NIOSH Publication No. 2005-151:

NIOSH Pocket Guide to Chemical Hazards

September 2005

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 See: 109897
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 73F and BP at or above 100F.
Incompatibilities & Reactivities

Strong oxidizers, strong acids, cellulose nitrate
Measurement Methods
NIOSH 2010; OSHA 41
See: NMAM or OSHA Methods
Personal Protection & Sanitation
(See protection)
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
Important additional information about respirator selection
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   See ICSC CARD: 0444