September 2010
NIOSH Publication Number 2010-168c

Triethylamine

Synonyms & Trade Names
TEA
CAS No.
121-44-8
RTECS No.
YE0175000
DOT ID & Guide
1296 132
Formula
(C2H5)3N
Conversion
1 ppm = 4.14 mg/m3
IDLH
200 ppm
See: 121448
Exposure Limits
NIOSH REL
: See Appendix D
OSHA PEL
†: TWA 25 ppm (100 mg/m3)
Measurement Methods

NIOSH S152 (II-3);
OSHA PV2060
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
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
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
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

Important additional information about respirator selection

See also: INTRODUCTION   See ICSC CARD: 0203