p-Methyl styrene
1-Ethenyl-4-methylbenzene
p-Vinyl toluene
CH3C6H4CH=CH2 / C9H10
Molecular mass: 118.2
ICSC # 0735
CAS # 622-97-9
RTECS # WL5076000
UN # 2618
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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.
Heating will cause rise in pressure with risk of bursting.
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NO open flames.
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Water spray, foam, powder, carbon dioxide.
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Explosion
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Above 52.8°C explosive vapour/air mixtures may be formed.
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Above 52.8°C use a closed system, ventilation, and explosion-proof electrical equipment.
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In case of fire: keep cylinder cool by spraying with water.
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Exposure
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PREVENT GENERATION OF MISTS!
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•Inhalation
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Dizziness.
Drowsiness.
Dullness.
Headache.
Sore throat.
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Ventilation, local exhaust, or breathing protection.
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Fresh air, rest.
Artificial respiration may be needed.
Refer for medical attention.
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•Skin
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Dry skin.
Redness.
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Protective gloves.
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Rinse and then wash skin with water and soap.
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•Eyes
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Redness.
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Safety spectacles.
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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.
Nausea.
Vomiting.
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Do not eat, drink, or smoke during work.
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Rinse mouth.
Do NOT induce vomiting.
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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Ventilation.
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.
Personal protection: self-contained breathing apparatus.
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Separated from
strong oxidants,
strong acids.
Well closed.
Keep in a well-ventilated room.
Store only if stabilized.
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Marine pollutant.
UN Hazard Class: 3
UN Packing Group: III
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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:
The substance may polymerize
due to warming
with fire or explosion hazard.
Reacts with strong oxidants and strong acids.
Occupational Exposure Limits:
TLV: 50 ppm as TWA, 100 ppm as STEL; A4 (not classifiable as a human carcinogen); (ACGIH 2004).
MAK: 100 ppm, 490 mg/m3
Peak limitation category: I(2);
(DFG 2004).
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Routes of Exposure:
The substance can be absorbed into the body
by inhalation
and
by ingestion.
Inhalation Risk:
A harmful contamination of the air will be reached rather slowly on evaporation of this substance at 20°C.
Effects of Short-Term Exposure:
The substance
irritates
the eyes,
the skin
and
the respiratory tract.
The substance may cause effects on the
central nervous system
.
Effects of Long-Term or Repeated Exposure:
Repeated or prolonged contact with skin may cause dermatitis.
The liquid defats the skin.
The substance may have effects on the liver and kidneys
, resulting in
tissue lesions
.
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Physical
Properties
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Boiling point: 173°C
Melting point: -34°C
Relative density (water = 1): 0.897
Solubility in water:
none
Vapour pressure, kPa at 20°C: <0.1
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Relative vapour density (air = 1): 4.1
Relative density of the vapour/air-mixture at 20°C (air = 1): 1.00
Flash point: 52.8°C
Auto-ignition temperature: 515°C
Explosive limits, vol% in air: 1.1-5.3
Octanol/water partition coefficient as log Pow: 3.580
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Environmental
Data
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N O T E S
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Also consult ICSC 0514 Vinyl toluene isomer mixture.
Card has been partly updated in October 2005. See sections Occupational Exposure Limits, Emergency Response.
Transport Emergency Card: TEC (R)-30GF1-III-9
NFPA Code: H2; F2; R2;
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ADDITIONAL INFORMATION
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ICSC: 0735
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4-VINYL TOLUENE
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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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