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TETRADIFONICSC: 0747
4-Chlorophenyl 2,4,5-trichlorophenyl sulfone
1,2,4-Trichloro-5-((4-chlorophenyl)sulfonyl)-benzene
2,4,4',5-Tetrachlorodiphenyl sulfone
August 1997
CAS #: 116-29-0
EC Number: 204-134-2

  ACUTE HAZARDS PREVENTION FIRE FIGHTING
FIRE & EXPLOSION Liquid formulations containing organic solvents may be flammable. Gives off irritating or toxic fumes (or gases) in a fire.  Risk of fire and explosion if formulations contain flammable/explosive solvents.      Use alcohol-resistant foam, powder, carbon dioxide.   

 PREVENT DISPERSION OF DUST!  
  SYMPTOMS PREVENTION FIRST AID
Inhalation   Use ventilation.   
Skin   Protective gloves.  Rinse skin with plenty of water or shower. 
Eyes Redness.  Wear safety spectacles.  First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention. 
Ingestion   Do not eat, drink, or smoke during work. Wash hands before eating.  Refer for medical attention . 

SPILLAGE DISPOSAL CLASSIFICATION & LABELLING
Do NOT wash away into sewer. Sweep spilled substance into covered containers. If appropriate, moisten first to prevent dusting. Carefully collect remainder. Then store and dispose of according to local regulations. 

According to UN GHS Criteria

 

Transportation
UN Classification
 

STORAGE
Provision to contain effluent from fire extinguishing. Separated from food and feedstuffs. 
PACKAGING
Do not transport with food and feedstuffs. 
TETRADIFON ICSC: 0747
PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
COLOURLESS CRYSTALS. 

Physical dangers
 

Chemical dangers
Decomposes on heating and on burning. This produces toxic fumes including sulfur oxides and hydrogen chloride. 

Formula: C12H6Cl4O2S / (C6H2Cl3)OSO(C6H4Cl)
Molecular mass: 356
Melting point: 148-149°C
Relative density (water = 1): 1.5
Solubility in water at 20°C: none
Vapour pressure, Pa at 20°C: <0.001
Octanol/water partition coefficient as log Pow: 4.6  


EXPOSURE & HEALTH EFFECTS

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

Effects of short-term exposure
 

Inhalation risk
Evaporation at 20°C is negligible; a harmful concentration of airborne particles can, however, be reached quickly when dispersed, especially if powdered. 

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


OCCUPATIONAL EXPOSURE LIMITS
 

ENVIRONMENT
The substance is very toxic to aquatic organisms. Avoid release to the environment in circumstances different to normal use. 

NOTES
If the substance is formulated with solvent(s) also consult the card(s) (ICSC) of the solvent(s).
Carrier solvents used in commercial formulations may change physical and toxicological properties. 

ADDITIONAL INFORMATION
  EC Classification
 

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    See Also:
       Toxicological Abbreviations
       Tetradifon (EHC 67, 1986)
       Tetradifon (HSG 11, 1987)