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1,4-DICHLOROBENZENE ICSC: 0037
Date of Peer Review: November 2003

p-Dichlorobenzene
PDCB
CAS # 106-46-7 C6H4Cl2
RTECS # CZ4550000 Molecular mass: 147
UN # 3077
EC # 602-035-00-2
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.
Powder, water spray, foam, carbon dioxide.
EXPLOSION Above 66C explosive vapour/air mixtures may be formed.
Above 66C use a closed system, ventilation, and explosion-proof electrical equipment.
In case of fire: keep drums, etc., cool by spraying with water.
EXPOSURE
AVOID ALL CONTACT!

Inhalation Burning sensation. Cough. Drowsiness. Headache. Nausea. Shortness of breath. Vomiting.
Ventilation, 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 Redness. Pain.
Safety goggles, or eye protection in combination with breathing protection.
First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
Ingestion Diarrhoea. (Further see Inhalation).
Do not eat, drink, or smoke during work.
Give plenty of water to drink. Refer for medical attention.
SPILLAGE DISPOSAL PACKAGING & LABELLING
Sweep spilled substance into containers; if appropriate, moisten first to prevent dusting. Carefully collect remainder, then remove to safe place. (Extra personal protection: filter respirator for organic gases and vapours.) Do NOT let this chemical enter the environment.
Do not transport with food and feedstuffs. Marine pollutant.
EU Classification
Symbol: Xi, N
R: 36-50/53
S: (2-)-22-24/25-46-60-61
UN Classification
UN Hazard Class: 9
UN Pack Group: III
EMERGENCY RESPONSE STORAGE
Transport Emergency Card: TEC (R)-90GM7-III
NFPA Code: H 2; F 2; R 0;
Provision to contain effluent from fire extinguishing. Separated from strong oxidants, food and feedstuffs. Keep in a well-ventilated room.
IPCS
International
Programme on
Chemical Safety
Prepared in the context of cooperation between the International Programme on Chemical Safety and the Commission of the European Communities IPCS, CEC 1999

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1,4-DICHLOROBENZENE ICSC: 0037
IMPORTANT DATA
PHYSICAL STATE; APPEARANCE:
COLOURLESS TO WHITE CRYSTALS, WITH CHARACTERISTIC ODOUR.

CHEMICAL DANGERS:
On combustion, forms toxic and corrosive fumes including hydrogen chloride. Reacts with strong oxidants.

OCCUPATIONAL EXPOSURE LIMITS:
TLV: 10 ppm as TWA; A3; (ACGIH 2003).
MAK: H; Carcinogen category: 2 Germ cell mutagen group: 3B (DFG 2003).
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 20C.

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.
PHYSICAL PROPERTIES
Boiling point: 174C
Melting point: 53C
Density: 1.2 g/cm
Solubility in water: at 25 C80 mg/l
Vapour pressure, Pa at 20C: 170
Relative vapour density (air = 1): 5.08
Relative density of the vapour/air-mixture at 20C (air = 1): 1.01
Flash point: 66C c.c.
Explosive limits, vol% in air: 6.2-16%
Octanol/water partition coefficient as log Pow: 3.37
ENVIRONMENTAL DATA
The substance is toxic to aquatic organisms. Bioaccumulation of this chemical may occur in fish.
NOTES
Depending on the degree of exposure, periodic medical examination is suggested. Do NOT take working clothes home.
ADDITIONAL INFORMATION


LEGAL NOTICE Neither the CEC nor the IPCS nor any person acting on behalf of the CEC or the IPCS is responsible for the use which might be made of this information
IPCS, CEC 1999
See Also:
        1,2-Dichlorobenzene (ICSC)
        1,4-Dichlorobenzene (CHEMINFO)