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TETRAETHYL LEAD
ICSC: 0008
Peer-Review Status: 27.11.2003 Validated
Tetraethyl plumbane
Lead tetraethyl
TEL
CAS #: 78-00-2 RTECS #: TP4550000
UN #: 1649
EC #: 082-002-00-1
EINECS #: 201-075-4
    Formula: Pb(C2H5)4
Molecular mass: 323.45

TYPES OF HAZARD
/ EXPOSURE
ACUTE HAZARDS / SYMPTOMS PREVENTION FIRST AID / FIRE-FIGHTING
FIRE Combustible.  NO open flames.  Use water spray, powder, foam, carbon dioxide. 
EXPLOSION Above 93°C explosive vapour/air mixtures may be formed.  Above 93°C use a closed system and ventilation.  Combat fire from a sheltered position. 
 
EXPOSURE   PREVENT GENERATION OF MISTS! STRICT HYGIENE! AVOID ALL CONTACT! AVOID EXPOSURE OF ADOLESCENTS AND CHILDREN!  IN ALL CASES CONSULT A DOCTOR! 
Inhalation Convulsions. Dizziness. Headache. Vomiting. Weakness. Unconsciousness.  Use ventilation, local exhaust or breathing protection.  Fresh air, rest. Refer for medical attention. 
Skin MAY BE ABSORBED! Redness. Further see Inhalation.  Protective gloves. Protective clothing.  Remove contaminated clothes. Rinse and then wash skin with water and soap. Refer for medical attention . 
Eyes Redness. Pain. Blurred vision.  Wear face shield or eye protection in combination with breathing protection.  First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention. 
Ingestion Convulsions. Diarrhoea. Dizziness. Headache. Vomiting. Weakness. Unconsciousness.  Do not eat, drink, or smoke during work. Wash hands before eating.  Rinse mouth. Give a slurry of activated charcoal in water to drink. Refer for medical attention . 

SPILLAGE DISPOSAL
PACKAGING & LABELLING
Evacuate danger area! Consult an expert! Personal protection: complete protective clothing including self-contained breathing apparatus. Ventilation. Do NOT let this chemical enter the environment. Collect leaking and spilled liquid in sealable containers as far as possible. Absorb remaining liquid in sand or inert absorbent. Then store and dispose of according to local regulations.  Unbreakable packaging.
Put breakable packaging into closed unbreakable container.
Severe marine pollutant. 
EC Classification
Symbol: T+, N; R: 61-26/27/28-33-50/53-62; S: 53-45-60-61; Note: A, E, 1 for preparations 
UN Classification
UN Hazard Class: 6.1; UN Pack Group: I 
GHS Classification
 

EMERGENCY RESPONSE SAFE STORAGE
Transport Emergency Card: TEC (R)-61S1649.
NFPA Code: H3; F2; R3. 
Fireproof. Separated from strong oxidants and acids. Keep in the dark. Ventilation along the floor. Store in an area without drain or sewer access. 

IMPORTANT DATA
Physical State; Appearance
COLOURLESS VISCOUS LIQUID WITH CHARACTERISTIC ODOUR. 

Physical dangers
The vapour is heavier than air. 

Chemical dangers
Decomposes on heating. This produces toxic fumes. Reacts violently with strong oxidants, acids and halogens. This generates fire and explosion hazard. Attacks rubber, some forms of plastic and coatings. 

Occupational exposure limits
TLV (as Pb): 0.1f/cc as TWA; (skin); A4 (not classifiable as a human carcinogen); (ACGIH 2003).
MAK: 0.05 mg/m³; Peak limitation category: II(2); Pregnancy risk group: B; Skin absorption (H); (DFG 2008). 

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 rather quickly on evaporation of this substance at 20°C. 

Effects of short-term exposure
The substance is irritating to the eyes, skin and respiratory tract. The substance may cause effects on the central nervous system. This may result in unconsciousness. Exposure at high levels could cause death. Medical observation is indicated. 

Effects of long-term or repeated exposure
The substance may have effects on the central nervous system. May cause toxicity to human reproduction or development. 


PHYSICAL PROPERTIES ENVIRONMENTAL DATA
Decomposes at >110°C
Melting point: -136.8°C
Relative density (water = 1): 1.7
Solubility in water: very poor
Vapour pressure, kPa at 20°C: 0.027
Relative vapour density (air = 1): 8.6
Relative density of the vapour/air-mixture at 20°C (air = 1): 1.00
Flash point: 93°C c.c.
Auto-ignition temperature: ~110°C
Explosive limits, vol% in air: 1.8-?
Octanol/water partition coefficient as log Pow: 4.15  
The substance is very toxic to aquatic organisms. The substance may cause long-term effects in the aquatic environment. It is strongly advised not to let the chemical enter into the environment. 

NOTES
Tetraethyl lead used as an anti-knock compound in gasoline also contains ethylene dibromide and ethylene dichloride as impurities.
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.
Card has been partially updated in January 2008: see Storage; Physical Properties. 

ADDITIONAL INFORMATION
 

IPCS
International
Programme on
Chemical Safety
WHO ILO EC Prepared in the context of cooperation between the International Programme on Chemical Safety and the European Commission
© IPCS 2004-2012
LEGAL NOTICE Neither the EC nor the IPCS nor any person acting on behalf of the EC or the IPCS is responsible for the use which might be made of this information.
    See Also:
       Toxicological Abbreviations