MOLYBDENUM, SOLUBLE COMPOUNDS†
| CAS # | 7439-98-7 |
|---|---|
| Formula |
Mo |
| Synonyms |
molybdenum metal |
| Physical description | Dark gray or black powder with a metallic luster. | ||
|---|---|---|---|
| Boiling point | 8717°F | Molecular weight | 95.9 |
| Freezing point/melting point | 4752°F | Vapor pressure | 0 mmHg (approx) |
| Flash point | Vapor density | ||
| Specific gravity | 10.28 | 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 | |||
| Analyte code (IMIS no.) | 1791 |
|---|---|
| Sampling group | |
| Sampler/Sampling media | Mixed cellulose ester filter (MCEF) 0.8 micron (37 mm) and filter spacer with Na₂CO₃ impregnated backup pad, in a 3-piece cassette [SKC 225-9001] |
| Sampling time* | 240 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 ID-125G (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. Analysis for this analyte is based on water solubility. |
| Special requirements |
|
* 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 Sampler/Sampling media |
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|---|---|
| Bulk Method |
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| Device | |||||
|---|---|---|---|---|---|
| Model/Type | |||||
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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 |
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|---|---|---|---|---|---|---|---|
| PEL-TWA |
5 mg/m³ |
REL-TWA |
|
TLV-TWA |
0.5 mg/m³ (respirable particulate matter) [1999] |
PEL-TWA |
0.5 mg/m³ |
| PEL-STEL |
|
REL-STEL |
|
TLV-STEL |
|
PEL-STEL |
|
| PEL-C |
|
REL-C |
|
TLV-C |
|
PEL-C |
|
| Skin notation |
N |
Skin notation |
NA |
Skin notation |
N |
Skin notation |
N |
| Notes: | Notes: |
Notes:
|
Notes:
See footnote [n]. |
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| Health factors: See NIH-NLM PubChem. | IDLH |
1000 mg/m³ |
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| Carcinogenic classifications: TLV-A3 |
Notes:
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AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:
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Additional Resources and Literature References
|
NOAA: CAMEO Chemicals - Molybdenum NIOSH: Pocket Guide to Chemical Hazards - Molybdenum (soluble compounds, as Mo) Literature References
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Last Updated Date : 01/05/2021