Nitric oxide |
Synonyms & Trade Names Mononitrogen monoxide, Nitrogen monoxide |
CAS No. 10102-43-9 |
RTECS No. QX0525000 |
DOT ID & Guide 1660 124 |
FormulaNO |
Conversion 1 ppm = 1.23 mg/m3 |
IDLH 100 ppm
See: 10102439 |
Exposure Limits NIOSH REL: TWA 25 ppm (30 mg/m3)
OSHA PEL: TWA 25 ppm (30 mg/m3) |
Measurement Methods
NIOSH 6014;
OSHA ID190
See: NMAM or OSHA Methods |
Physical Description Colorless gas. [Note: Shipped as a nonliquefied compressed gas.] |
MW: 30.0 |
BP: -241°F |
FRZ: -263°F |
Sol: 5% |
VP: 34.2 atm |
IP: 9.27 eV |
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Fl.P: NA |
UEL: NA |
LEL: NA |
RGasD: 1.04 |
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| Nonflammable Gas, but will accelerate the burning of combustible materials. |
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.] |
Exposure Routes inhalation |
Symptoms irritation eyes, wet skin, nose, throat; drowsiness, unconsciousness; methemoglobinemia |
Target Organs Eyes, skin, respiratory system, blood, central nervous system |
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Personal Protection/Sanitation (See protection codes)
Skin: No recommendation
Eyes: No recommendation
Wash skin: No recommendation
Remove: No recommendation
Change: No recommendation
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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
Important additional information about respirator selection |
| See also: INTRODUCTION See ICSC CARD: 1311 See MEDICAL TESTS: 0159 |
