# NIOSH Pocket Guide to Chemical Hazards
n-Butylamine | CAS 109-73-9
CH3CH2CH2CH2NH2 | RTECS EO2975000
Synonyms & Trade Names 1-Aminobutane, Butylamine | DOT ID & Guide 1125 132
Exposure Limits | NIOSH REL: C 5 ppm (15 mg/m3) [skin]
OSHA PEL: C 5 ppm (15 mg/m3) [skin]
IDLH 300 ppm | Conversion 1 ppm = 2.99 mg/m3
Physical Description Colorless liquid with a fishy, ammonia-like odor.
MW: 73.2 | BP: 172°F | FRZ: -58°F | Sol: Miscible
VP: 82 mmHg | IP: 8.71 eV |  | Sp.Gr: 0.74
Fl.P: 10°F | UEL: 9.8% | LEL: 1.7% |
Class IB Flammable Liquid: Fl.P. below 73°F and BP at or above 100°F.
Incompatibilities & Reactivities Strong oxidizers, strong acids [Note: May corrode some metals in presence of water.]
Measurement Methods NIOSH 2012
Personal Protection & Sanitation Skin: Prevent skin contact Eyes: Prevent eye contact Wash skin: When contaminated Remove: When wet (flammable) Change: No recommendation Provide: Eyewash, Quick drench | First Aid (See procedures) Eye: Irrigate immediately Skin: Water flush immediately Breathing: Respiratory support Swallow: Medical attention immediately
Respirator Recommendations NIOSH/OSHA Up to 50 ppm: (APF = 10) Any chemical cartridge respirator with cartridge(s) providing protection against the compound of concern*/(APF = 10) Any supplied-air respirator* Up to 125 ppm: (APF = 25) Any supplied-air respirator operated in a continuous-flow mode*/(APF = 25) Any powered, air-purifying respirator with cartridge(s) providing protection against the compound of concern* Up to 250 ppm: (APF = 50) Any chemical cartridge respirator with a full facepiece and cartridge(s) providing protection against the compound of concern/(APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted canister providing protection against the compound of concern/(APF = 50) Any powered, air-purifying respirator with a tight-fitting facepiece and cartridge(s) providing protection against the compound of concern*/(APF = 50) Any self-contained breathing apparatus with a full facepiece/(APF = 50) Any supplied-air respirator with a full facepiece Up to 300 ppm: (APF = 2000) Any supplied-air respirator that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode 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 canister providing protection against the compound of concern/Any appropriate escape-type, self-contained breathing apparatus
Exposure Routes inhalation, skin absorption, ingestion, skin and/or eye contact
Symptoms Irritation eyes, skin, nose, throat; headache; skin flush, burns
Target Organs Eyes, skin, respiratory system
See also: INTRODUCTION