# NIOSH Pocket Guide to Chemical Hazards
Vinyl toluene | CAS 25013-15-4 (inhibited)
CH2=CHC6H4CH3 | RTECS WL5075000
Synonyms & Trade Names Ethenylmethylbenzene, Methylstyrene, Tolyethylene | DOT ID & Guide 2618 130P
Exposure Limits | NIOSH REL: TWA 100 ppm (480 mg/m3)
OSHA PEL: TWA 100 ppm (480 mg/m3)
IDLH 400 ppm | Conversion 1 ppm = 4.83 mg/m3
Physical Description Colorless liquid with a strong, disagreeable odor.
MW: 118.2 | BP: 339°F | FRZ: -106°F | Sol: 0.009%
VP: 1 mmHg | IP: 8.20 eV |  | Sp.Gr: 0.89
Fl.P: 127°F | UEL: 11.0% | LEL: 0.8% |
Class II Combustible Liquid: Fl.P. at or above 100°F and below 140°F.
Incompatibilities & Reactivities Oxidizers, peroxides, strong acids, iron or aluminum salts [Note: Usually inhibited with tert-butyl catechol to prevent polymerization.]
Measurement Methods NIOSH 1501, OSHA 7
Personal Protection & Sanitation Skin: Prevent skin contact Eyes: Prevent eye contact Wash skin: When contaminated Remove: When wet or contaminated Change: No recommendation | First Aid (See procedures) Eye: Irrigate immediately Skin: Soap flush promptly Breathing: Respiratory support Swallow: Medical attention immediately
Respirator Recommendations NIOSH/OSHA Up to 400 ppm: (APF = 10) Any chemical cartridge respirator with organic vapor cartridge(s)*/(APF = 25) Any powered, air-purifying respirator with organic vapor cartridge(s)*/(APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted organic vapor canister/(APF = 10) Any supplied-air respirator*/(APF = 50) Any self-contained breathing apparatus with a full facepiece Emergency or planned entry into unknown concentrations or IDLH conditions: (APF = 10,000) Any self-contained breathing apparatus that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode/(APF = 10,000) Any supplied-air respirator that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode in combination with an auxiliary self-contained positive-pressure breathing apparatus Escape: (APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted organic vapor canister/Any appropriate escape-type, self-contained breathing apparatus
Exposure Routes inhalation, ingestion, skin and/or eye contact
Symptoms Irritation eyes, skin, upper respiratory system; drowsiness; in animals: narcosis
Target Organs Eyes, skin, respiratory system, central nervous system
See also: INTRODUCTION