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NIOSH

O-CHLOROSTYRENE

ICSC: 1388

2-Chlorostyrene
2-Chloroethenylbenzene
C8H7Cl
Molecular mass: 138.6
ICSC # 1388 		CAS # 2039-87-4
RTECS # WL4160000
July 03, 2002 Validated

TYPES OF HAZARD/ EXPOSURE

ACUTE HAZARDS/ SYMPTOMS

PREVENTION

FIRST AID/
FIRE FIGHTING

FIRE Flammable. Gives off irritating or toxic fumes (or gases) in a fire.
NO open flames, NO sparks, and NO smoking.
Powder, water spray, foam, carbon dioxide.
EXPLOSION Above 58°C explosive vapour/air mixtures may be formed.
Above 58°C use a closed system, ventilation, and explosion-proof electrical equipment.
In case of fire: keep drums, etc., cool by spraying with water.
EXPOSURE


•INHALATION See Notes.
Ventilation, local exhaust, or breathing protection.
Fresh air, rest. Refer for medical attention.
•SKIN Redness.
Protective gloves.
Rinse and then wash skin with water and soap.
•EYES Redness. Pain.
Safety spectacles.
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.

SPILLAGE DISPOSAL

STORAGE

PACKAGING & LABELLING

Remove all ignition sources. Ventilation. Collect leaking liquid in sealable containers. Absorb remaining liquid in sand or inert absorbent and remove to safe place. (Extra personal protection: filter respirator for organic gases and vapours.)
Fireproof. Keep in a well-ventilated room. Cool. Store only if stabilized.

ICSC: 1388 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.

O-CHLOROSTYRENE

ICSC: 1388

I

M

P

O

R

T

A

N

T


D

A

T

A

PHYSICAL STATE; APPEARANCE:
YELLOW LIQUID

PHYSICAL DANGERS:


CHEMICAL DANGERS:
On combustion, forms toxic gasesincludinghydrogen chloridephosgene. The substance can under specific circumstances form peroxides, initiating explosive polymerization. The substance may polymerize under the influence of acid(s) and base(s) with fire or explosion hazard.

OCCUPATIONAL EXPOSURE LIMITS:
TLV: 50 ppm as TWA; 75 ppm as STEL (ACGIH 2001).
OSHA PEL†: none
NIOSH REL: TWA 50 ppm (285 mg/m3) ST 75 ppm (428 mg/m3)
NIOSH IDLH: N.D. See: IDLH INDEX


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

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 skin . See Notes.

EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:

PHYSICAL
PROPERTIES

Boiling point: 188.7°C
Melting point: -63.2°C
Relative density (water = 1): 1.1
Solubility in water:
very poor
Vapour pressure, kPa at 25°C: 0.13
Relative vapour density (air = 1): 4.8
Relative density of the vapour/air-mixture at 20°C (air = 1): 1.01
Flash point: 58°C c.c.
Octanol/water partition coefficient as log Pow: 3.58

ENVIRONMENTAL
DATA


N O T E S

Symptoms are expected to be similar to styrene, see ICSC 0073. Insufficient data are available on the effect of this substance on human health, therefore utmost care must be taken. Check for peroxides prior to distillation; eliminate if found.
Transport Emergency Card: TEC (R)-30GF1-III-9

ADDITIONAL INFORMATION



ICSC: 1388 O-CHLOROSTYRENE
(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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