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| Dimethylamine | CAS 124-40-3 | ||
| (CH3)2NH | RTECS IP8750000 | ||
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Synonyms & Trade Names Dimethylamine (anhydrous), N-Methylmethanamine |
DOT ID & Guide 1032 118 (anhydrous) 1160 129 (solution) |
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Exposure Limits |
NIOSH REL: TWA 10 ppm (18 mg/m3) | ||
| OSHA PEL: TWA 10 ppm (18 mg/m3) | |||
| IDLH 500 ppm See: 124403 | 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 |
BP: 44°F |
FRZ: -134°F |
Sol(140°F): 24% |
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VP: 1.7 atm |
IP: 8.24 eV |
RGasD: 1.56 |
Sp.Gr: 0.67 (Liquid at 44°F) |
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Fl.P: NA (Gas) 20°F (Liquid) |
UEL: 14.4% |
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 |
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Personal Protection & Sanitation 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 |
First Aid (See procedures) Eye: Irrigate immediately (liquid)/Frostbite Skin: Water flush immediately (liquid)/Frostbite Breathing: Respiratory support |
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Important additional information about respirator selection 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 |
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| Exposure Routes inhalation, skin and/or eye contact (liquid) | |
| 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 |