Trimethylamine
Synonyms & Trade Names
N,N-Dimethylmethanamine, TMA [Trimethylamine] [Note: May be used in an aqueous solution (typically 25%, 30%, or 40% TMA.]Physical Description
Colorless gas with a fishy, amine odor. [Note: A liquid below 37°F. Shipped as a liquefied compressed gas.]Molecular Weight
59.1Boiling Point
37°FFreezing Point
-179°FSolubility
(86°F): 48%Vapor Pressure
(70°F): 1454 mmHgIonization Potential
7.82 eVFlash Point
NA (Gas) 20°F (Liquid)Upper Exposive Limit
11.6%Lower Explosive Limit
2.0%Relative Gas Density
2.09
Flammable Gas
Incompatibilities & Reactivities
Strong oxidizers (including bromine), ethylene oxide, nitrosating agents (e.g., sodium nitrite), mercury, strong acids [Note: Corrosive to many metals (e.g., zinc, brass, aluminum, copper).]Exposure Routes
inhalation, ingestion (solution), skin and/or eye contactSymptoms
irritation eyes, skin, nose, throat, respiratory system; cough, dyspnea (breathing difficulty), delayed pulmonary edema; blurred vision, corneal necrosis; skin burns; liquid: frostbiteTarget Organs
Eyes, skin, respiratory systemPersonal Protection/Sanitation
(See protection codes)Skin:Prevent skin contact (liquid/solution)/Frostbite
Eyes:Prevent eye contact (liquid/solution)/Frostbite
Wash skin:When contaminated (solution)
Remove:When wet (flammable)
Change:No recommendation
Provide:Eyewash (liquid/solution), Quick drench (liquid/solution), Frostbite wash
First Aid
(See procedures)Eye:Irrigate immediately (liquid/solution)/Frostbite
Skin:Water flush immediately (liquid/solution)/Frostbite
Breathing:Respiratory support
Swallow:Medical attention immediately (solution)
Respirator Recommendations
Not available.
- Page last reviewed:April 11, 2016
- Page last updated:April 11, 2016
- Content source:
- National Institute for Occupational Safety and Health (NIOSH) Education and Information Division