# NIOSH Pocket Guide to Chemical Hazards
Cyclohexene | CAS 110-83-8
C6H10 | RTECS GW2500000
Synonyms & Trade Names Benzene tetrahydride, Tetrahydrobenzene | DOT ID & Guide 2256 130
Exposure Limits | NIOSH REL: TWA 300 ppm (1015 mg/m3)
OSHA PEL: TWA 300 ppm (1015 mg/m3)
IDLH 2000 ppm | Conversion 1 ppm = 3.36 mg/m3
Physical Description Colorless liquid with a sweet odor.
MW: 82.2 | BP: 181°F | FRZ: -154°F | Sol: Insoluble
VP: 67 mmHg | IP: 8.95 eV |  | Sp.Gr: 0.81
Fl.P: 11°F | UEL: ? | LEL: ? |
Class IB Flammable Liquid: Fl.P. below 73°F and BP at or above 100°F.
Incompatibilities & Reactivities Strong oxidizers [Note: Forms explosive peroxides with oxygen upon storage.]
Measurement Methods NIOSH 1500; OSHA 7
Personal Protection & Sanitation Skin: Prevent skin contact Eyes: Prevent eye contact Wash skin: When contaminated Remove: When wet (flammable) Change: No recommendation | First Aid (See procedures) Eye: Irrigate immediately Skin: Soap wash promptly Breathing: Respiratory support Swallow: Medical attention immediately
Respirator Recommendations NIOSH/OSHA Up to 2000 ppm: (APF = 25) Any supplied-air respirator operated in a continuous-flow mode£/(APF = 25) Any powered, air-purifying respirator with organic vapor cartridge(s)£/(APF = 50) Any chemical cartridge respirator with a full facepiece and 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 = 50) Any self-contained breathing apparatus with a full facepiece/(APF = 50) Any supplied-air respirator 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, respiratory system; drowsiness
Target Organs Eyes, skin, respiratory system, central nervous system
See also: INTRODUCTION