NIOSH Publication No. 2005-151:

NIOSH Pocket Guide to Chemical Hazards

September 2005

Divinyl benzene

CAS
1321-74-0 (mixed isomers)

C6H4(HC=CH2)2

RTECS
CZ9370000
Synonyms & Trade Names

Diethyl benzene, DVB, Vinylstyrene [Note: Commercial product contains all 3 isomers, but m-isomer predominates. Usually contains an inhibitor to prevent polymerization.]
DOT ID & Guide
2049 / 130

Exposure
Limits

NIOSH REL: TWA 10 ppm (50 mg/m3)
OSHA PEL: none
IDLH
N.D. See: IDLH INDEX
Conversion
1 ppm = 5.33 mg/m3
Physical Description
Pale, straw-colored liquid.
MW: 130.2
BP: 392°F
FRZ: -88°F
Sol: 0.005%
VP: 0.7 mmHg
IP: ?

Sp.Gr: 0.93
Fl.P(oc): 169°F
UEL: 6.2%
LEL: 1.1%

Class IIIA Combustible Liquid: Fl.P. at or above 140F and below 200F.
Incompatibilities & Reactivities

None reported
Measurement Methods
OSHA 89
See: NMAM or OSHA Methods
Personal Protection & Sanitation
(See protection)
Skin: Prevent skin contact
Eyes: Prevent eye contact
Wash skin: When contaminated
Remove: When wet or contaminated
Change: No recommendation
Provide: Eyewash, Quick drench
First Aid
(See procedures)
Eye: Irrigate immediately
Skin: Soap flush immediately
Breathing: Respiratory support
Swallow: Medical attention immediately
Respirator Recommendations
Not available.
Important additional information about respirator selection
Exposure Routes
inhalation, ingestion, skin and/or eye contact
Symptoms
Irritation eyes, skin, respiratory system; skin burns; in animals: central nervous system depression
Target Organs
Eyes, skin, respiratory system, central nervous system
See also: INTRODUCTION   See ICSC CARD: 0885