2-(Chlorophenyl)methylenemalononitrile
2-Chlorobenzylidene malononitrile
(o-Chlorobenzal)malononitrile
beta,beta-Dicyano-o-chlorostyrene
(2-Chlorophenyl)methylenepropanedinitrile
CS (riot control agent)
C10H5ClN2 / ClC6H4CH=C(CN)2
Molecular mass: 188.6
ICSC # 1065
CAS # 2698-41-1
RTECS # OO3675000
UN # 3276
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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 or carbon dioxide.
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Explosion
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Finely dispersed particles form explosive mixtures in air.
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Prevent deposition of dust; closed system, dust explosion-proof electrical equipment and lighting.
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Exposure
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PREVENT DISPERSION OF DUST!
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•Inhalation
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Cough.
Dizziness.
Headache.
Laboured breathing.
Nausea.
Sore throat.
Vomiting.
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Local exhaust.
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Fresh air, rest.
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•Skin
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Redness.
Burning sensation.
Pain.
Blisters.
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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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Causes watering of the eyes.
Redness.
Pain.
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Safety goggles,
or
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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Burning sensation in the throat and chest.
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Do not eat, drink, or smoke during work.
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Give plenty of 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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Vacuum spilled material.
(Extra personal protection: P3 filter respirator for toxic particles.)
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Separated from food and feedstuffs
.
Keep in a well-ventilated room.
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Do not transport with food and feedstuffs.
UN Hazard Class: 6.1
UN Packing Group: III
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Important Data
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Physical State; Appearance:
WHITE
CRYSTALLINE POWDER
, WITH CHARACTERISTIC ODOUR.
Physical Dangers:
Chemical Dangers:
Reacts
with
strong bases
or
acids
producing
ammonia
.
The substance decomposes
on burning
producing
toxic fumes
including
hydrogen chloride
,
hydrogen cyanide
and
nitrogen oxides
.
Reacts
violently with
strong oxidants
causing fire and explosion hazard.
Occupational Exposure Limits:
TLV: 0.05 ppm (Ceiling value); (skin); A4; (ACGIH 2002).
OSHA PEL: TWA 0.05 ppm (0.4 mg/m3)
NIOSH REL: C 0.05 ppm (0.4 mg/m3) skin
NIOSH IDLH: 2 mg/m3 See: 2698411
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Routes of Exposure:
The substance can be absorbed into the body
by inhalation,
through the skin
and
by ingestion.
Inhalation Risk:
Evaporation at 20°C is negligible; a harmful concentration of airborne particles can, however, be reached quickly on spraying or when dispersed, especially if powdered.
Effects of Short-Term Exposure:
Causes watering of the eyes.
The substance
is severely irritating to
the eyes
,
the skin
and
the respiratory tract
The substance may cause effects on the
lungs
.
Effects of Long-Term or Repeated Exposure:
Repeated or prolonged contact with skin may cause dermatitis.
Repeated or prolonged contact may cause skin sensitization.
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Physical
Properties
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Boiling point: 310-315°C
Melting point: 93-96°C
Solubility in water, g/100 ml at 20°C: 0.1-0.5
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Vapour pressure, Pa at °C: 0.0045
Relative vapour density (air = 1): 6.5
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Environmental
Data
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The substance is very toxic to aquatic organisms.
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N O T E S
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The occupational exposure limit value should not be exceeded during any part of the working exposure.
Transport Emergency Card: TEC (R)-61GT1-III
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ADDITIONAL INFORMATION
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ICSC: 1065
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o-CHLOROBENZYLIDENEMALONONITRILE
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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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