Methylamine |
Synonyms & Trade Names Aminomethane, Methylamine (anhydrous), Methylamine (aqueous), Monomethylamine |
CAS No. 74-89-5 |
RTECS No. PF6300000 |
DOT ID & Guide 1061 118 (anhydrous)
1235 132 (aqueous) |
FormulaCH3NH2 |
Conversion 1 ppm = 1.27 mg/m3 |
IDLH 100 ppm
See: 74895 |
Exposure Limits NIOSH REL: TWA 10 ppm (12 mg/m3)
OSHA PEL: TWA 10 ppm (12 mg/m3) |
Measurement Methods
OSHA 40
See: NMAM or OSHA Methods |
Physical Description Colorless gas with a fish- or ammonia-like odor. [Note: A liquid below 21°F. Shipped as a liquefied compressed gas.] |
MW: 31.1 |
BP: 21°F |
FRZ: -136°F |
Sol: Soluble |
VP: 3.0 atm |
IP: 8.97 eV |
Sp.Gr: 0.70 (Liquid at 13°F) |
Fl.P: NA (Gas) 14°F (Liquid) |
UEL: 20.7% |
LEL: 4.9% |
RGasD: 1.08 |
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| Flammable Gas |
Incompatibilities & Reactivities Mercury, strong oxidizers, nitromethane [Note: Corrosive to copper & zinc alloys, aluminum & galvanized surfaces.] |
Exposure Routes inhalation, skin absorption (solution), ingestion (solution), skin and/or eye contact (solution/liquid) |
Symptoms irritation eyes, skin, respiratory system; cough; skin, mucous membrane burns; dermatitis; conjunctivitis; liquid: frostbite |
Target Organs Eyes, skin, respiratory system |
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Personal Protection/Sanitation (See protection codes)
Skin: Prevent skin contact (solution)/Frostbite
Eyes: Prevent eye contact (solution)/Frostbite
Wash skin: When contaminated (solution)
Remove: When wet (flammable)
Change: No recommendation
Provide: Frostbite wash |
First Aid (See procedures)
Eye: Irrigate immediately (solution)/Frostbite
Skin: Water flush immediately (solution)/Frostbite
Breathing: Respiratory support
Swallow: Medical attention immediately (solution) |
Respirator Recommendations NIOSH/OSHA Up to 100 ppm:
(APF = 50) Any chemical cartridge respirator with a full facepiece and cartridge(s) providing protection against the compound of concern
(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
(APF = 25) Any powered, air-purifying respirator with cartridge(s) providing protection against the compound of concern£
(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: 1483
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