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| Nitric oxide | CAS 10102-43-9 | ||
| NO | RTECS QX0525000 | ||
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Synonyms & Trade Names Mononitrogen monoxide, Nitrogen monoxide |
DOT ID & Guide 1660 124 |
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Exposure Limits |
NIOSH REL: TWA 25 ppm (30 mg/m3) | ||
| OSHA PEL: TWA 25 ppm (30 mg/m3) | |||
| IDLH 100 ppm | Conversion 1 ppm = 1.23 mg/m3 | ||
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Physical Description Colorless gas. [Note: Shipped as a nonliquefied compressed gas.] |
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MW: 30.0 |
BP: -241°F |
FRZ: -263°F |
Sol: 5% |
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VP: 34.2 atm |
IP: 9.27 eV |
RGasD: 1.04 |
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Fl.P: NA |
UEL: NA |
LEL: NA |
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| Nonflammable Gas, but will accelerate the burning of combustible materials. | |||
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Incompatibilities & Reactivities Fluorine, combustible materials, ozone, NH3, chlorinated hydrocarbons, metals, carbon disulfide [Note: Reacts with water to form nitric acid. Rapidly converted in air to nitrogen dioxide.] |
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Measurement Methods NIOSH 6014; OSHA ID190 |
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Personal Protection & Sanitation Skin: No recommendation Eyes: No recommendation Wash skin: No recommendation Remove: No recommendation Change: No recommendation |
First Aid (See procedures) Breathing: Respiratory support |
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Respirator Recommendations
NIOSH/OSHA Up to 100 ppm: (APF = 25) Any supplied-air respirator operated in a continuous-flow mode*/(APF = 50) Any chemical cartridge respirator with a full facepiece and cartridge(s) 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 air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted canister providing protection against the compound of concern�/(APF = 10) Any supplied-air respirator*/(APF = 50) Any self-contained breathing apparatus 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 | |
| Symptoms Irritation eyes, wet skin, nose, throat; drowsiness, unconsciousness; methemoglobinemia | |
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Target Organs
Eyes, skin, respiratory system, blood, central nervous system |
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| See also: INTRODUCTION |