4,5,6,7-Tetrachloro-1,3-isobenzofurandione
1,3-Dioxy-4,5,6,7-tetrachloroisobenzofuran
C8Cl4O3 / C6Cl4(CO)2O
Molecular mass: 285.9
ICSC # 1374
CAS # 117-08-8
RTECS # TI3450000
EC # 607-242-00-1
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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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Water spray, powder.
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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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Cough.
Sore throat.
Wheezing.
Shortness of breath.
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Local exhaust or breathing protection.
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Fresh air, rest.
Half-upright position.
Refer for medical attention.
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•Skin
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Redness.
Burning sensation.
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Protective gloves.
Protective clothing.
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Remove contaminated clothes.
Rinse skin with plenty of water or shower.
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•Eyes
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Redness.
Pain.
Blurred vision.
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Safety goggles,
or eye protection in combination with breathing protection.
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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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Burning sensation.
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Do not eat, drink, or smoke during work.
Wash hands before eating.
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Rinse mouth.
Do NOT induce vomiting.
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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.
Do NOT let this chemical enter the environment.
(Extra personal protection: P2 filter respirator for harmful particles.)
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Dry.
Well closed.
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Xn symbol
N symbol
R: 41-42/43-50/53
S: 2-22-24-26-37/39-60-61
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Important Data
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Physical State; Appearance:
WHITE
POWDER
Physical Dangers:
Chemical Dangers:
Reacts
slowly
with
water
to produce
acid.
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:
Evaporation at 20°C is negligible; a harmful concentration of airborne particles can, however, be reached quickly when dispersed.
Effects of Short-Term Exposure:
The substance
is irritating to
the eyes
,
the skin
and
the respiratory tract.
Effects of Long-Term or Repeated Exposure:
Repeated or prolonged contact may cause skin sensitization.
Repeated or prolonged inhalation exposure may cause asthma.
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Physical
Properties
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Boiling point: 371°C
Melting point: 255°C
Solubility in water, g/100 ml at 20°C: 0.4
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Flash point:
362°C c.c.
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Environmental
Data
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N O T E S
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The symptoms of asthma often do not become manifest until a few hours have passed and they are aggravated by physical effort. Rest and medical observation are therefore essential.
Anyone who has shown symptoms of asthma due to this substance should avoid all further contact with this substance.
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ADDITIONAL INFORMATION
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ICSC: 1374
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TETRACHLOROPHTHALIC ANHYDRIDE
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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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