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o-CHLOROBENZYLIDENEMALONONITRILEICSC: 1065
[2-(Chlorophenyl)methylene]malononitrile
2-Chlorobenzylidene malononitrile
(o-Chlorobenzal)malononitrile
beta,beta-Dicyano-o-chlorostyrene
[(2-Chlorophenyl)methylene]propanedinitrile
CS (riot control agent)
September 2002
CAS #: 2698-41-1
UN #: 3276
EC Number: 220-278-9

  ACUTE HAZARDS PREVENTION FIRE FIGHTING
FIRE & EXPLOSION Combustible. Gives off irritating or toxic fumes (or gases) in a fire.  Finely dispersed particles form explosive mixtures in air.  NO open flames.  Closed system, dust explosion-proof electrical equipment and lighting. Prevent deposition of dust.  Use powder, carbon dioxide.   

 PREVENT DISPERSION OF DUST!  
  SYMPTOMS PREVENTION FIRST AID
Inhalation Cough. Dizziness. Headache. Laboured breathing. Nausea. Sore throat. Vomiting.  Use local exhaust.  Fresh air, rest. 
Skin Redness. Burning sensation. Pain. Blisters.  Protective gloves. Protective clothing.  Remove contaminated clothes. Rinse and then wash skin with water and soap. 
Eyes Watering of the eyes. Redness. Pain.  Wear safety goggles or face shield.  First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention. 
Ingestion Burning sensation in the throat and chest.  Do not eat, drink, or smoke during work.  Give one or two glasses of water to drink. Refer for medical attention . 

SPILLAGE DISPOSAL CLASSIFICATION & LABELLING
Vacuum spilled material with specialist equipment. Personal protection: particulate filter respirator adapted to the airborne concentration of the substance. 

According to UN GHS Criteria

 

Transportation
UN Classification
UN Hazard Class: 6.1; UN Pack Group: III 

STORAGE
Separated from food and feedstuffs. Keep in a well-ventilated room. 
PACKAGING
Do not transport with food and feedstuffs. 
o-CHLOROBENZYLIDENEMALONONITRILE ICSC: 1065
PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
WHITE CRYSTALLINE POWDER WITH CHARACTERISTIC ODOUR. 

Physical dangers
 

Chemical dangers
Reacts with strong bases and strong acids. This produces ammonia. Decomposes on burning. This produces toxic fumes including hydrogen chloride, hydrogen cyanide and nitrogen oxides. Reacts violently with strong oxidants. This generates fire and explosion hazard. 

Formula: C10H5ClN2 / ClC6H4CH=C(CN)2
Molecular mass: 188.6
Boiling point: 310-315°C
Melting point: 93-96°C
Solubility in water, g/100ml at 20°C: 0.1-0.5
Vapour pressure, Pa at ?°C: 0.0045
Relative vapour density (air = 1): 6.5  


EXPOSURE & HEALTH EFFECTS

Routes of exposure
The substance can be absorbed into the body by inhalation, through the skin and by ingestion. 

Effects of short-term exposure
Lachrymation. The substance is severely irritating to the eyes, skin and respiratory tract. The substance may cause effects on the lungs. 

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 long-term or repeated exposure
Repeated or prolonged contact with skin may cause dermatitis. Repeated or prolonged contact may cause skin sensitization. 


OCCUPATIONAL EXPOSURE LIMITS
TLV: 0.05 ppm as STEL; (skin); A4 (not classifiable as a human carcinogen) 

ENVIRONMENT
The substance is very toxic to aquatic organisms. 

NOTES
The occupational exposure limit value should not be exceeded during any part of the working exposure. 

ADDITIONAL INFORMATION
  EC Classification
 

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    See Also:
       Toxicological Abbreviations