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| Acetonitrile | CAS 75-05-8 | ||
| CH3CN | RTECS AL7700000 | ||
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Synonyms & Trade Names Cyanomethane, Ethyl nitrile, Methyl cyanide [Note: Forms cyanide in the body.] |
DOT ID & Guide 1648 131 |
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Exposure Limits |
NIOSH REL: TWA 20 ppm (34 mg/m3) | ||
| OSHA PEL�: TWA 40 ppm (70 mg/m3) | |||
| IDLH 500 ppm | Conversion 1 ppm = 1.68 mg/m3 | ||
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Physical Description Colorless liquid with an aromatic odor. |
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MW: 41.1 |
BP: 179°F |
FRZ: -49°F |
Sol: Miscible |
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VP: 73 mmHg |
IP: 12.20 eV |
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Sp.Gr: 0.78 |
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Fl.P(oc): 42°F |
UEL: 16.0% |
LEL: 3.0% |
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| Class IB Flammable Liquid: Fl.P. below 73�F and BP at or above 100�F. | |||
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Incompatibilities & Reactivities Strong oxidizers |
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Measurement Methods NIOSH 1606 |
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Personal Protection & Sanitation Skin: Prevent skin contact Eyes: Prevent eye contact Wash skin: When contaminated Remove: When wet (flammable) Change: No recommendation Provide: Quick drench |
First Aid (See procedures) Eye: Irrigate immediately Skin: Water flush immediately Breathing: Respiratory support Swallow: Medical attention immediately |
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Respirator Recommendations
NIOSH Up to 200 ppm: (APF = 10) Any chemical cartridge respirator with organic vapor cartridge(s)/(APF = 10) Any supplied-air respirator Up to 500 ppm: (APF = 25) Any supplied-air respirator operated in a continuous-flow mode/(APF = 25) Any powered, air-purifying respirator with organic vapor cartridge(s)/(APF = 50) Any chemical cartridge respirator with a full facepiece and organic vapor cartridge(s)/(APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted organic vapor canister/(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 organic vapor canister/Any appropriate escape-type, self-contained breathing apparatus |
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| Exposure Routes inhalation, skin absorption, ingestion, skin and/or eye contact | |
| Symptoms Irritation nose, throat; asphyxia; nausea, vomiting; chest pain; lassitude (weakness, exhaustion); stupor, convulsions; in animals: liver, kidney damage | |
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Target Organs
respiratory system, cardiovascular system, central nervous system, liver, kidneys |
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| See also: INTRODUCTION |