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3,5-DICHLOROPHENOL
ICSC: 0440
Peer-Review Status: 06.05.2010 Validated
1-Hydroxy-3,5-dichlorobenzene
3,5-Dichlorohydroxybenzene 
CAS #: 591-35-5 RTECS #: SK8820000
UN #: 2020
EINECS #: 209-714-9
    Formula: C6H4Cl2O
Molecular mass: 163

TYPES OF
HAZARD /
EXPOSURE
ACUTE HAZARDS / SYMPTOMS      PREVENTION      FIRST AID / FIRE FIGHTING
FIRE Combustible. Gives off irritating or toxic fumes (or gases) in a fire.  NO open flames.  Use water spray, foam, powder, carbon dioxide. 
EXPLOSION      
 
EXPOSURE   STRICT HYGIENE! PREVENT DISPERSION OF DUST!   
Inhalation Sore throat. Cough. Burning sensation.  Use local exhaust or breathing protection.  Fresh air, rest. Refer for medical attention. 
Skin Redness. 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 face shield or eye protection in combination with breathing protection.  Rinse with plenty of water (remove contact lenses if easily possible). Refer for medical attention. 
Ingestion Sore throat. Burning sensation.  Do not eat, drink, or smoke during work.  Rinse mouth. Rest. Refer for medical attention . 

SPILLAGE DISPOSAL
PACKAGING & LABELLING
Personal protection: chemical protection suit including self-contained breathing apparatus. 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
Signal: Warning
May be harmful if swallowed
Causes skin irritation
Causes serious eye irritation
Very toxic to aquatic life 
excl mark;warnenviro;aqua

EMERGENCY RESPONSE SAFE STORAGE
  Store only in original container. Store in an area without drain or sewer access. Provision to contain effluent from fire extinguishing. Separated from oxidants and food and feedstuffs. Ventilation along the floor. 

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

Physical dangers
No data. 

Chemical dangers
Decomposes on heating. This produces toxic and corrosive fumes including acid anhydrides and hydrogen chloride. Decomposes on burning. This produces toxic fumes including phosgene. Reacts with strong oxidants. 

Occupational exposure limits
TLV (NOT-ESTABLISHED):.
MAK (not established):. 

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

Inhalation risk
A harmful concentration of airborne particles can be reached quickly when dispersed, especially if powdered. 

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

Effects of long-term or repeated exposure
See Notes. 


PHYSICAL PROPERTIES ENVIRONMENTAL DATA
Boiling point at 100.9kPa: 233°C
Melting point: 68°C
Solubility in water, g/100ml at 25°C: 0.54 (poor)
Vapour pressure, Pa at 25°C: 1
Relative vapour density (air = 1): 5.6
Relative density of the vapour/air-mixture at 20°C (air = 1): 1.0
Octanol/water partition coefficient as log Pow: 3.62-3.68  
The substance is toxic to aquatic organisms. 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.
The substance is combustible but no flash point is available in literature.
Also consult ICSC 0438 2,4-dichlorophenol and 0439 2,5-dichlorophenol 

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