1-Hydroxy-3,5-dichlorobenzene
C6H4Cl2O
Molecular mass: 163
ICSC # 0440
CAS # 591-35-5
RTECS # SK8820000
UN # 2020
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Types of Hazard/ Exposure
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Acute Hazards/ Symptoms
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Prevention
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First Aid/
Fire Fighting
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FIRE
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Combustible.
Gives off irritating or toxic fumes (or gases) in a fire.
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NO open flames.
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Foam,
carbon dioxide,
water spray, powder.
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Explosion
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Exposure
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STRICT HYGIENE!
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•Inhalation
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Burning sensation.
Cough.
Sore throat.
Further
see Ingestion.
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Local exhaust or breathing protection.
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Fresh air, rest.
Refer for medical attention.
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•Skin
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MAY BE ABSORBED!
Redness.
Pain.
Blisters.
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Protective gloves.
Protective clothing.
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Remove contaminated clothes.
Rinse and then wash skin with water and soap.
Refer for medical attention.
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•Eyes
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Redness.
Pain.
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Face shield
or
eye protection in combination with breathing protection.
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First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
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•Ingestion
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Abdominal pain.
Burning sensation.
Diarrhoea.
Dizziness.
Headache.
Laboured breathing.
Nausea.
Vomiting.
Weakness.
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Do not eat, drink, or smoke during work.
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Rinse mouth.
Rest.
Refer for medical attention.
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Spillage Disposal
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Storage
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Packaging & Labelling
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Sweep spilled substance into containers; if appropriate, moisten first to prevent dusting.
Carefully collect remainder,
then remove to safe place.
Do NOT let this chemical enter the environment.
Chemical protection suit including self-contained breathing apparatus.
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Provision to contain effluent from fire extinguishing.
Separated from
oxidants
,
food and feedstuffs
.
Ventilation along the floor.
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Do not transport with food and feedstuffs.
Marine pollutant.
UN Hazard Class: 6.1
UN Packing Group: III
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Important Data
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Physical State; Appearance:
COLOURLESS
CRYSTALS
, WITH CHARACTERISTIC ODOUR.
Physical Dangers:
Chemical Dangers:
The substance decomposes
on burning
producing toxic and corrosive fumes including acid chlorides and acid anhydrides.
Reacts with oxidants.
Occupational Exposure Limits:
TLV not established.
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Routes of Exposure:
The substance can be absorbed into the body
by inhalation
and
through the skin.
Inhalation Risk:
A harmful contamination of the air will not or will only very slowly be reached on evaporation of this substance at 20°C
; on spraying or dispersing, however, much faster.
Effects of Short-Term Exposure:
The substance
is severely irritating to
the eyes
,
the skin
and
the respiratory tract.
Exposure may result in chloracne.
Effects of Long-Term or Repeated Exposure:
See Notes.
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Physical
Properties
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Boiling point at 100.9 kPa: 233°C
Melting point: 68°C
Solubility in water:
poor
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Vapour pressure, Pa at 25°C: about 1
Relative vapour density (air = 1): 5.6
Relative density of the vapour/air-mixture at 20°C (air = 1): 1
Octanol/water partition coefficient as log Pow: 3.62-3.68
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Environmental
Data
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The substance is toxic to aquatic organisms.
This substance may be hazardous to the environment; special attention should be given to water quality, soil contamination.
Bioaccumulation of this chemical may occur aquatic organisms.
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N O T E S
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Insufficient data are available on the effect of this substance on human health, therefore utmost care must be taken.
Also consult ICSC 0438 2,4-dichlorophenol and 0439 2,5-dichlorophenol.
Card has been partly updated in October 2005. See section Emergency Response.
Transport Emergency Card: TEC (R)-61S2020 or 61GT2-III
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ADDITIONAL INFORMATION
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ICSC: 0440
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3,5-DICHLOROPHENOL
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(C) IPCS, CEC, 1994
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IMPORTANT LEGAL NOTICE:
Neither NIOSH, the CEC or the IPCS nor any person acting on behalf of NIOSH,
the CEC or the IPCS is responsible for the use which might be made of this
information. This card contains the collective views of the IPCS Peer Review Committee and may
not reflect in all cases all the detailed requirements included in national legislation
on the subject. The user should verify compliance of the cards with the relevant legislation
in the country of use.
The only modifications made to produce the U.S. version is inclusion of the OSHA PELs, NIOSH RELs and NIOSH IDLH values.
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