening Techniques | ||||||
|---|---|---|---|---|---|---|
| Device | ||||||
| Model/Type | ||||||
|
Sampling information (see manufacturer instructions) |
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| Exposure Limits | |||||||
|---|---|---|---|---|---|---|---|
|
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 |
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| PEL-TWA |
|
REL-TWA |
0.05 mg/m³ (Hg vapor) |
TLV-TWA |
0.1 mg/m³ (aryl compounds), 0.025 mg/m³ (elemental and inorganic forms), [1991] |
PEL-TWA |
0.025 mg/m³ |
| PEL-STEL |
|
REL-STEL |
|
TLV-STEL |
|
PEL-STEL |
|
| PEL-C |
0.1 mg/m³* |
REL-C |
0.1 mg/m³ |
TLV-C |
|
PEL-C |
0.1 mg/m³* |
| Skin notation |
N |
Skin notation |
Y |
Skin notation |
Y |
Skin notation |
Y |
| Notes: |
Notes:
|
Notes:
BEI® (elemental and inorganic forms) |
Notes:
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| Health factors: See NIH-NLM PubChem. | IDLH |
10 mg/m³ |
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| Carcinogenic classifications: TLV-A4 (elemental and inorganic forms), IARC-2B |
Notes:
as Hg |
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|
AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:
--/0.25 ppm/0.5 ppm |
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| Additional Resources and Literature References |
|---|
|
NOAA: CAMEO Chemicals - Mercury NIOSH: Pocket Guide to Chemical Hazards - Mercury compounds [except (organo) alkyls] (as Hg) Literature References
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Last Updated Date : 01/04/2021