# NIOSH Pocket Guide to Chemical Hazards
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. | 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 140°F and below 200°F.
Incompatibilities & Reactivities None reported
Measurement Methods OSHA 89
Personal Protection & Sanitation 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 To be added later
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