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.]

Physical Description

Clear liquids with mild, gasoline-like odors. [Note: Includes all the isomers of hexane except n-hexane.]

Incompatibilities & Reactivities

Strong oxidizers

Symptoms

irritation eyes, skin, respiratory system; headache, dizziness; nausea; chemical pneumonitis (aspiration liquid); dermatitis

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

Important additional information about respirator selection