1,2-Dihydro-1,5-dimethyl-2-phenyl-3H-pyrazol-3-one
2,3-Dimethyl-1-phenyl-3-pyrazolin-3-one
Phenazone
C11H12N2O
Molecular mass: 188.2
ICSC # 0376
CAS # 60-80-0
RTECS # CD2450000
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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.
Gives off irritating or toxic fumes (or gases) in a fire.
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NO open flames.
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Powder, water spray, foam, carbon dioxide.
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Explosion
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Exposure
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PREVENT DISPERSION OF DUST!
STRICT HYGIENE!
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•Inhalation
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Blue lips or finger nails.
Blue skin.
Shortness of breath.
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Ventilation, local exhaust, or breathing protection.
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Fresh air, rest.
Refer for medical attention.
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•Skin
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Protective gloves.
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•Eyes
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Pain.
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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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Blue lips or fingernails.
Blue skin.
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Do not eat, drink, or smoke during work.
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Rinse mouth.
Give a slurry of activated charcoal in water to drink.
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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Sweep spilled substance into containers; if appropriate, moisten first to prevent dusting.
Carefully collect remainder,
then remove to safe place.
Personal protection: P2 filter respirator for harmful particles.
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Separated from
strong oxidants.
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Important Data
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Physical State; Appearance:
COLOURLESS
CRYSTALS
OR WHITE POWDER.
Physical Dangers:
Chemical Dangers:
The substance decomposes
on heating
producing
toxic and corrosive fumes
of
nitrogen oxides
.
Reacts with oxidants.
Occupational Exposure Limits:
TLV not established.
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Routes of Exposure:
The substance can be absorbed into the body
by inhalation of the dust and
by ingestion.
Inhalation Risk:
Evaporation at 20°C is negligible; a harmful concentration of airborne particles can, however, be reached quickly when dispersed, especially if powdered.
Effects of Short-Term Exposure:
The substance
irritates
the eyes
and
the respiratory tract
.
The substance may cause effects on the
blood
, resulting in
formation of methaemoglobin.
Effects of Long-Term or Repeated Exposure:
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Physical
Properties
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Boiling point: 319°C
Melting point: 113°C
Relative density (water = 1): 1.19
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Solubility in water:
very good
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Environmental
Data
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N O T E S
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ADDITIONAL INFORMATION
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ICSC: 0376
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ANTIPYRINE
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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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