Nitric oxide
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CAS
10102-43-9
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NO
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RTECS
QX0525000
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Synonyms & Trade Names
Mononitrogen monoxide, Nitrogen monoxide
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DOT ID & Guide
1660 / 124
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Exposure
Limits
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NIOSH REL: TWA 25 ppm (30 mg/m3)
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OSHA PEL: TWA 25 ppm (30 mg/m3)
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IDLH
100 ppm
See: 10102439
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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
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BP: -241°F
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FRZ: -263°F
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Sol: 5%
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VP: 34.2 atm
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IP: 9.27 eV
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RGasD: 1.04
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Fl.P: NA
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UEL: NA
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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
See: NMAM or OSHA Methods |
Personal Protection & Sanitation (See protection)
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
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Exposure Routes
inhalation
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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 See ICSC CARD: 1311
See MEDICAL TESTS: 0159
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