# NIOSH Pocket Guide to Chemical Hazards
n-Propyl alcohol | CAS 71-23-8
CH3CH2CH2OH | RTECS UH8225000
Synonyms & Trade Names Ethyl carbinol, 1-Propanol, n-Propanol, Propyl alcohol | DOT ID & Guide 1274 129
Exposure Limits | NIOSH REL: TWA 200 ppm (500 mg/m3) ST 250 ppm (625 mg/m3) [skin]
OSHA PEL†: TWA 200 ppm (500 mg/m3)
IDLH 800 ppm | Conversion 1 ppm = 2.46 mg/m3
Physical Description Colorless liquid with a mild, alcohol-like odor.
MW: 60.1 | BP: 207°F | FRZ: -196°F | Sol: Miscible
VP: 15 mmHg | IP: 10.15 eV |  | Sp.Gr: 0.81
Fl.P: 72°F | UEL: 13.7% | LEL: 2.2% |
Class IB Flammable Liquid: Fl.P. below 73°F and BP at or above 100°F.
Incompatibilities & Reactivities Strong oxidizers
Measurement Methods NIOSH 1401; OSHA 7
Personal Protection & Sanitation 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 Breathing: Respiratory support Swallow: Medical attention immediately
Respirator Recommendations NIOSH/OSHA Up to 800 ppm: (APF = 10) Any chemical cartridge respirator with organic vapor cartridge(s)*/(APF = 25) Any powered, air-purifying respirator with 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 = 10) Any supplied-air respirator*/(APF = 50) Any self-contained breathing apparatus 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
Exposure Routes inhalation, skin absorption, ingestion, skin and/or eye contact
Symptoms Irritation eyes, nose, throat; dry cracking skin; drowsiness, headache; ataxia, gastrointestinal pain; abdominal cramps, nausea, vomiting, diarrhea; in animals: narcosis
Target Organs Eyes, skin, respiratory system, gastrointestinal tract, central nervous system
See also: INTRODUCTION