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Trimethylamine																				Related Pages
Synonyms & Trade Names
			N,N-Dimethylmethanamine, TMA [Trimethylamine]
					[Note: May be used in an aqueous solution (typically 25%, 30%, or 40% TMA.]
CAS No.
			75-50-3
	RTECS No.
			PA0350000
	DOT ID & Guide
			1083 118(anhydrous)1297 132(aqueous solution)

Formula(CH3)3N
	Conversion
			1 ppm = 2.42 mg/m3
	IDLH
			N.D.See: IDLH INDEX

Exposure Limits
			NIOSH RELTWA 10 ppm (24 mg/m3) ST 15 ppm (36 mg/m3)
					OSHA PEL none See Appendix G
	Measurement Methods
			**OSHA** PV2060
					
					See: NMAM or OSHA Methods
										
Physical Description
			Colorless gas with a fishy, amine odor.
					[Note: A liquid below 37°F. Shipped as a liquefied compressed gas.]													
										
Molecular Weight59.1	
	Boiling Point37°F
	Freezing Point-179°F
	Solubility(86°F): 48%
	Vapor Pressure(70°F): 1454 mmHg
	Ionization Potential7.82 eV											
Flash PointNA (Gas) 20°F (Liquid)
	Upper Explosive Limit11.6%
	Lower Explosive Limit2.0%
	Relative Gas Density2.09
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 contact
Symptoms
			irritation eyes, skin, nose, throat, respiratory system; cough, dyspnea (breathing difficulty), delayed pulmonary edema; blurred vision, corneal necrosis; skin burns; liquid: frostbite
Target Organs
			Eyes, skin, respiratory system
										
Personal 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.
				Important additional information about respirator selection
See also
			INTRODUCTION
					  ICSC CARD: 0206

			
							

			Page last reviewed:  October 30, 2019						Content
							source: 	National Institute for Occupational Safety and Health NIOSH Pocket Guide to Chemical Hazards
Introduction
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Appendices
A – NIOSH Potential Occupational Carcinogens
B – Thirteen OSHA-Regulated Carcinogens
C – Supplementary Exposure Limits
D – Substances with No Established RELs
E – OSHA Respirator Requirements for Selected Chemicals
F – Miscellaneous Notes
G – 1989 Air Contaminants Update Project: Exposure Limits NOT in Effect
Type C & CE – Definitions for Type C and Type CE Respirators
Personal Protection and Sanitation Codes
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