p-Dichlorobenzene
PDCB
C6H4Cl2
Molecular mass: 147
ICSC # 0037
CAS # 106-46-7
RTECS # CZ4550000
UN # 3077
EC # 602-035-00-2
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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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Powder, water spray, foam, carbon dioxide.
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Explosion
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Above 66°C explosive vapour/air mixtures may be formed.
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Above 66°C use a closed system, ventilation, and explosion-proof electrical equipment.
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In case of fire: keep drums, etc., cool by spraying with water.
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Exposure
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AVOID ALL CONTACT!
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•Inhalation
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Burning sensation.
Cough.
Drowsiness.
Headache.
Nausea.
Shortness of breath.
Vomiting.
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Ventilation, 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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Protective gloves.
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Remove contaminated clothes.
Rinse and then wash skin with water and soap.
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•Eyes
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Redness.
Pain.
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Safety goggles,
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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Diarrhoea.
(Further see Inhalation).
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Do not eat, drink, or smoke during work.
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Give plenty of water to drink.
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.
Personal protection:
filter respirator for organic gases and vapours.
Do NOT let this chemical enter the environment.
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Provision to contain effluent from fire extinguishing.
Separated from
strong oxidants,
food and feedstuffs
.
Keep in a well-ventilated room.
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Do not transport with food and feedstuffs.
Marine pollutant.
Xn symbol
N symbol
R: 36-40-50/53
S: 2-36/37-46-60-61
UN Hazard Class: 9
UN Packing Group: III
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Important Data
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Physical State; Appearance:
COLOURLESS
TO WHITE
CRYSTALS
, WITH CHARACTERISTIC ODOUR.
Physical Dangers:
Chemical Dangers:
On combustion, forms toxic and corrosive fumesincludinghydrogen chloride.
Reacts
with
strong oxidants
.
Occupational Exposure Limits:
TLV: 10 ppm as TWA; A3; (ACGIH 2004).
MAK: H;
Carcinogen category: 2; Germ cell mutagen group: 3B;
(DFG 2004).
OSHA PEL: TWA 75 ppm (450 mg/m3)
NIOSH REL: Ca See Appendix A
NIOSH IDLH: Ca 150 ppm See: 106467
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Routes of Exposure:
The substance can be absorbed into the body
by inhalation
and
by ingestion.
Inhalation Risk:
A harmful contamination of the air will be reached rather slowly on evaporation of this substance at 20°C.
Effects of Short-Term Exposure:
The substance
is irritating to
the eyes
and
the respiratory tract
.
The substance may cause effects on the
blood
, resulting in haemolytic anaemia.
The substance may cause effects on the
central nervous system.
Medical observation is indicated.
Effects of Long-Term or Repeated Exposure:
The substance may have effects on the liver, kidneys and blood.
This substance is possibly carcinogenic to humans.
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Physical
Properties
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Boiling point: 174°C
Melting point: 53°C
Density: 1.2
g/cm3
Solubility in water: at 25 °C 80 mg/l
Vapour pressure, Pa at 20°C: 170
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Relative vapour density (air = 1): 5.08
Relative density of the vapour/air-mixture at 20°C (air = 1): 1.01
Flash point: 66°C c.c.
Explosive limits, vol% in air: 6.2-16
Octanol/water partition coefficient as log Pow: 3.37
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Environmental
Data
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The substance is toxic to aquatic organisms.
Bioaccumulation of this chemical may occur in fish.
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N O T E S
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Depending on the degree of exposure, periodic medical examination is suggested.
Do NOT take working clothes home.
Card has been partly updated in October 2004. See sections Occupational Exposure Limits, EU classification, Emergency Response.
Transport Emergency Card: TEC (R)-90GM7-III
NFPA Code: H 2; F 2; R 0;
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ADDITIONAL INFORMATION
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ICSC: 0037
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1,4-DICHLOROBENZENE
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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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