n-Butyl alcohol

Synonyms & Trade Names

1-Butanol, n-Butanol, Butyl alcohol, 1-Hydroxybutane, n-Propyl carbinol

CAS No.

71-36-3

RTECS No.

EO1400000

DOT ID & Guide

1120 129

Formula

CH₃CH₂CH₂CH₂OH

Conversion

1 ppm = 3.03 mg/m³

IDLH

1400 ppm [10%LEL]
See: 71363

Exposure Limits

NIOSH REL

C 50 ppm (150 mg/m³) [skin]

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 liquid with a strong, characteristic, mildly alcoholic odor.

Molecular Weight

74.1

Boiling Point

243°F

Freezing Point

-129°F

Solubility

Vapor Pressure

6 mmHg

Ionization Potential

10.04 eV

Specific Gravity

0.81

Flash Point

84°F

Upper Explosive Limit

11.2%

Lower Explosive Limit

1.4%

Class IC Flammable Liquid: Fl.P. at or above 73°F and below 100°F.

Incompatibilities & Reactivities

Strong oxidizers, strong mineral acids, alkali metals, halogens

Exposure Routes

inhalation, skin absorption, ingestion, skin and/or eye contact

Symptoms

irritation eyes, nose, throat; headache, dizziness, drowsiness; corneal inflammation, blurred vision, lacrimation (discharge of tears), photophobia (abnormal visual intolerance to light); dermatitis; possible auditory nerve damage, hearing loss; central nervous system depression

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 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 1400 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

n-Butyl alcohol

NIOSH REL

OSHA PEL

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