Nitric oxide

Synonyms & Trade Names

Mononitrogen monoxide, Nitrogen monoxide

Physical Description

Colorless gas. [Note: Shipped as a nonliquefied compressed gas.]

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.]

Symptoms

irritation eyes, wet skin, nose, throat; drowsiness, unconsciousness; methemoglobinemia

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