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) See Appendix G

Measurement Methods

NIOSH S152 (II-3);
OSHA PV2060
See: NMAM or OSHA Methods

Physical Description

Colorless liquid with a strong, ammonia-like odor.

Molecular Weight

101.2

Boiling Point

193°F

Freezing Point

-175°F

Solubility

Vapor Pressure

54 mmHg

Ionization Potential

7.50 eV

Specific Gravity

0.73

Flash Point

20°F

Upper Explosive Limit

8.0%

Lower Explosive Limit

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

Triethylamine

NIOSH REL

OSHA PEL

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