Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Nitrogen oxide corrosion

Irritant gases (eg, chlorine, ammonia, sulfur dioxide, nitrogen oxides) Corrosive effect on upper and lower airways Cough, stridor, wheezing, pneumonia... [Pg.1411]

In the outdoor environment, the high concentrations of sulfur and nitrogen oxides from automotive and industrial emissions result in a corrosion having both soluble and insoluble corrosion products and no pacification. The results are clearly visible on outdoor bronze sculpture (see Airpollution Exhaust CONTROL, automotive Exhaust conthol, industrial). [Pg.425]

In the spht- or dual-pressure process, low to medium pressure gases (ca 0.3—0.6 MPa) containing nitrogen oxides are compressed to ca 1.1—1.5 MPa for efficient absorption in water to make nitric acid. Stainless steel is used for constmction in this corrosive environment and, because of the potential for... [Pg.41]

Gaseous nitrogen dioxide is a brown, paramagnetic, non-flammable, toxic, strongly oxidizing, corrosive substance shipped in approved, low-pressure steel cylinders. It is prepared in situ by heating lead nitrate ... [Pg.298]

Volatile decomposition products may include HC1, HBr, HF, and nitrogen oxides (NO ) or sulfur oxides (SO ). Decomposition vapors from nitrogen vesicants may form explosive mixtures in air. In addition, a corrosive and toxic residue may remain. HL (C03-A010) will also produce toxic arsenic oxides. [Pg.149]

During this first distillation, nitrogen oxides are evolved in appreciable amounts. It is suggested this operation be done behind a shield in a well-ventilated area. A trap cooled with a mixture of solid carbon dioxide and acetone or with liquid air should be inserted between the column and the vacuum pump. Pumps used in this distillation did not appear to suffer corrosion damage. A dry oil was used and changed after each distillation. [Pg.78]

K. Tantalum. (Tantalum mp 2,996°C), is an extremely chemically resistant metal which is hard but ductile. Because of its high melting point and good corrosion resistance, tantalum is frequently used as a container for high-temperature melts. It is attacked by HF and other fluorides, as well as sulfur trioxide and nitrogen oxides. [Pg.146]

There is a potential health hazard when handling, and operating with, nitric acid. Nitric acid is a corrosive liquid that penetrates and destroys the skin and internal tissues. Contact can cause severe burns. The acid is a potential hazard, the various nitrogen oxides present as product intermediates in the process are also toxic. An assessment of the health risk must be fundamental to the design of any process. Further consideration and recommendations for the operating health risk and environmental impact of the plant are presented in Section 5.4. [Pg.7]

Inorganic gases Oxides of nitrogen Oxides of sulfur Other inorganics Nitrogen dioxide, nitric oxide Sulfuric acid, sulfur dioxide Carbon monoxide, chlorine, ozone, hydrogen sulfide, hydrogen fluoride, ammonia One of the principal pollutants is sulfur dioxide, which is a corrosive acid gas that combines with water vapor in the atmosphere to produce acid rain. [Pg.11]

Irritant dermatitis does not involve an immune response and is typically caused by contact with corrosive substances that exhibit extremes of pH, oxidizing capability, dehydrating action, or tendency to dissolve skin lipids. In extreme cases of exposure, skin cells are destroyed and a permanent scar results. This condition is known as a chemical burn. Exposure to concentrated sulfuric acid, which exhibits extreme acidity, or to concentrated nitric acid, which denatures skin protein, can cause bad chemical bums. The strong oxidant action of 30% hydrogen peroxide likewise causes a chemical bum. Other chemicals causing chemical bums include ammonia, quicklime (CaO), chlorine, ethylene oxide, hydrogen halides, methyl bromide, nitrogen oxides, elemental white phosporous, phenol, alkali metal hydroxides (NaOH, KOH), and toluene diisocyanate. [Pg.204]

This mode of failure is possible in all the copper alloys. The principal environment involved is ammonia. The evidence also exists for other media such as citrates, tartrates, nitrites, sulfur dioxide, carbonates, nitrogen oxides and phosphates to be conducive to a stress-corrosion cracking mode of failure of copper alloys. [Pg.242]

Hazards Use maximum ventilation when handling 99% nitric acid, which evolves excessive fumes of nitrogen oxides. These fumes are very toxic and corrosive. Use great care. Kerosene and 95% ethanol are flammable, extinguish all flames before using. [Pg.93]


See other pages where Nitrogen oxide corrosion is mentioned: [Pg.611]    [Pg.41]    [Pg.498]    [Pg.95]    [Pg.358]    [Pg.80]    [Pg.146]    [Pg.486]    [Pg.149]    [Pg.902]    [Pg.137]    [Pg.175]    [Pg.363]    [Pg.10]    [Pg.1790]    [Pg.349]    [Pg.361]    [Pg.441]    [Pg.251]    [Pg.241]    [Pg.342]    [Pg.397]    [Pg.200]    [Pg.95]    [Pg.428]    [Pg.179]    [Pg.1873]    [Pg.2556]    [Pg.60]    [Pg.1790]    [Pg.73]    [Pg.198]    [Pg.61]    [Pg.237]    [Pg.57]    [Pg.65]    [Pg.84]   
See also in sourсe #XX -- [ Pg.297 , Pg.298 , Pg.299 ]




SEARCH



Oxides Corrosion

© 2024 chempedia.info