ICSC 0200 - TETRAMETHYL LEAD

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TETRAMETHYL LEAD	ICSC: 0200 (April 2024)
Tetramethyl plumbane

CAS #: 75-74-1

UN #: 1649

EC Number: 200-897-0

	ACUTE HAZARDS	PREVENTION	FIRE FIGHTING
FIRE & EXPLOSION	Flammable. Gives off irritating or toxic fumes (or gases) in a fire. Above 37.8°C explosive vapour/air mixtures may be formed.	NO open flames, NO sparks and NO smoking. Above 37.8°C use a closed system, ventilation and explosion-proof electrical equipment.	Use water spray, foam, powder, carbon dioxide. In case of fire: keep drums, etc., cool by spraying with water. Combat fire from a sheltered position.

STRICT HYGIENE! AVOID ALL CONTACT! PREVENT GENERATION OF MISTS! IN ALL CASES CONSULT A DOCTOR!
	SYMPTOMS	PREVENTION	FIRST AID
Inhalation	Headache. Dizziness. Weakness. Vomiting. Convulsions. Nausea. Unconsciousness. Symptoms may be delayed. See Notes.	Use ventilation, local exhaust or breathing protection.	Fresh air, rest. Refer immediately 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 immediately for medical attention .
Eyes	Redness.	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	Headache. Dizziness. Weakness. Vomiting. Convulsions. Diarrhoea. Unconsciousness. Further see Inhalation.	Do not eat, drink, or smoke during work. Wash hands before eating.	Rinse mouth. Refer immediately for medical attention.

SPILLAGE DISPOSAL	CLASSIFICATION & 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 liquid in sealable containers. Absorb remaining liquid in sand or inert absorbent. Then store and dispose of according to local regulations.	According to UN GHS Criteria DANGER Flammable liquid and vapour Fatal if swallowed, in contact with skin or if inhaled May cause damage to nervous system through prolonged or repeated exposure May damage fertility or the unborn child Very toxic to aquatic life with long lasting effects Transportation UN Classification UN Hazard Class: 6.1; UN Pack Group: I
STORAGE
Fireproof. Store only in original container. Well closed. Separated from strong oxidants, strong acids and food and feedstuffs. Store in an area without drain or sewer access. Provision to contain effluent from fire extinguishing.
PACKAGING
Put breakable packaging into closed unbreakable container. Do not transport with food and feedstuffs. Severe marine pollutant.

TETRAMETHYL LEAD

ICSC: 0200

PHYSICAL & CHEMICAL INFORMATION
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. Decomposes on burning. This produces toxic fumes including lead and lead oxides. Reacts violently with strong oxidants. Reacts with strong acids. Reacts violently with nitric acid. Attacks rubber.	Formula: Pb(CH₃)₄ / C₄H₁₂Pb Molecular mass: 267.4 Boiling point at 1.33kPa: 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 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 Viscosity: 0.571 mm²/s

PHYSICAL & CHEMICAL INFORMATION

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. Decomposes on burning. This produces toxic fumes including lead and lead oxides. Reacts violently with strong oxidants. Reacts with strong acids. Reacts violently with nitric acid. Attacks rubber.

Formula: Pb(CH₃)₄ / C₄H₁₂Pb
Molecular mass: 267.4
Boiling point at 1.33kPa: 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
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
Viscosity: 0.571 mm²/s

EXPOSURE & HEALTH EFFECTS
Routes of exposure The substance can be absorbed into the body by inhalation, through the skin and by ingestion. Effects of short-term exposure The substance may cause effects on the central nervous system. This may result in nervous disorders and unconsciousness. The effects may be delayed. Exposure could cause death. Medical observation is indicated.	Inhalation risk A harmful contamination of the air can be reached very quickly on evaporation of this substance at 20°C. Effects of long-term or repeated exposure The substance may have effects on the nervous system. This may result in mental and memory disturbances, nervous system impairment, peripheral nerve damage and cardiac disorders. May cause toxicity to human reproduction or development.

EXPOSURE & HEALTH EFFECTS

Routes of exposure
The substance can be absorbed into the body by inhalation, through the skin and by ingestion.

Effects of short-term exposure
The substance may cause effects on the central nervous system. This may result in nervous disorders and unconsciousness. The effects may be delayed. Exposure could cause death. Medical observation is indicated.

Inhalation risk
A harmful contamination of the air can be reached very quickly on evaporation of this substance at 20°C.

Effects of long-term or repeated exposure
The substance may have effects on the nervous system. This may result in mental and memory disturbances, nervous system impairment, peripheral nerve damage and cardiac disorders. May cause toxicity to human reproduction or development.

OCCUPATIONAL EXPOSURE LIMITS
TLV: 0.15 mg/m³, as TWA; (skin). MAK: (as Pb): 0.004 mg/m³, ppm; peak limitation category: II(1); skin absorption (H); pregnancy risk group: A; germ cell mutagen group: 3A; carcinogen category: 4

ENVIRONMENT
The substance is very toxic to aquatic organisms. Bioaccumulation of this chemical may occur along the food chain. 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
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.

ADDITIONAL INFORMATION

EC Classification

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