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sec-Butyl alcohol

Synonyms & Trade Names
2-Butanol, Butylene hydrate, 2-Hydroxybutane, Methyl ethyl carbinol
CAS No.
78-92-2
RTECS No.
EO1750000
DOT ID & Guide
1120 129
Formula
CH₃CH(OH)CH₂CH₃
Conversion
1 ppm = 3.03 mg/m3
IDLH
2000 ppm
See: 78922
Exposure Limits
NIOSH REL
TWA 100 ppm (305 mg/m3) ST 150 ppm (455 mg/m3)
OSHA PEL
TWA 150 ppm (450 mg/m3) See Appendix G
Measurement Methods
NIOSH 1401 , 1405;
OSHA 7
See: NMAM or OSHA Methods
Physical Description
Colorless liquid with a strong, pleasant odor.
Molecular Weight
74.1
Boiling Point
211°F
Freezing Point
-175°F
Solubility
16%
Vapor Pressure
12 mmHg
Ionization Potential
10.10 eV
Specific Gravity
0.81
Flash Point
75°F
Upper Exposive Limit
(212°F): 9.8%
Lower Explosive Limit
(212°F): 1.7%
Class IC Flammable Liquid: Fl.P. at or above 73°F and below 100°F.
Incompatibilities & Reactivities
Strong oxidizers, organic peroxides, perchloric & permonosulfuric acids
Exposure Routes
inhalation, ingestion, skin and/or eye contact
Symptoms
irritation eyes, skin, nose, throat; 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 1000 ppm:
(APF = 10) Any chemical cartridge respirator with organic vapor cartridge(s)*
(APF = 10) Any supplied-air respirator*

Up to 2000 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)*
(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 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: 0112

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