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1,3-DICHLORO-2-BUTENEICSC: 1761
2-butene,1,3-dichloro-
1,3-dichlorobutylene
1,3-DCB
May 2010
CAS #: 926-57-8
UN #: 1993
EC Number: 213-138-3

  ACUTE HAZARDS PREVENTION FIRE FIGHTING
FIRE & EXPLOSION Flammable. Gives off irritating or toxic fumes (or gases) in a fire.  Above 27°C explosive vapour/air mixtures may be formed.  NO open flames, NO sparks and NO smoking.  Above 27°C use a closed system and ventilation.  Use fine water spray, carbon dioxide.  In case of fire: keep drums, etc., cool by spraying with water. 

 STRICT HYGIENE!  
  SYMPTOMS PREVENTION FIRST AID
Inhalation Cough. Sore throat.  Use ventilation, local exhaust or breathing protection.  Fresh air, rest. Refer for medical attention. 
Skin Redness. Pain. Skin burns.  Protective gloves. Protective clothing.  Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer immediately for medical attention. 
Eyes Redness. Pain.  Wear face shield or eye protection in combination with breathing protection.  Rinse with plenty of water (remove contact lenses if easily possible). Refer immediately for medical attention. 
Ingestion Cough. Burning sensation in the throat and chest.  Do not eat, drink, or smoke during work.  Rinse mouth. Do NOT induce vomiting. Give one or two glasses of water to drink. Refer immediately for medical attention. 

SPILLAGE DISPOSAL CLASSIFICATION & LABELLING
Personal protection: complete protective clothing including self-contained breathing apparatus. Do NOT let this chemical enter the environment. Collect leaking liquid in sealable containers. Absorb remaining liquid in sand or inert absorbent. Then store and dispose of according to local regulations. 

According to UN GHS Criteria

flam;flamecorrskull;toxic
DANGER
Flammable liquid and vapour
Toxic if swallowed or if inhaled
Causes severe skin burns and eye damage
Toxic to aquatic life 

Transportation
UN Classification
UN Hazard Class: 3; UN Pack Group: III 

STORAGE
Fireproof. Ventilation along the floor. Well closed. Separated from strong oxidants and food and feedstuffs. Store in an area without drain or sewer access. Provision to contain effluent from fire extinguishing. 
PACKAGING
 
1,3-DICHLORO-2-BUTENE ICSC: 1761
PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
COLOURLESS-TO-YELLOW LIQUID WITH CHARACTERISTIC ODOUR. 

Physical dangers
No data. 

Chemical dangers
Decomposes on heating. This produces hydrogen chloride. 

Formula: C4H6Cl2
Molecular mass: 125.0
Boiling point: 126°C
Melting point: -75°C
Relative density (water = 1): 1.2
Solubility in water: reaction
Vapour pressure, kPa at 25°C: 1.33
Relative vapour density (air = 1): 4.3
Relative density of the vapour/air-mixture at 20°C (air = 1): 1.07
Flash point: 27°C c.c.
Explosive limits, vol% in air: 2-13
Octanol/water partition coefficient as log Pow: 2.84  


EXPOSURE & HEALTH EFFECTS

Routes of exposure
The substance can be absorbed into the body in hazardous amounts by inhalation of its vapour, through the skin and by ingestion. Serious local effects by all routes of exposure. 

Effects of short-term exposure
The vapour is irritating to the respiratory tract and eyes. The substance is severely irritating to the eyes. The substance is corrosive to the skin. 

Inhalation risk
A harmful contamination of the air can be reached very quickly on evaporation of this substance at 20°C. 

Effects of long-term or repeated exposure
Repeated or prolonged inhalation of high concentrations may cause effects on the lungs. 


OCCUPATIONAL EXPOSURE LIMITS
 

ENVIRONMENT
The substance is toxic to aquatic organisms. It is strongly advised not to let the chemical enter into the environment. 

NOTES
See ICSC 0995. 

ADDITIONAL INFORMATION
  EC Classification
 

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    See Also:
       Toxicological Abbreviations