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Isobutyl alcohol

Synonyms & Trade Names
IBA, Isobutanol, Isopropylcarbinol, 2-Methyl-1-propanol
CAS No.
78-83-1
RTECS No.
NP9625000
DOT ID & Guide
1212 129
Formula
(CH₃)₂CHCH₂OH
Conversion
1 ppm = 3.03 mg/m3
IDLH
1600 ppm
See: 78831
Exposure Limits
NIOSH REL
TWA 50 ppm (150 mg/m3)
OSHA PEL
TWA 100 ppm (300 mg/m3) See Appendix G
Measurement Methods
NIOSH 1401 , 1405;
OSHA 7
See: NMAM or OSHA Methods
Physical Description
Colorless, oily liquid with a sweet, musty odor.
Molecular Weight
74.1
Boiling Point
227°F
Freezing Point
-162°F
Solubility
10%
Vapor Pressure
9 mmHg
Ionization Potential
10.12 eV
Specific Gravity
0.80
Flash Point
82°F
Upper Exposive Limit
(202°F): 10.6%
Lower Explosive Limit
(123°F): 1.7%
Class IC Flammable Liquid: Fl.P. at or above 73°F and below 100°F.
Incompatibilities & Reactivities
Strong oxidizers
Exposure Routes
inhalation, ingestion, skin and/or eye contact
Symptoms
irritation eyes, skin, throat; headache, drowsiness; skin cracking; 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:Water flush promptly
Breathing:Respiratory support
Swallow:Medical attention immediately
Respirator Recommendations

NIOSH

Up to 500 ppm:
(APF = 10) Any chemical cartridge respirator with organic vapor cartridge(s)*
(APF = 10) Any supplied-air respirator*

Up to 1250 ppm:
(APF = 25) Any supplied-air respirator operated in a continuous-flow mode*
(APF = 25) Any powered, air-purifying respirator with organic vapor cartridge(s)*

Up to 1600 ppm:
(APF = 50) Any chemical cartridge respirator with a full facepiece and organic vapor cartridge(s)
(APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted organic vapor canister
(APF = 50) Any powered, air-purifying respirator with a tight-fitting facepiece and organic vapor cartridge(s)*
(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: 0113

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