# NIOSH Pocket Guide to Chemical Hazards
Ethanolamine | CAS 141-43-5
NH2CH2CH2OH | RTECS KJ5775000
Synonyms & Trade Names 2-Aminoethanol, beta-Aminoethyl alcohol, Ethylolamine, 2-Hydroxyethylamine, Monoethanolamine | DOT ID & Guide 2491 153
Exposure Limits | NIOSH REL: TWA 3 ppm (8 mg/m3) ST 6 ppm (15 mg/m3)
OSHA PEL†: TWA 3 ppm (6 mg/m3)
IDLH 30 ppm | Conversion 1 ppm = 2.50 mg/m3
Physical Description Colorless, viscous liquid or solid (below 51°F) with an unpleasant, ammonia-like odor.
MW: 61.1 | BP: 339°F | FRZ: 51°F | Sol: Miscible
VP: 0.4 mmHg | IP: 8.96 eV |  | Sp.Gr: 1.02
Fl.P: 186°F | UEL: 23.5% | LEL(284°F): 3.0% |
Class IIIA Combustible Liquid: Fl.P. at or above 140°F and below 200°F.
Incompatibilities & Reactivities Strong oxidizers, strong acids, iron [Note: May attack copper, brass, and rubber.]
Measurement Methods NIOSH 2007
Personal Protection & Sanitation Skin: Prevent skin contact Eyes: Prevent eye contact Wash skin: When contaminated Remove: When wet or contaminated Change: Daily Provide: Eyewash | First Aid (See procedures) Eye: Irrigate immediately Skin: Water flush promptly Breathing: Respiratory support Swallow: Medical attention immediately
Respirator Recommendations NIOSH/OSHA Up to 30 ppm: (APF = 10) Any chemical cartridge respirator with 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 = 25) Any powered, air-purifying respirator with cartridge(s) providing protection against the compound of concern*/(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 canister providing protection against the compound of concern/Any appropriate escape-type, self-contained breathing apparatus
Exposure Routes inhalation, ingestion, skin and/or eye contact
Symptoms Irritation eyes, skin, respiratory system; drowsiness
Target Organs Eyes, skin, respiratory system, central nervous system
See also: INTRODUCTION