# NIOSH Pocket Guide to Chemical Hazards
Diethylamine | CAS 109-89-7
(C2H5)2NH | RTECS HZ8750000
Synonyms & Trade Names Diethamine; N,N-Diethylamine; N-Ethylethanamine | DOT ID & Guide 1154 132
Exposure Limits | NIOSH REL: TWA 10 ppm (30 mg/m3) ST 25 ppm (75 mg/m3)
OSHA PEL†: TWA 25 ppm (75 mg/m3)
IDLH 200 ppm | Conversion 1 ppm = 2.99 mg/m3
Physical Description Colorless liquid with a fishy, ammonia-like odor.
MW: 73.1 | BP: 132°F | FRZ: -58°F | Sol: Miscible
VP: 192 mmHg | IP: 8.01 eV |  | Sp.Gr: 0.71
Fl.P: -15°F | UEL: 10.1% | LEL: 1.8% |
Class IB Flammable Liquid: Fl.P. below 73°F and BP at or above 100°F.
Incompatibilities & Reactivities Strong oxidizers, strong acids, cellulose nitrate
Measurement Methods NIOSH 2010; OSHA 41
Personal Protection & Sanitation Skin: Prevent skin contact Eyes: Prevent eye contact Wash skin: When contaminated Remove: When wet (flammable) Change: No recommendation Provide: Eyewash (>0.5%), Quick drench (liquid) | First Aid (See procedures) Eye: Irrigate immediately Skin: Water flush immediately Breathing: Respiratory support Swallow: Medical attention immediately
Respirator Recommendations NIOSH Up to 200 ppm: (APF = 25) Any supplied-air respirator operated in a continuous-flow mode£/(APF = 25) Any powered, air-purifying respirator with cartridge(s) providing protection against the compound of concern£/(APF = 50) Any chemical cartridge respirator with a full facepiece and 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 = 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 degeneration
Target Organs Eyes, skin, respiratory system, cardiovascular system
See also: INTRODUCTION