International Chemical Safety Cards

1,4-DICHLOROBENZENE

ICSC: 0037

para-Dichlorobenzene
PDCB
C₆H₄Cl₂
Molecular mass: 147

ICSC #    0037
CAS #     106-46-7
RTECS # CZ4550000
UN #        2811
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. NO contact with strong oxidants.	Powder, water spray, foam, carbon dioxide.
EXPLOSION	Above 66°C explosive vapour/air mixtures may be formed.	Above 66°C use a closed system, ventilation, and explosion-proof electrical equipment.	In case of fire: keep drums, etc., cool by spraying with water.

EXPOSURE		PREVENT DISPERSION OF DUST! STRICT HYGIENE!
•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	Redness.	Protective gloves.	Remove contaminated clothes. Rinse and then wash skin with water and soap. Refer for medical attention.
•EYES	Pain.	Face shield.	First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
•INGESTION	Burning sensation. Convulsions. Diarrhoea. (Further see Inhalation).	Do not eat, drink, or smoke during work. Wash hands before eating.	Give plenty of water to drink. Refer for medical attention.

SPILLAGE DISPOSAL

STORAGE

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: P2 filter respirator for harmful particles).

Provision to contain effluent from fire extinguishing. Separated from strong oxidants, acids, food and feedstuffs. Keep in a well-ventilated room.

Do not transport with food and feedstuffs.
Marine pollutant.
Xn symbol
R: 36/38
S: 2-22-24/25-46
UN Hazard Class: 6.1
UN Packing Group: III

SEE IMPORTANT INFORMATION ON BACK

ICSC: 0037

Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities (C) IPCS CEC 2002. No modifications to the International version have been made except to add the OSHA PELs, NIOSH RELs and NIOSH IDLH values.

International Chemical Safety Cards

1,4-DICHLOROBENZENE

ICSC: 0037

I

M

P

O

R

T

A

N

T

D

A

T

A

PHYSICAL STATE; APPEARANCE:
COLOURLESS TO WHITE CRYSTALS WITH A STRONG ODOUR.

PHYSICAL DANGERS:
The vapour is heavier than air.

CHEMICAL DANGERS:
On combustion, forms toxic and corrosive fumes including phosgene, hydrogen chloride. The substance decomposes on contact with acids or acid fumes producing highly toxic fumes. Reacts with strong oxidants.

OCCUPATIONAL EXPOSURE LIMITS:
TLV: 10 ppm; 60 mg/m³ (as TWA) (ACGIH 1991-1992).
MAK: 50 ppm; 300 mg/m³; Pregnancy: C (1993).
OSHA PEL: TWA 75 ppm (450 mg/m³)
NIOSH REL: Ca See Appendix A
NIOSH IDLH: Potential occupational carcinogen 150 ppm

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 vapour irritates the eyes, the skin and the respiratory tract. The substance may cause effects on the blood and central nervous system , resulting in impaired functions and haemolytic anemia. 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: 174°C
Melting point: 53°C
Relative density (water = 1): 1.2
Solubility in water: none
Vapour pressure, Pa at 20°C: 170

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.
Octanol/water partition coefficient as log Pow: 3.37

ENVIRONMENTAL
DATA

The substance is toxic to aquatic organisms.

N O T E S

Depending on the degree of exposure, periodic medical examination is indicated. Dichloricide, Paracid, Parazene, Paramoth, Paradow, and Santochlor are trade names.

Transport Emergency Card: TEC (R)-61G12c
NFPA Code: H 2; F 2; R 0;

ADDITIONAL INFORMATION

ICSC: 0037	1,4-DICHLOROBENZENE
(C) IPCS, CEC, 2002

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.