Tetramethyl lead (as Pb)
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Synonyms & Trade Names
Lead tetramethyl, Tetramethylplumbane, TMLExposure Limits
NIOSH REL
TWA 0.075 mg/m3 [skin]OSHA PEL
TWA 0.075 mg/m3 [skin]Physical Description
Colorless liquid (unless dyed red, orange, or blue) with a fruity odor. [Note: Main usage is in anti-knock additives for gasoline.]Molecular Weight
267.3Boiling Point
212°F (Decomposes)Freezing Point
-15°FSolubility
0.002%Vapor Pressure
23 mmHgIonization Potential
8.50 eVSpecific Gravity
2.00Flash Point
100°FUpper Exposive Limit
?Lower Explosive Limit
?Incompatibilities & Reactivities
Strong oxidizers such as sulfuryl chloride or potassium permanganateExposure Routes
inhalation, skin absorption, ingestion, skin and/or eye contactSymptoms
insomnia, bad dreams, restlessness, anxious; hypotension; nausea, anorexia; delirium, mania, convulsions; comaTarget Organs
central nervous system, cardiovascular system, kidneysPersonal Protection/Sanitation
(See protection codes)Skin:Prevent skin contact (>0.1%)
Eyes:Prevent eye contact
Wash skin:When contaminated (>0.1%)
Remove:When wet or contaminated (>0.1%)
Change:Daily
Provide:Quick drench (>0.1%)
First Aid
(See procedures)Eye:Irrigate immediately
Skin:Soap wash immediately
Breathing:Respiratory support
Swallow:Medical attention immediately
Respirator Recommendations
NIOSH/OSHA
Up to 0.75 mg/m3:
(APF = 10) Any supplied-air respirator
Up to 1.875 mg/m3:
(APF = 25) Any supplied-air respirator operated in a continuous-flow mode
Up to 3.75 mg/m3:
(APF = 50) Any supplied-air respirator that has a tight-fitting facepiece and is operated in a continuous-flow mode
(APF = 50) Any self-contained breathing apparatus with a full facepiece
(APF = 50) Any supplied-air respirator with a full facepiece
Up to 40 mg/m3:
(APF = 1000) Any supplied-air respirator operated in a pressure-demand or other positive-pressure mode
Emergency or planned entry into unknown concentrations or IDLH conditions:
(APF = 10,000) Any self-contained breathing apparatus that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode
(APF = 10,000) Any supplied-air respirator that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode in combination with an auxiliary self-contained positive-pressure breathing apparatus
Escape:
(APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted organic vapor canister
Any appropriate escape-type, self-contained breathing apparatus
- Page last reviewed:April 11, 2016
- Page last updated:April 11, 2016
- Content source:
- National Institute for Occupational Safety and Health (NIOSH) Education and Information Division