1,2-Benzopyrone
2H-1-Benzopyran-2-one
C9H6O2
Molecular mass: 146.14
ICSC # 1105
CAS # 91-64-5
RTECS # GN4200000
UN # 2811
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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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Combustible.
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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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Exposure
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PREVENT DISPERSION OF DUST!
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•Inhalation
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Ventilation.
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Fresh air, rest.
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•Skin
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MAY BE ABSORBED!
Redness.
Pain.
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Protective gloves.
Protective clothing.
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Remove contaminated clothes.
Rinse and then wash skin with water and soap.
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•Eyes
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Face shield.
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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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Do not eat, drink, or smoke during work.
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Rinse mouth.
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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Carefully collect remainder,
then remove to safe place.
(Extra personal protection: P2 filter respirator for harmful particles).
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Separated from
food and feedstuffs.
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Do not transport with food and feedstuffs.
UN Hazard Class: 6.1
UN Packing Group: I,II,III
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Important Data
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Physical State; Appearance:
COLOURLESS FLAKES
, WITH CHARACTERISTIC ODOUR.
Physical Dangers:
Chemical Dangers:
Occupational Exposure Limits:
TLV not established.
MAK not established.
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Routes of Exposure:
The substance can be absorbed into the body
by inhalation of its aerosol,
through the skin and
by ingestion.
Inhalation Risk:
Evaporation at 20°C is negligible; a nuisance-causing concentration of airborne particles can, however, be reached quickly.
Effects of Short-Term Exposure:
The substance
irritates
the skin
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Effects of Long-Term or Repeated Exposure:
This substance is possibly carcinogenic to humans.
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Physical
Properties
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Boiling point: 297-299°C
Melting point: 68-70°C
Density: 0.94
g/cm3
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Solubility in water: poor
Vapour pressure, kPa at 106°C: 0.13
Flash point: 150°C
Octanol/water partition coefficient as log Pow: 1.39
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Environmental
Data
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N O T E S
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Transport Emergency Card: TEC (R)-61G12c
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ADDITIONAL INFORMATION
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ICSC: 1105
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COUMARIN
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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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