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1,3-DICHLOROBENZENEICSC: 1095
April 2000
CAS #: 541-73-1m-Dichlorobenzene
m-Phenylene dichloride
UN #: 2810
EINECS #: 208-792-1

  ACUTE HAZARDS PREVENTION FIRE FIGHTING
FIRE & EXPLOSION Combustible. Gives off irritating or toxic fumes (or gases) in a fire.  Above 63°C explosive vapour/air mixtures may be formed.  NO open flames.  Above 63°C use a closed system and ventilation.  Use water spray, powder, foam, carbon dioxide.  In case of fire: keep drums, etc., cool by spraying with water. 

 PREVENT GENERATION OF MISTS!  
  SYMPTOMS ACUTE HAZARDS FIRST AID
Inhalation Cough. Drowsiness. Nausea. Sore throat. Vomiting. See Notes.  Use ventilation, local exhaust or breathing protection.  Fresh air, rest. Refer for medical attention. 
Skin Redness. Pain.  Protective gloves.  Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer for medical attention . 
Eyes Redness. Pain.  Wear safety goggles.  First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention. 
Ingestion Burning sensation. Diarrhoea. Nausea. Vomiting.  Do not eat, drink, or smoke during work. Wash hands before eating.  Rinse mouth. Refer for medical attention . 

SPILLAGE DISPOSAL CLASSIFICATION & LABELLING
Personal protection: filter respirator for organic gases and particulates adapted to the airborne concentration of the substance. Collect leaking and spilled liquid in sealable containers as far as possible. Absorb remaining liquid in sand or inert absorbent. Then store and dispose of according to local regulations. Do NOT let this chemical enter the environment. 

According to UN GHS Criteria

 

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

STORAGE
Provision to contain effluent from fire extinguishing. Separated from strong oxidants, aluminium and food and feedstuffs. Well closed. Store in an area without drain or sewer access. 
PACKAGING
Do not transport with food and feedstuffs. 
1,3-DICHLOROBENZENE ICSC: 1095
PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
COLOURLESS LIQUID. 

Physical dangers
The vapour is heavier than air. 

Chemical dangers
Decomposes on burning. This produces toxic fumes including hydrogen chloride. Reacts with strong oxidants. Reacts violently with aluminium. 

Formula: C6H4Cl2
Molecular mass: 147.00
Boiling point: 173°C
Melting point: -24.8°C
Relative density (water = 1): 1.288
Solubility in water: none
Vapour pressure, kPa at 25°C: 0.286
Relative vapour density (air = 1): 5.1
Flash point: 63°C
Octanol/water partition coefficient as log Pow: 3.53  


EXPOSURE & HEALTH EFFECTS

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

Effects of short-term exposure
The vapour is irritating to the eyes, skin and respiratory tract. See Notes. 

Inhalation risk
No indication can be given about the rate at which a harmful concentration of this substance in the air is reached on evaporation at 20°C. 

Effects of long-term or repeated exposure
The substance may have effects on the kidneys and liver. See Notes. 


Occupational exposure limits
MAK: 12 mg/m3, 2 ppm; peak limitation category: II(2); pregnancy risk group: C 

ENVIRONMENT
The substance is toxic to aquatic organisms. Bioaccumulation of this chemical may occur in fish. 

NOTES
Data on the toxicity of m-dichlorobenzene are limited.
Also consult ICSC #0037 (p-Dichlorobenzene) and #1066 (o-Dichlorobenzene). 

ADDITIONAL INFORMATION
  EC Classification
Symbol: Xn, N; R: 22-51/53; S: (2)-61 

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       Toxicological Abbreviations