NAME: Tetramethyl Lead (as Pb)
SYNONYM(s):
TML; Lead tetramethyl; Motor fuel anti-knock compound;
Lead, organic
IMIS: 2370
CAS: 75-74-1
NIOSH: RTECS TP4725000
DOT: 1649 56
DESCRIPTION:
Colorless liquid or dyed red, orange, or blue with a slight musty
odor.
MW:
267
BP:
230 F
VP:
22 mm
MP:
-22 F
INCOM:
Strong oxidizers, such as sulfuryl chloride or potassium
permanganate
Exposure Limits
OSHA GENERAL INDUSTRY PEL:
0.075 mg/m3 (Skin)
OSHA CONSTRUCTION INDUSTRY PEL:
0.15 mg/m3 TWA (Skin)
ACGIH TLV:
0.15 mg/m3 TWA (Skin)
NIOSH REL: 0.075 mg/m3 TWA (Skin)
Health Factors
IARC:
Lead and Lead Compounds, Organolead - Group 3, not classifiable as to
its carcinogenicity to humans
SYMPTOM(s):
Insomnia, bad dreams, restlessness, anxiety; hypotension; nausea,
anorexia; delirium, mania; convulsions; coma
HEALTH EFFECTS:
Cumulative liver and kidney damage (HE3)
Cumulative CNS damage (HE7); Acute CNS effects (HE4)
ORGAN:
CNS, CVS, kidneys
Monitoring
PRIMARY SAMPLING/ANALYTICAL METHOD (SLC1):
MEDIA:
Glass Fiber Filter in series with a Charcoal Tube (100/50 mg sections, 20/40 mesh)
MAX V:
480 Liters MIN V:
240 Liters MAX F:
1.0 L/min
ANL 1:
Atomic Absorption Spectroscopy; AAS
REF:
2 (OSHA In-House File)
CLASS:
Partially Validated
NOTE:
Submit as a separate sample. When analysis of a compound is requested, an elemental analysis (from charcoal tube)is performed and reported as lead.
MEDIA:
Glass Fiber Filter (37 mm) in series with an XAD-2 Tube (100/50 mg sections, 20/50 mesh)
MAX V:
200 Liters MIN V:
30 Liters MAX F:
1.0 L/min
ANL 1:
Gas Chromatography; GC/PID
REF:
1 (NIOSH 2534)
CLASS:
Partially Validated
WIPE:
Yes, with Whatman Smear Tab filter. SOLVENT: Distilled Water. (See
note - reported as total lead)
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