# NIOSH Pocket Guide to Chemical Hazards
Isopropyl alcohol | CAS 67-63-0
(CH3)2CHOH | RTECS NT8050000
Synonyms & Trade Names Dimethyl carbinol, IPA, Isopropanol, 2-Propanol, sec-Propyl alcohol, Rubbing alcohol | DOT ID & Guide 1219 129
Exposure Limits | NIOSH REL: TWA 400 ppm (980 mg/m3) ST 500 ppm (1225 mg/m3)
OSHA PEL†: TWA 400 ppm (980 mg/m3)
IDLH 2000 ppm [10%LEL] | Conversion 1 ppm = 2.46 mg/m3
Physical Description Colorless liquid with the odor of rubbing alcohol.
MW: 60.1 | BP: 181°F | FRZ: -127°F | Sol: Miscible
VP: 33 mmHg | IP: 10.10 eV |  | Sp.Gr: 0.79
Fl.P: 53°F | UEL(200°F): 12.7% | LEL: 2.0% |
Class IB Flammable Liquid: Fl.P. below 73°F and BP at or above 100°F.
Incompatibilities & Reactivities Strong oxidizers, acetaldehyde, chlorine, ethylene oxide, acids, isocyanates
Measurement Methods NIOSH 1400; OSHA 109
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 2000 ppm: (APF = 25) Any supplied-air respirator operated in a continuous-flow mode£/(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 = 25) Any powered, air-purifying respirator with 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
Exposure Routes inhalation, ingestion, skin and/or eye contact
Symptoms Irritation eyes, nose, throat; drowsiness, dizziness, headache; dry cracking skin; in animals: narcosis
Target Organs Eyes, skin, respiratory system
See also: INTRODUCTION