Dimethylamine
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CAS
124-40-3
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(CH3)2NH
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RTECS
IP8750000
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Synonyms & Trade Names
Dimethylamine (anhydrous), N-Methylmethanamine
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DOT ID & Guide
1032 / 118 (anhydrous)
1160 / 132 (solution)
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Exposure
Limits
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NIOSH REL: TWA 10 ppm (18 mg/m3)
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OSHA PEL: TWA 10 ppm (18 mg/m3)
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IDLH
500 ppm
See: 124403
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Conversion
1 ppm = 1.85 mg/m3
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Physical Description
Colorless gas with an ammonia- or fish-like odor. [Note: A liquid below 44°F. Shipped as a liquefied compressed gas.]
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MW: 45.1
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BP: 44°F
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FRZ: -134°F
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Sol(140°F): 24%
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VP: 1.7 atm
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IP: 8.24 eV
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RGasD: 1.56
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Sp.Gr: 0.67 (Liquid at 44°F)
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Fl.P: NA (Gas) 20°F (Liquid)
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UEL: 14.4%
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LEL: 2.8%
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Flammable Gas
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Incompatibilities & Reactivities
Strong oxidizers, chlorine, mercury, acraldehyde, fluorides, maleic anhydride, aluminum, brass, copper, zinc
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Measurement Methods
NIOSH 2010; OSHA 34
See: NMAM or OSHA Methods |
Personal Protection & Sanitation (See protection)
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
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First Aid (See procedures)
Eye: Irrigate immediately (liquid)/Frostbite
Skin: Water flush immediately (liquid)/Frostbite
Breathing: Respiratory support
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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 concern/Any appropriate escape-type, self-contained breathing apparatus
Important additional information about respirator selection
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Exposure Routes
inhalation, skin and/or eye contact (liquid)
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Symptoms
Irritation nose, throat; sneezing, cough, dyspnea (breathing difficulty); pulmonary edema; conjunctivitis; dermatitis; liquid: frostbite
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Target Organs
Eyes, skin, respiratory system
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See also: INTRODUCTION
See ICSC CARD: 0260 |
