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2,3,4-TRICHLOROPHENOLICSC: 0588
May 2010
CAS #: 15950-66-0Phenol, 2,3,4-trichloro-
1-Hydroxy-2,3,4-trichlorobenzene
UN #: 2020
EINECS #: 240-083-2

  ACUTE HAZARDS PREVENTION FIRE FIGHTING
FIRE & EXPLOSION Combustible. Gives off irritating or toxic fumes (or gases) in a fire.  Above 62°C explosive vapour/air mixtures may be formed.  NO open flames.  Above 62°C use a closed system and ventilation.  Use foam, dry powder, carbon dioxide.   

See Notes. PREVENT DISPERSION OF DUST!  
  SYMPTOMS ACUTE HAZARDS FIRST AID
Inhalation   Use local exhaust or breathing protection.  Fresh air, rest. Refer for medical attention. 
Skin   Protective gloves.  Remove contaminated clothes. Rinse and then wash skin with water and soap. 
Eyes   Wear safety goggles or eye protection in combination with breathing protection if powder.  Rinse with plenty of water (remove contact lenses if easily possible). 
Ingestion   Do not eat, drink, or smoke during work.  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. Do NOT let this chemical enter the environment. 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

Toxic to aquatic life 

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

STORAGE
Store in an area without drain or sewer access. Provision to contain effluent from fire extinguishing. Separated from strong oxidants and food and feedstuffs. 
PACKAGING
Do not transport with food and feedstuffs. 
2,3,4-TRICHLOROPHENOL ICSC: 0588
PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
WHITE POWDER OR NEEDLES WITH CHARACTERISTIC ODOUR. 

Physical dangers
No data. 

Chemical dangers
Decomposes on heating and on burning. This produces toxic fumes. Reacts with oxidants, acid anhydrides and acid chlorides. 

Formula: C6H3Cl3O
Molecular mass: 197.5
Sublimation
Melting point: 79-81°C
Density: 1.5 g/cm³
Solubility in water: none
Relative vapour density (air = 1): 6.8
Flash point: 62°C
Octanol/water partition coefficient as log Pow: 3.6  


EXPOSURE & HEALTH EFFECTS

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

Effects of short-term exposure
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
See Notes. 


Occupational exposure limits
 

ENVIRONMENT
The substance is very toxic to aquatic organisms. The substance may cause long-term effects in the aquatic environment. This substance does enter the environment under normal use. Great care, however, should be taken to avoid any additional release, for example through inappropriate disposal. 

NOTES
Insufficient data are available on the effect of this substance on human health, therefore utmost care must be taken.
No data are available on this isomer but a mixture of trichlorophenols may cause irritation of the skin, eyes and respiratory tract.
These substances may cause acute metabolic effects resulting in damage in several organs notably CNS.
Some technical products may contain highly toxic impurities including polychlorinated dibenzo-p-dioxins and furans.
Depending on the degree of exposure, periodic medical examination is suggested. 

ADDITIONAL INFORMATION
  EC Classification
 

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    See Also:
       Toxicological Abbreviations