Hexane isomers (excluding n-Hexane)
Synonyms & Trade Names
Diethylmethylmethane, Diisopropyl, 2,2-Dimethylbutane, 2,3-Dimethylbutane, Isohexane, 2-Methylpentane, 3-Methylpentane [Note: Also see specific listing for n-Hexane.]Exposure Limits
NIOSH REL
TWA 100 ppm (350 mg/m3) C 510 ppm (1800 mg/m3) [15-minute]OSHA PEL
none See Appendix GPhysical Description
Clear liquids with mild, gasoline-like odors. [Note: Includes all the isomers of hexane except n-hexane.]Molecular Weight
86.2Boiling Point
122-145°FFreezing Point
-245 to -148°FSolubility
InsolubleVapor Pressure
?Ionization Potential
?Specific Gravity
0.65-0.66Flash Point
-54 to 19°FUpper Exposive Limit
?Lower Explosive Limit
?Incompatibilities & Reactivities
Strong oxidizersExposure Routes
inhalation, ingestion, skin and/or eye contactSymptoms
irritation eyes, skin, respiratory system; headache, dizziness; nausea; chemical pneumonitis (aspiration liquid); dermatitisTarget Organs
Eyes, skin, respiratory system, central nervous systemPersonal 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 immediately
Breathing:Respiratory support
Swallow:Medical attention immediately
Respirator Recommendations
NIOSH
Up to 1000 ppm:
(APF = 10) Any supplied-air respirator*
Up to 2500 ppm:
(APF = 25) Any supplied-air respirator operated in a continuous-flow mode*
Up to 5000 ppm:
(APF = 50) Any supplied-air respirator that has a tight-fitting facepiece and is operated in a continuous-flow mode*
(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
See also
INTRODUCTION- Page last reviewed:April 11, 2016
- Page last updated:April 11, 2016
- Content source:
- National Institute for Occupational Safety and Health (NIOSH) Education and Information Division