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Methylcyclohexane

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Synonyms & Trade Names
Cyclohexylmethane, Hexahydrotoluene
CAS No.
108-87-2
RTECS No.
GV6125000
DOT ID & Guide
2296 128
Formula
CH₃C₆H₁₁
Conversion
1 ppm = 4.02 mg/m3
IDLH
1200 ppm [LEL]
See: 108872
Exposure Limits
NIOSH REL
TWA 400 ppm (1600 mg/m3)
OSHA PEL
TWA 500 ppm (2000 mg/m3) See Appendix G
Measurement Methods
NIOSH 1500;
OSHA 7
See: NMAM or OSHA Methods
Physical Description
Colorless liquid with a faint, benzene-like odor.
Molecular Weight
98.2
Boiling Point
214°F
Freezing Point
-196°F
Solubility
Insoluble
Vapor Pressure
37 mmHg
Ionization Potential
9.85 eV
Specific Gravity
0.77
Flash Point
25°F
Upper Explosive Limit
6.7%
Lower Explosive Limit
1.2%
Class IB Flammable Liquid: Fl.P. below 73°F and BP at or above 100°F.
Incompatibilities & Reactivities
Strong oxidizers
Exposure Routes
inhalation, ingestion, skin and/or eye contact
Symptoms
irritation eyes, skin, nose, throat; dizziness, drowsiness; In Animals: narcosis
Target Organs
Eyes, skin, respiratory system, central nervous system
Personal Protection/Sanitation
(See protection codes)
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

Up to 1200 ppm:
(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

Important additional information about respirator selection

See also
INTRODUCTION   ICSC CARD: 0923
Page last reviewed: October 30, 2019
Content source: National Institute for Occupational Safety and Health