2,3-Benzofuran
Coumarone
C8H6O
Molecular mass: 118.1
ICSC # 0388
CAS # 271-89-6
RTECS # DF6423800
UN # 1993
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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.
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NO open flames, NO sparks, and NO smoking.
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Foam,
dry powder,
carbon dioxide.
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Explosion
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Above 56°C explosive vapour/air mixtures may be formed.
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Above 56°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.
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Exposure
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AVOID ALL CONTACT!
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•Inhalation
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See EFFECTS OF LONG-TERM OR REPEATED Exposure.
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•Skin
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•Eyes
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•Ingestion
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Spillage Disposal
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Storage
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Packaging & Labelling
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Remove all ignition sources.
Collect leaking liquid in covered containers.
Do NOT wash away into sewer.
Do NOT let this chemical enter the environment.
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Fireproof.
Well closed.
Cool.
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UN Hazard Class: 3
UN Subsidiary Risks: III
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Important Data
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Physical State; Appearance:
COLOURLESS
OILY
LIQUID
, WITH CHARACTERISTIC ODOUR.
Physical Dangers:
Chemical Dangers:
The substance will slowly polymerize at ambient temperatures, but more rapidly
under the influence of
heat
and
under the influence of acidic catalyst.
Occupational Exposure Limits:
TLV not established.
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Routes of Exposure:
The substance can be absorbed into the body
by inhalation of its aerosol.
Inhalation Risk:
No indication can be given about the rate in which a harmful concentration in the air is reached on evaporation of this substance at 20°C.
Effects of Short-Term Exposure:
Effects of Long-Term or Repeated Exposure:
The substance may have effects on the
kidneys
and
liver
.
This substance is possibly carcinogenic to humans.
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Physical
Properties
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Boiling point: 174°C
Melting point: <-18°C
Relative density (water = 1): 1.09
Solubility in water: none
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Vapour pressure, kPa at 25°C: 0.06
Relative density of the vapour/air-mixture at 20°C (air = 1): 1.00
Flash point: 56°C
Octanol/water partition coefficient as log Pow: 2.67
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Environmental
Data
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The substance is harmful to aquatic organisms.
It is strongly advised that this substance does not enter the environment.
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N O T E S
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Explosive limits are unknown in literature, although the substance is combustible and has a flash point < 61°C.
Do NOT take working clothes home.
Insufficient data are available on the effect of this substance on human health, therefore utmost care must be taken.
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ADDITIONAL INFORMATION
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ICSC: 0388
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BENZOFURAN
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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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