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Diethanolamine

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Synonyms & Trade Names
DEA, 2,2'-Dihydroxydiethyamine, Di(2-hydroxyethyl)amine, Diolamine, bis(2-Hydroxyethyl)amine, 2,2'-Iminodiethanol
CAS No.
111-42-2
RTECS No.
KL2975000
DOT ID & Guide
Formula
(HOCH₂CH₂)₂NH
Conversion
1 ppm = 4.30 mg/m3
IDLH
N.D.
See: IDLH INDEX
Exposure Limits
NIOSH REL
TWA 3 ppm (15 mg/m3)
OSHA PEL
none See Appendix G
Measurement Methods
NIOSH 3509;
OSHA PV2018
See: NMAM or OSHA Methods
Physical Description
Colorless crystals or a syrupy, white liquid (above 82°F) with a mild, ammonia-like odor.
Molecular Weight
105.2
Boiling Point
516°F (Decomposes)
Melting Point
82°F
Solubility
95%
Vapor Pressure
<0.01 mmHg
Ionization Potential
?
Specific Gravity
1.10
Flash Point
279°F
Upper Explosive Limit
9.8%
Lower Explosive Limit
1.6%
Class IIIB Combustible Liquid: Fl.P. at or above 200°F.
Combustible Solid
Incompatibilities & Reactivities
Oxidizers, strong acids, acid anhydrides, halides [Note: Reacts with CO2 in the air. Hygroscopic (i.e., absorbs moisture from the air). Corrosive to copper, zinc & galvanized iron.]
Exposure Routes
inhalation, ingestion, skin and/or eye contact
Symptoms
irritation eyes, skin, nose, throat; eye burns, corneal necrosis; skin burns; lacrimation (discharge of tears), cough, sneezing
Target Organs
Eyes, skin, respiratory system
Personal Protection/Sanitation
(See protection codes)
Skin:Prevent skin contact
Eyes:Prevent eye contact
Wash skin:When contaminated
Remove:When wet or contaminated
Change:Daily
Provide:Eyewash, Quick drench
First Aid
(See procedures)
Eye:Irrigate immediately
Skin:Water flush immediately
Breathing:Respiratory support
Swallow:Medical attention immediately
Respirator Recommendations

Not available.

Important additional information about respirator selection

See also
INTRODUCTION   ICSC CARD: 0618
Page last reviewed: October 30, 2019
Content source: National Institute for Occupational Safety and Health