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NIOSH

1,2,4,5-TETRACHLOROBENZENE

ICSC: 0676

Benzene tetrachloride
s-Tetrachlorobenzene
C6H2Cl4
Molecular mass: 215.9
ICSC # 0676 		CAS # 95-94-3
RTECS # DB9450000
November 26, 2003 Validated

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, carbon dioxide.
EXPLOSION Risk of fire and explosion on contact with oxidants.


EXPOSURE


•INHALATION Cough.
Local exhaust.
Fresh air, rest. Refer for medical attention.
•SKIN
Protective gloves.
Remove contaminated clothes. Rinse skin with plenty of water or shower.
•EYES
Safety goggles.
First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
•INGESTION
Do not eat, drink, or smoke during work.
Rinse mouth. Refer for medical attention.

SPILLAGE DISPOSAL

STORAGE

PACKAGING & LABELLING

Sweep spilled substance into covered containers; if appropriate, moisten first to prevent dusting. Do NOT let this chemical enter the environment. (Extra personal protection: P2 filter respirator for harmful particles.)
Separated from strong oxidants.

ICSC: 0676 Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities (C) IPCS CEC 1994. No modifications to the International version have been made except to add the OSHA PELs, NIOSH RELs and NIOSH IDLH values.

1,2,4,5-TETRACHLOROBENZENE

ICSC: 0676

I

M

P

O

R

T

A

N

T


D

A

T

A

PHYSICAL STATE; APPEARANCE:
COLOURLESS CRYSTALS

PHYSICAL DANGERS:


CHEMICAL DANGERS:
The substance decomposes on burning producing toxic and corrosive fumes including hydrogen chloride . Reacts with strong oxidants .

OCCUPATIONAL EXPOSURE LIMITS:
TLV not established.


ROUTES OF EXPOSURE:
The substance can be absorbed into the body by inhalation of its aerosol and by ingestion.

INHALATION RISK:
Evaporation at 20°C is negligible; a harmful concentration of airborne particles can, however, be reached quickly on spraying or when dispersed, especially if powdered.

EFFECTS OF SHORT-TERM EXPOSURE:


EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
The substance may have effects on the liver , resulting in liver impairment .

PHYSICAL
PROPERTIES

Boiling point: 243-246°C
Melting point: 139-140°C
Density: 1.83
g/cm3
Solubility in water: 2.16 mg/l
at 25 °C
Vapour pressure, Pa at 25°C: 0.7
Relative vapour density (air = 1): 7.4
Flash point: 155°C c.c.
Octanol/water partition coefficient as log Pow: 4.9

ENVIRONMENTAL
DATA

The substance is very toxic to aquatic organisms. Bioaccumulation of this chemical may occur in fish.

N O T E S

Health effects of exposure to the substance have not been investigated adequately.
NFPA Code: H 1; F 1; R 0;

ADDITIONAL INFORMATION



ICSC: 0676 1,2,4,5-TETRACHLOROBENZENE
(C) IPCS, CEC, 1994
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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