How does nitrite work as a corrosion inhibitor?

Nitrite as an anodic inhibitor has a tendency to increase anodic polarization and thus increase corrosion potential to a noble direction and decrease the corrosion current. Since nitrite contains a strong oxidizing power, it oxidizes the surface and forms Fe2O3 [18].

What is the formula for the ion sodium nitrite?

Sodium nitrite

Chemical formula NaNO2
Molar mass 68.9953 g/mol

What is the name of NaNO3?

Sodium nitrate
Sodium nitrate/IUPAC ID
Sodium nitrate is the chemical compound with the formula NaNO3. This alkali metal nitrate salt is also known as Chile saltpeter (large deposits of which were historically mined in Chile) to distinguish it from ordinary saltpeter, potassium nitrate.

How does sodium nitrite prevent corrosion?

Sodium nitrite is an anodic inhibitor and as the name implies, anodic inhibitors interfere with the anodic process (metal dissolution), and reduce the corrosion rate by suppressing the anodic reaction, through the formation or maintenance of a passive film on the metal surface.

What is the best range of pH for efficient result of nitrite treated water system?

Nitrite concentra-tions in the range of 600-1200 ppm as NO2- will suitably inhibit iron and steel corrosion when the pH is maintained above 7.0. Systems containing steel and copper couples require treatment levels in the 5000-7000 ppm range.

Is sodium nitrite lethal?

Sodium nitrite is a powerful oxidizing agent that causes hypotension and limits oxygen transport and delivery in the body through the formation of methemoglobin. Clinical manifestations can include cyanosis, hypoxia, altered consciousness, dysrhythmias, and death.

Why is sodium nitrite bad?

Sodium nitrate, a preservative that’s used in some processed meats, such as bacon, jerky and luncheon meats, could increase your heart disease risk. It’s thought that sodium nitrate may damage your blood vessels, making your arteries more likely to harden and narrow, leading to heart disease.

How much sodium nitrite is lethal?

Sodium nitrite is a toxic substance, and at sufficient dose levels, is toxic in humans. Fassett (1973) and Archer (1982) referenced the widely used clinical toxicology book of Gleason et al (1963) and estimated the lethal dose in humans is 1 g of sodium nitrite in adults (about 14 mg/kg).

Is salt a nitrate?

Beets, celery and sea salt may all contain nitrate naturally.

Is sodium nitrate acidic or basic?

NaNO3 is a neutral salt as it is made from the neutralization reaction of the strong acid(HNO3) with a strong base(NaOH)….Is Sodium nitrate (NaNO3) an acid or base or neutral?

Name of Molecule Sodium nitrate
pH value 7

Which type of antidote is sodium nitrite?

Sodium nitrite and sodium thiosulfate is a combination medicine that is used as an antidote to cyanide poisoning. Sodium nitrite and sodium thiosulfate works by helping cells in the body convert cyanide to a form that can be removed from the body through urination.

What is the pH value of sodium nitrite?

1,000 Mg of NaNO3 per ml. The initial pH of their medium was 6.6 to 6.8. A produced by S.

What is the NaNO2 code for sodium nitrite?

Sodium nitrite | NaNO2 or NO2.Na or NNaO2 | CID 23668193 – structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety/hazards/toxicity information, supplier lists, and more.

Are there any adverse effects of sodium nitrite?

Studies in the 1990s indicated some adverse effects of sodium nitrite, for instance the potential to cause childhood leukemia and brain cancers.

What kind of salt is an inorganic nitrate?

Sodium nitrate is the inorganic nitrate salt of sodium. It has a role as a fertilizer. It is an inorganic sodium salt and an inorganic nitrate salt.

What kind of solution is 40% sodium nitrite?

40% Sodium Nitrite Solution S 25–39% Sodium Nitrite Solution S approx. Auxiliaries for the chemical and pharmaceutical industries, the textile industry, hardening technology and many other industries. Preservatives in certain applications.