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Dimethylamine																				Related Pages
Synonyms & Trade Names
			Dimethylamine (anhydrous), N-Methylmethanamine
CAS No.
			124-40-3
	RTECS No.
			IP8750000
	DOT ID & Guide
			1032 118(anhydrous)1160 132(solution)

Formula(CH3)2NH
	Conversion
			1 ppm = 1.85 mg/m3
	IDLH
			500 ppmSee: 124403

Exposure Limits
			NIOSH RELTWA 10 ppm (18 mg/m3)
					OSHA PEL TWA 10 ppm (18 mg/m3)
	Measurement Methods
			**NIOSH** 2010;**OSHA** 34
					
					See: NMAM or OSHA Methods
										
Physical Description
			Colorless gas with an ammonia- or fish-like odor.
					[Note: A liquid below 44°F. Shipped as a liquefied compressed gas.]													
										
Molecular Weight45.1	
	Boiling Point44°F
	Freezing Point-134°F
	Solubility(140°F): 24%
	Vapor Pressure1.7 atm
	Ionization Potential8.24 eV											
Specific Gravity0.67 (Liquid at 44°F)	
	Flash PointNA (Gas) 20°F (Liquid)
	Upper Explosive Limit14.4%
	Lower Explosive Limit2.8%
	Relative Gas Density1.56
Flammable Gas
Incompatibilities & Reactivities
			Strong oxidizers, chlorine, mercury, acraldehyde, fluorides, maleic anhydride, aluminum, brass, copper, zinc
Exposure Routes
			inhalation, skin and/or eye contact (liquid)
Symptoms
			irritation nose, throat; sneezing, cough, dyspnea (breathing difficulty); pulmonary edema; conjunctivitis; dermatitis; liquid: frostbite
Target Organs
			Eyes, skin, respiratory system
										
Personal Protection/Sanitation
			(See protection codes) **Skin:**Prevent skin contact (liquid)/Frostbite
							**Eyes:**Prevent eye contact (liquid)/Frostbite
							**Wash skin:**When contaminated (liquid)
							**Remove:**When wet (flammable)
							**Change:**No recommendation
							**Provide:**Eyewash (liquid), Quick drench (liquid), Frostbite wash
	First Aid
			(See procedures)**Eye:**Irrigate immediately (liquid)/Frostbite
							**Skin:**Water flush immediately (liquid)/Frostbite
							**Breathing:**Respiratory support
Respirator Recommendations
			**NIOSH/OSHA****Up to 250 ppm**: (APF = 25) Any supplied-air respirator operated in a continuous-flow mode£**Up to 500 ppm**: (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 concernAny appropriate escape-type, self-contained breathing apparatus
				Important additional information about respirator selection
See also
			INTRODUCTION
					  ICSC CARD: 1485

			
							

			Page last reviewed:  October 30, 2019						Content
							source: 	National Institute for Occupational Safety and Health NIOSH Pocket Guide to Chemical Hazards
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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
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