International Chemical Safety Cards

o-DICHLOROBENZENE

ICSC: 1066

o-DICHLOROBENZENE
1,2-Dichlorobenzene
ortho-Dichlorobenzene
o-Dichlorobenzol
C₆H₄Cl₂
Molecular mass: 147.0
CAS # 95-50-1
RTECS # CZ4500000
ICSC # 1066
UN # 1591
EC # 602-034-00-7

TYPES OF HAZARD/ EXPOSURE	ACUTE HAZARDS/ SYMPTOMS	PREVENTION	FIRST AID/ FIRE FIGHTING
FIRE	Combustible.	NO open flames.	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.

EXPOSURE
INHALATION	Cough. Drowsiness. Sore throat. Unconsciousness.	Ventilation, local exhaust, or breathing protection.	Fresh air, rest. Refer for medical attention.
SKIN	Redness. Burning sensation. Symptoms may be delayed. Blisters.	Protective gloves. Protective clothing.	Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer for medical attention.
EYES	Redness. 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. Diarrhoea. Nausea. Vomiting.	Do not eat, drink, or smoke during work.	Rinse mouth. Refer for medical attention.

SPILLAGE DISPOSAL

STORAGE

PACKAGING & LABELLING

Collect leaking and spilled liquid in sealable containers as far as possible. Absorb remaining liquid in sand or inert absorbent and remove to safe place. Do NOT let this chemical enter the environment (extra personal protection: filter A for organic vapours.

Separated from strong oxidants, acids, food and feedstuffs and aluminum compounds.

Do not transport with food and feedstuffs.
Xn symbol
N symbol
R: 22-36/37/38-50/53
S: (2-)23-60-61
UN Hazard Class: 6.1
UN Packing Group: III
Marine pollutant.

SEE IMPORTANT INFORMATION ON BACK

ICSC: 1066

Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities © IPCS CEC 1993

International Chemical Safety Cards

o-DICHLOROBENZENE

ICSC: 1066

I

M

P

O

R

T

A

N

T

D

A

T

A

PHYSICAL STATE; APPEARANCE:
COLOURLESS TO PALE-YELLOW, VISCOUS LIQUID , WITH CHARACTERISTIC ODOUR.

PHYSICAL DANGERS:

CHEMICAL DANGERS:
The substance decomposes on heating producing toxic and corrosive gases and fumes, e.g. hydrogen chloride. See ICSC 0163. Reacts with oxidants, acids, aluminium and its alloys.

OCCUPATIONAL EXPOSURE LIMITS (OELs):
TLV: 25 ppm; 150 mg/m³ (as TWA); 50 ppm; 301 mg/m³ (as STEL) (skin) (ACGIH 1995-1996).
MAK: 50 ppm; 300 mg/m³; (1992).

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 liquid, left on the skin may produce blistering. The substance may cause effects on the the central nervous system. Exposure could cause lowering of consciousness.

EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
Repeated or prolonged contact may cause skin sensitization. The substance may have effects on the liver and kidneys.

PHYSICAL
PROPERTIES

Boiling point: 180-183°C
Melting point: -17°C
Relative density (water = 1): 1.3
Solubility in water: none
Vapour pressure, kPa at 20°C: 0.16
Relative vapour density (air = 1): 5.1

Relative density of the vapour/air-mixture at 20°C (air = 1): 1.006
Flash point: 66°C c.c.
Auto-ignition temperature: 648°C
Explosive limits, vol% in air: 2.2-9.2
Octanol/water partition coefficient as log Pow: 3.38

IMPORTANT LEGAL NOTICE:

Neither the CEC or 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. 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.