TETRAMETHYL LEAD (as Pb)†
| CAS # | 75-74-1 |
|---|---|
| Formula |
C₄H₁₂Pb |
| Synonyms |
lead tetramethyl; tetramethylplumbane; TML |
| Physical description | Colorless liquid (unless dyed red, orange, or blue) with a fruity odor. | ||
|---|---|---|---|
| Boiling point | 230°F at 10 mmHg (decomposes above 212°F) | Molecular weight | 267.33 |
| Freezing point/melting point | -17.5°F | Vapor pressure | 23 mmHg |
| Flash point | 100°F | Vapor density | 6.5 |
| Specific gravity | 1.995 | Ionization potential | 8.50 eV |
| Lower explosive limit (LEL) | 1.8% | Upper explosive limit (UEL) | |
| NFPA health rating | 2 | NFPA fire rating | 3 |
| NFPA reactivity rating | 3 | NFPA special instruction | W: Reacts violently or explosively with water. |
| Vapor hazard ratio (VHR) | |||
| Historical exceedance percentage | |||
| Target organs | |||
| Analyte code (IMIS no.) | 2370 | ||
|---|---|---|---|
| Sampling group | |||
| Sampler/Sampling media | XAD-2 tube (400/200 mg) [SKC 226-30-06] | ||
| Sampling time* | |||
| Sampling volume (TWA)* | 15-100 L |
||
| Sampling flow rate (TWA)* | 0.01 - 0.2 L/min |
||
| Sampling volume (STEL/Peak/C)* | |||
| Sampling flow rate (STEL/Peak/C)* | |||
| Analytical method instruments | GC-PID | ||
| Method reference | NIOSH 2534 (fully validated) | ||
| Notes | |||
| 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 | |
|---|---|
| Bulk Method |
| 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 |
0.075 mg/m³ |
REL-TWA |
0.075 mg/m³ |
TLV-TWA |
0.15 mg/m³ [1992] |
PEL-TWA | |
| PEL-STEL | REL-STEL | TLV-STEL | PEL-STEL | ||||
| PEL-C | REL-C | TLV-C |
0.075 mg/m³ [1992] |
PEL-C | |||
| Skin notation |
Y |
Skin notation |
Y |
Skin notation |
Y |
Skin notation |
Y |
|
Notes:
See 29 CFR 1910.1000 Table Z-1. OSHA Construction and Maritime Industry PELs are 0.15 mg/m³. See 29 CFR 1926.55 Table 1 and 29 CFR 1915.1000 Table Z-Shipyards. |
Notes: | Notes: | Notes: | ||||
| Health factors: See NIH-NLM PubChem. | IDLH |
40 mg/m³ |
|||||
| Carcinogenic classifications: IARC-3 | Notes: | ||||||
| AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3: | |||||||
Additional Resources and Literature References
|
NOAA: CAMEO Chemicals - Tetramethyllead NIOSH: Pocket Guide to Chemical Hazards - Tetramethyl lead (as Pb) Literature References
|
Last Updated Date : 06/03/2022