sec-Butyl alcohol
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CAS
78-92-2
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CH3CH(OH)CH2CH3
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RTECS
EO1750000
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Synonyms & Trade Names
2-Butanol, Butylene hydrate, 2-Hydroxybutane, Methyl ethyl carbinol
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DOT ID & Guide
1120 / 129
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Exposure
Limits
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NIOSH REL: TWA 100 ppm (305 mg/m3) ST 150 ppm (455 mg/m3)
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OSHA PEL†: TWA 150 ppm (450 mg/m3)
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IDLH
2000 ppm
See: 78922
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Conversion
1 ppm = 3.03 mg/m3
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Physical Description
Colorless liquid with a strong, pleasant odor.
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MW: 74.1
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BP: 211°F
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FRZ: -175°F
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Sol: 16%
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VP: 12 mmHg
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IP: 10.10 eV
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Sp.Gr: 0.81
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Fl.P: 75°F
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UEL(212°F): 9.8%
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LEL(212°F): 1.7%
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Class IC Flammable Liquid: Fl.P. at or above 73°F and below 100°F.
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Incompatibilities & Reactivities
Strong oxidizers, organic peroxides, perchloric & permonosulfuric acids
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Measurement Methods
NIOSH 1405, 1450; OSHA 7
See: NMAM or OSHA Methods |
Personal Protection & Sanitation (See protection)
Skin: Prevent skin contact
Eyes: Prevent eye contact
Wash skin: When contaminated
Remove: When wet (flammable)
Change: No recommendation
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First Aid (See procedures)
Eye: Irrigate immediately
Skin: Water flush promptly
Breathing: Respiratory support
Swallow: Medical attention immediately
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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
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Exposure Routes
inhalation, ingestion, skin and/or eye contact
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Symptoms
Irritation eyes, skin, nose, throat; narcosis
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Target Organs
Eyes, skin, respiratory system, central nervous system
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See also: INTRODUCTION
See ICSC CARD: 0112 |
