Solutions Gas Detectors Training Rental Repair Resources About Us Blog Talk to an Expert Home > Gas Detectors > By Gas > Nitric Oxide NITRIC OXIDE GAS DETECTORS (NO DETECTORS) Nitric oxide (NO) is a nonflammable, extremely toxic, oxidizing gas with a sweet, sharp odor. Nitric oxide may be released by the action of nitric acid on metals, such as in metal etching and pickling, and is a by-product of combustion of substances in fossil fuel plants. It can be produced by the oxidation of nitrogenous materials, used as an intermediate in the synthesis of nitric acid, as a decomposition agent in certain gaseous products, and in semiconductor manufacturing. Nitric oxide is converted spontaneously in air to nitrogen dioxide; therefore some NO2 is likely to be present when nitric oxide is detected in the air. With the ability to accurately detect up to 6 gases, Industrial Scientific’s MX6 iBrid® portable multi-gas detector is the ideal instrument for nitric oxide and nitrogen dioxide gas detection. Talk to an Expert RELATED GAS DETECTORS - NITRIC OXIDE Radius BZ1 MX6 iBrid NITRIC OXIDE - NO Hazard: Flammable Not explosive, but will accelerate burning Classification: Health Extremely toxic Synonyms: Mononitrogen monoxide, Nitrogen monoxide Exposure limits: (OSHA) PEL\TWA: 25 ppm (ACGIH) STEL: N/A (OSHA) IDLH: 100 ppm / 30 min. Industries: Metal etching, blasting, welding, diesel combustion Nitric oxide (NO) is colorless, poisonous gas. NO fumes may be encountered whenever nitric acid comes in contact with organic material such as wood, sawdust, or refuse. It can also result from heating nitric acid and when organic nitro compounds are burned, for example, dynamite. The action of nitric acid upon metals, as in metal etching and pickling, also liberates this dangerous compound. In high-temperature welding (oxyacetylene or electric torch), the nitrogen and oxygen in the air combine to form oxides of nitrogen. Nitric oxide is somewhat soluble in water and when inhaled will react to form nitric acid. This causes slight irritation to mucous membranes of the upper respiratory tract. Continued exposure to high concentrations of nitric oxide can cause pulmonary edema and death. Effects of Various NO Levels Nitric Oxide Level in PPM Resulting Conditions on Humans 25 Minor irritation of the eyes and respiratory tract. 0-50 Low water solubility, therefore, only slight irritation of the mucous membranes is noted even though the TWA has been exceeded. 60-150 Irritation is more intense, coughing and burning of the throat is evident. Symptoms will clear if the victim is removed relatively quickly to a clean air environment. 200-700 May be fatal even after short exposures. NOTE: Continued exposure to low concentrations of fumes, insufficient to cause pulmonary edema, are said to result in chronic irritation of the respiratory tract, headache, cough, loss of appetite, dyspepsia, corrosion of the teeth and gradual loss of strength. Source: Dangerous Properties of Industrial Materials (Sixth Edition) by N. Irving Sax TAKING THE GUESSWORK OUT OF GAS DETECTION When it comes to lifesaving gas detectors, you can’t afford to guess. Gas detectors today offer features that provide clear information on the instrument status and sensors, tell the user how to react when an alarm goes off, and make it easy to interpret the readings. This white paper covers technology that makes gas detection easy for all users. 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