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2,3,5,6-TETRACHLOROPHENOL
ICSC: 0573
Peer-Review Status: 04.09.1997 Validated
Phenol, 2,3,5,6-tetrachloro-
2,3,5,6-Tetrachlorohydroxybenzene 
CAS #: 935-95-5 RTECS #: SM9450000
UN #: 2020
EINECS #: 213-310-8
    Formula: C6H2Cl4O
Molecular mass: 231.9

TYPES OF
HAZARD /
EXPOSURE
ACUTE HAZARDS / SYMPTOMS      PREVENTION      FIRST AID / FIRE FIGHTING
FIRE Not combustible. Gives off irritating or toxic fumes (or gases) in a fire.    In case of fire in the surroundings, use appropriate extinguishing media. 
EXPLOSION      
 
EXPOSURE   PREVENT DISPERSION OF DUST!   
Inhalation Cough. Sore throat. See Notes.  Use local exhaust or breathing protection.  Fresh air, rest. Refer for medical attention. 
Skin Dry skin. Redness. Burning sensation. Pain.  Protective gloves. Protective clothing.  Remove contaminated clothes. Rinse and then wash skin with water and soap. Refer for medical attention . 
Eyes Redness. Pain.  Wear safety goggles or eye protection in combination with breathing protection if powder.  First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention. 
Ingestion Abdominal pain. Diarrhoea. Headache. Dizziness. Vomiting. Weakness. Convulsions. Muscle spasms. Fever. Sweating. See Notes.  Do not eat, drink, or smoke during work.  Rinse mouth. Give a slurry of activated charcoal in water to drink. Refer for medical attention . 

SPILLAGE DISPOSAL
PACKAGING & LABELLING
Personal protection: particulate filter respirator 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.  Do not transport with food and feedstuffs.
Marine pollutant. 
EC Classification
 
UN Classification
UN Hazard Class: 6.1; UN Pack Group: III 
GHS Classification
 

EMERGENCY RESPONSE SAFE STORAGE
Transport Emergency Card: TEC (R)-804.
NFPA Code: H3; F0; R0. 
Provision to contain effluent from fire extinguishing. Separated from strong oxidants and food and feedstuffs. 

IMPORTANT DATA
Physical State; Appearance
BROWN CRYSTALS WITH CHARACTERISTIC ODOUR. 

Physical dangers
 

Chemical dangers
Decomposes on heating and on contact with strong oxidants. This produces toxic and corrosive fumes of of hydrogen chloride. The substance is a weak acid. 

Occupational exposure limits
TLV (NOT-ESTABLISHED):. 

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

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

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

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


PHYSICAL PROPERTIES ENVIRONMENTAL DATA
Decomposes at 288°C
Melting point: 115°C
Relative density (water = 1): 1.6 (60°C)
Solubility in water: poor
Vapour pressure, Pa at 100°C: 130
Relative vapour density (air = 1): 8.0
Octanol/water partition coefficient as log Pow: 3.9  
The substance is very toxic to aquatic organisms. The substance may cause long-term effects in the aquatic environment. 

NOTES
No data are available on this isomer but a mixture of tetrachlorophenols 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 indicated. 

ADDITIONAL INFORMATION
 

IPCS
International
Programme on
Chemical Safety
WHO ILO EC Prepared in the context of cooperation between the International Programme on Chemical Safety and the European Commission
© IPCS 2004-2012
LEGAL NOTICE Neither the EC nor the IPCS nor any person acting on behalf of the EC or the IPCS is responsible for the use which might be made of this information.


    See Also:
       Toxicological Abbreviations