NIOSH Pocket Guide to Chemical Hazards

Cyclohexane CAS 110-82-7
C6H12 RTECS GU6300000
Synonyms & Trade Names
Benzene hexahydride, Hexahydrobenzene, Hexamethylene, Hexanaphthene
DOT ID & Guide
1145 128
Exposure
Limits
NIOSH REL: TWA 300 ppm (1050 mg/m3)
OSHA PEL: TWA 300 ppm (1050 mg/m3)
IDLH 1300 ppm [10%LEL] Conversion 1 ppm = 3.44 mg/m3
Physical Description
Colorless liquid with a sweet, chloroform-like odor. [Note: A solid below 44°F.]
MW: 84.2
BP: 177°F
FRZ: 44°F
Sol: Insoluble
VP: 78 mmHg
IP: 9.88 eV

Sp.Gr: 0.78
Fl.P: 0°F
UEL: 8%
LEL: 1.3%

Class IB Flammable Liquid: Fl.P. below 73F and BP at or above 100F.
Incompatibilities & Reactivities
Oxidizers
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: Water flush promptly
Breathing: Respiratory support
Swallow: Medical attention immediately
Respirator Recommendations NIOSH/OSHA
Up to 1300 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; dermatitis; narcosis, coma
Target Organs Eyes, skin, respiratory system, central nervous system
See also: INTRODUCTION