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Methyl isobutyl carbinol

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Synonyms & Trade Names
Isobutylmethylcarbinol, Methyl amyl alcohol, 4-Methyl-2-pentanol, MIBC
CAS No.
108-11-2
RTECS No.
SA7350000
DOT ID & Guide
2053 129
Formula
(CH₃)₂CHCH₂CH(OH)CH₃
Conversion
1 ppm = 4.18 mg/m3
IDLH
400 ppm
See: 108112
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] See Appendix G
Measurement Methods
NIOSH 1402 , 1405;
OSHA 7
See: NMAM or OSHA Methods
Physical Description
Colorless liquid with a mild odor.
Molecular Weight
102.2
Boiling Point
271°F
Freezing Point
-130°F
Solubility
2%
Vapor Pressure
3 mmHg
Ionization Potential
?
Specific Gravity
0.81
Flash Point
106°F
Upper Explosive Limit
5.5%
Lower Explosive Limit
1.0%
Class II Combustible Liquid: Fl.P. at or above 100°F and below 140°F.
Incompatibilities & Reactivities
Strong oxidizers
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
Personal Protection/Sanitation
(See protection codes)
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

Important additional information about respirator selection

See also
INTRODUCTION   ICSC CARD: 0665
Page last reviewed: October 30, 2019
Content source: National Institute for Occupational Safety and Health