# NIOSH Pocket Guide to Chemical Hazards
Methyl isobutyl carbinol | CAS 108-11-2
(CH3)2CHCH2CH(OH)CH3 | RTECS SA7350000
Synonyms & Trade Names Isobutylmethylcarbinol, Methyl amyl alcohol, 4-Methyl-2-pentanol, MIBC | DOT ID & Guide 2053 129
Exposure Limits | NIOSH REL: TWA 25 ppm (100 mg/m3) ST 40 ppm (165 mg/m3) [skin]
OSHA PEL†: TWA 25 ppm (100 mg/m3) [skin]
IDLH 400 ppm | Conversion 1 ppm = 4.18 mg/m3
Physical Description Colorless liquid with a mild odor.
MW: 102.2 | BP: 271°F | FRZ: -130°F | Sol: 2%
VP: 3 mmHg | IP: ? |  | Sp.Gr: 0.81
Fl.P: 106°F | UEL: 5.5% | LEL: 1.0% |
Class II Combustible Liquid: Fl.P. at or above 100°F and below 140°F.
Incompatibilities & Reactivities Strong oxidizers
Measurement Methods NIOSH 1402; OSHA 7
Personal Protection & Sanitation Skin: Prevent skin contact Eyes: Prevent eye contact Wash skin: When contaminated Remove: When wet or contaminated 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 250 ppm: (APF = 10) Any supplied-air respirator* Up to 400 ppm: (APF = 25) Any supplied-air respirator 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
Exposure Routes inhalation, skin absorption, ingestion, skin and/or eye contact
Symptoms Irritation eyes, skin; headache, drowsiness; dermatitis; in animals: narcosis
Target Organs Eyes, skin, central nervous system
See also: INTRODUCTION