Dimethylamine |
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 ppm
See: 124403 |
Exposure Limits NIOSH REL: TWA 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.] |
MW: 45.1 |
BP: 44°F |
FRZ: -134°F |
Sol(140°F): 24% |
VP: 1.7 atm |
IP: 8.24 eV |
Sp.Gr: 0.67 (Liquid at 44°F) |
Fl.P: NA (Gas) 20°F (Liquid) |
UEL: 14.4% |
LEL: 2.8% |
RGasD: 1.56 |
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| 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 |
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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
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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 |
| See also: INTRODUCTION See ICSC CARD: 1485
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