Tetramethyl plumbane
Pb(CH3)4 / C4H12Pb
Molecular mass: 267.4
ICSC # 0200
CAS # 75-74-1
RTECS # TP4725000
UN # 1649
EC # 082-002-00-1
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Types of Hazard/ Exposure
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Acute Hazards/ Symptoms
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Prevention
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First Aid/
Fire Fighting
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FIRE
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Flammable.
Gives off irritating or toxic fumes (or gases) in a fire.
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NO open flames, NO sparks, and NO smoking.
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Water spray, foam, powder, carbon dioxide.
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Explosion
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Above 37.8°C explosive vapour/air mixtures may be formed.
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Above 37.8°C use a closed system, ventilation, and explosion-proof electrical equipment.
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In case of fire: keep drums, etc., cool by spraying with water.
Combat fire from a sheltered position.
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Exposure
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STRICT HYGIENE!
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IN ALL CASES CONSULT A DOCTOR!
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•Inhalation
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Convulsions.
Dizziness.
Headache.
Nausea.
Unconsciousness.
Symptoms may be delayed (see Notes).
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Ventilation, local exhaust, or breathing protection.
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Fresh air, rest.
Refer for medical attention.
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•Skin
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MAY BE ABSORBED!
(Further see Inhalation).
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Protective gloves.
Protective clothing.
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Remove contaminated clothes.
Rinse and then wash skin with water and soap.
Refer for medical attention.
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•Eyes
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Face shield
or
eye protection in combination with breathing protection.
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First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
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•Ingestion
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Abdominal pain.
Burning sensation.
Diarrhoea.
Dullness.
(Further see Inhalation).
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Do not eat, drink, or smoke during work.
Wash hands before eating.
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Rinse mouth.
Give a slurry of activated charcoal in water to drink.
Refer for medical attention.
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Spillage Disposal
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Storage
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Packaging & Labelling
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Evacuate danger area!
Personal protection: complete protective clothing including self-contained breathing apparatus.
Consult an expert!
Collect leaking and spilled liquid in sealable containers as far as possible.
Absorb remaining liquid in sand or inert absorbent and remove to safe place.
Do NOT let this chemical enter the environment.
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Fireproof.
Separated from
strong oxidants,
strong acids,
food and feedstuffs
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Cool.
Well closed.
Store in an area without drain or sewer access.
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Unbreakable packaging; put breakable packaging into closed unbreakable container.
Do not transport with food and feedstuffs.
Marine pollutant.
Note: A, E, 1
T+ symbol
N symbol
R: 61-26/27/28-33-62-50/53
S: 53-45-60-61
UN Hazard Class: 6.1
UN Packing Group: I
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Important Data
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Physical State; Appearance:
COLOURLESS LIQUID
, WITH CHARACTERISTIC ODOUR.
Physical Dangers:
The vapour is heavier than air.
Chemical Dangers:
May explode on heating above 90°C.
The substance decomposes
on burning
producing
toxic fumes
including
lead, lead oxides.
Reacts
violently with
strong oxidants
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Reacts with strong acids
and
violently with nitric acid.
Attacks rubber.
Occupational Exposure Limits:
TLV: (as lead) 0.15 mg/m3 as TWA; (skin); (ACGIH 2005).
MAK: 0.05 mg/m3
Peak limitation category: II(2);
skin absorption (H);
Pregnancy risk group: D;
(DFG 2004).
OSHA PEL: TWA 0.075 mg/m3 skin
NIOSH REL: TWA 0.075 mg/m3 skin
NIOSH IDLH: 40 mg/m3 (as Pb) See: 75741
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Routes of Exposure:
The substance can be absorbed into the body
by inhalation,
through the skin
and
by ingestion.
Inhalation Risk:
A harmful contamination of the air can be reached very quickly on evaporation of this substance at 20°C.
Effects of Short-Term Exposure:
The substance may cause effects on the central nervous system
, resulting in brain disorders.
The effects may be delayed.
Exposure may result in death.
Medical observation is indicated.
Effects of Long-Term or Repeated Exposure:
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Physical
Properties
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Boiling point at 1.33 kPa: 110°C
Melting point: -27.5°C
Relative density (water = 1): 2.0
Solubility in water: none
Vapour pressure, kPa at 20°C: 3.0
Relative vapour density (air = 1): 6.5
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Relative density of the vapour/air-mixture at 20°C (air = 1): 1.23
Flash point: 37.8°C c.c.
Auto-ignition temperature: 254°C
Explosive limits, vol% in air: 1.8-?
Octanol/water partition coefficient as log Pow: 6.2
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Environmental
Data
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The substance is very toxic to aquatic organisms.
Bioaccumulation of this chemical may occur along the food chain, for example in molluscs and fish.
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N O T E S
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Commercial products are impure, coloured red, orange or blue, with added stabilizer (1,2-dichloroethane, toluene).
Depending on the degree of exposure, periodic medical examination is suggested.
The relation between odour and the occupational exposure limit cannot be indicated.
Do NOT take working clothes home.
Transport Emergency Card: TEC (R)-61S1649
NFPA Code: H 3; F 3; R 3;
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ADDITIONAL INFORMATION
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ICSC: 0200
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TETRAMETHYL LEAD
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(C) IPCS, CEC, 1994
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IMPORTANT LEGAL NOTICE:
Neither NIOSH, the CEC or the IPCS nor any person acting on behalf of NIOSH,
the CEC or the IPCS is responsible for the use which might be made of this
information. This card contains the collective views of the IPCS Peer Review Committee and may
not reflect in all cases all the detailed requirements included in national legislation
on the subject. The user should verify compliance of the cards with the relevant legislation
in the country of use.
The only modifications made to produce the U.S. version is inclusion of the OSHA PELs, NIOSH RELs and NIOSH IDLH values.
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