# NIOSH Pocket Guide to Chemical Hazards
Triethylamine | CAS 121-44-8
(C2H5)3N | RTECS YEO175000
Synonyms & Trade Names TEA | DOT ID & Guide 1296 132
Exposure Limits | NIOSH REL: See Appendix D
OSHA PEL†: TWA 25 ppm (100 mg/m3)
IDLH 200 ppm | Conversion 1 ppm = 4.14 mg/m3
Physical Description Colorless liquid with a strong, ammonia-like odor.
MW: 101.2 | BP: 193°F | FRZ: -175°F | Sol: 2%
VP: 54 mmHg | IP: 7.50 eV |  | Sp.Gr: 0.73
Fl.P: 20°F | UEL: 8.0% | LEL: 1.2% |
Class IB Flammable Liquid: Fl.P. below 73°F and BP at or above 100°F.
Incompatibilities & Reactivities Strong oxidizers, strong acids, chlorine, hypochlorite, halogenated compounds
Measurement Methods NIOSH S152 (II-3); OSHA PV2060
Personal Protection & Sanitation Skin: Prevent skin contact Eyes: Prevent eye contact Wash skin: When contaminated Remove: When wet (flammable) Change: No recommendation Provide: Eyewash (>1%), Quick drench (>1%) | First Aid (See procedures) Eye: Irrigate immediately Skin: Soap wash immediately Breathing: Respiratory support Swallow: Medical attention immediately
Respirator Recommendations OSHA Up to 200 ppm: (APF = 25) Any supplied-air respirator operated in a continuous-flow mode£/(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 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, respiratory system; in animals: myocardial, kidney, liver damage
Target Organs Eyes, skin, respiratory system, cardiovascular system, liver, kidneys
See also: INTRODUCTION