Trimethylamine
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CAS
75-50-3
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(CH3)3N
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RTECS
PA0350000
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Synonyms & Trade Names
N,N-Dimethylmethanamine; TMA [Note: May be used in an aqueous solution (typically 25%, 30%, or 40% TMA.]
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DOT ID & Guide
1083 / 118 (anhydrous)
1297 / 132 (aqueous solution)
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Exposure
Limits
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NIOSH REL: TWA 10 ppm (24 mg/m3) ST 15 ppm (36 mg/m3)
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OSHA PEL†: none
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IDLH
N.D.
See: IDLH INDEX
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Conversion
1 ppm = 2.42 mg/m3
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Physical Description
Colorless gas with a fishy, amine odor. [Note: A liquid below 37°F. Shipped as a liquefied compressed gas.]
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MW: 59.1
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BP: 37°F
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FRZ: -179°F
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Sol(86°F): 48%
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VP(70°F): 1454 mmHg
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IP: 7.82 eV
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RGasD: 2.09
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Fl.P: NA (Gas) 20°F (Liquid)
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UEL: 11.6%
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LEL: 2.0%
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Flammable Gas
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Incompatibilities & Reactivities
Strong oxidizers (including bromine), ethylene oxide, nitrosating agents (e.g., sodium nitrite), mercury, strong acids [Note: Corrosive to many metals (e.g., zinc, brass, aluminum, copper).]
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Measurement Methods
OSHA PV2060
See: NMAM or OSHA Methods |
Personal Protection & Sanitation (See protection)
Skin: Prevent skin contact (liquid/solution)/Frostbite
Eyes: Prevent eye contact (liquid/solution)/Frostbite
Wash skin: When contaminated (solution)
Remove: When wet (flammable)
Change: No recommendation
Provide: Eyewash (liquid/solution), Quick drench (liquid/solution), Frostbite wash
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First Aid (See procedures)
Eye: Irrigate immediately (liquid/solution)/Frostbite
Skin: Water flush immediately (liquid/solution)/Frostbite
Breathing: Respiratory support
Swallow: Medical attention immediately (solution)
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Respirator Recommendations
Not available.
Important additional information about respirator selection
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Exposure Routes
inhalation, ingestion (solution), skin and/or eye contact
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Symptoms
Irritation eyes, skin, nose, throat, respiratory system; cough, dyspnea (breathing difficulty), delayed pulmonary edema; blurred vision, corneal necrosis; skin burns; liquid: frostbite
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Target Organs
Eyes, skin, respiratory system
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See also: INTRODUCTION
See ICSC CARD: 0206 |
