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Isopropyl alcohol

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Synonyms & Trade Names
Dimethyl carbinol, IPA, Isopropanol, 2-Propanol, sec-Propyl alcohol, Rubbing alcohol
CAS No.
67-63-0
RTECS No.
NT8050000
DOT ID & Guide
1219 129
Formula
(CH₃)₂CHOH
Conversion
1 ppm = 2.46 mg/m3
IDLH
2000 ppm [10%LEL]
See: 67630
Exposure Limits
NIOSH REL
TWA 400 ppm (980 mg/m3) ST 500 ppm (1225 mg/m3)
OSHA PEL
TWA 400 ppm (980 mg/m3) See Appendix G
Measurement Methods
NIOSH 1400;
OSHA 109
See: NMAM or OSHA Methods
Physical Description
Colorless liquid with the odor of rubbing alcohol.
Molecular Weight
60.1
Boiling Point
181°F
Freezing Point
-127°F
Solubility
Miscible
Vapor Pressure
33 mmHg
Ionization Potential
10.10 eV
Specific Gravity
0.79
Flash Point
53°F
Upper Explosive Limit
(200°F): 12.7%
Lower Explosive Limit
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
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
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
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

Important additional information about respirator selection

See also
INTRODUCTION   ICSC CARD: 0554   MEDICAL TESTS: 0124
Page last reviewed: October 30, 2019
Content source: National Institute for Occupational Safety and Health