Let’s know about Sodium Oxide Formula. Sodium oxide is an inorganic compound of the formula Na 2 O. Like all alkali metal oxides, it has a crystalline structure of antifluorite (similar to fluorite, CaF2, but with cations and inverted anions), which corresponds to cubic centered faces. (Sodium: Disodium Oxide, 1993-2016).
It can be said that sodium oxide is the anhydride of sodium hydroxide, as it reacts with water to form two moles of this compound.
Na 2 O + H 2 O → 2NaOH
Typically, the name KNAO can be found in reference to sodium oxide or potassium oxide. This is because the two oxides have similar properties in terms of color and velocity of expansion and contraction.
Often insoluble sources of sodium oxide include traces of potassium oxide, for example feldspar (Figure 2), which are the main source of sodium in some enamels (Britt, 2007).
physical and chemical properties
Sodium oxide is a white crystalline solid (figure 3). It has a molecular weight of 61.98 g / mol, a density of 2.27 g / ml and a melting point of 1275% C.
The compound has a boiling point of 1950 °C, where it begins to decompose to sodium and sodium metal peroxide, however, an interesting property is that sodium oxide sublimates at 1100 °C (National Center for Biotechnology Information, SF). gets started. ,
Reacts violently with water and alcohol to form sodium hydroxide. Sodium oxide, Na 2 or, it reversibly absorbs hydrogen (H 2 ), to form sodium hydride (NaH) and sodium hydroxide (NaOH), which has the potential to find its application for the reversible storage of hydrogen. .
response and threats
Sodium oxide is a stable non-flammable compound, but can react violently with acids and water. It can also increase the combustion of other substances. It is classified as corrosive and can burn the skin and eyes (Royal Society of Chemistry, 2015).
The solution in water is a strong base, as it reacts violently with it being acidic. When reacting violently with water, sodium hydroxide is produced, which attacks many metals in the presence of water.
The substance is also corrosive to the respiratory tract and ingested. Aerosol inhalation can cause pulmonary edema (National Institute for Occupational Safety and Health, 2014).
In case of inhalation, the affected person should be moved to a cool place. If the victim does not breathe, artificial respiration should be administered. Then go to or see a doctor as soon as possible.
In case of skin contact, contaminated clothing and shoes should be immediately removed and washed with plenty of water.
In case of contact with eyes, rinse with plenty of water for at least 15 minutes and consult a doctor. In case of ingestion, do not think of causing vomiting, but rinse your mouth with water and consult a doctor.
The most significant symptoms and effects may be: convulsions, swelling and inflammation of the larynx and bronchi, pneumonitis, pulmonary edema, burning, cough, wheezing, laryngitis and difficulty breathing (sodium carbide (Na2O)) (Cas 1313) 59-3 ) MSDS, 2010-2017).
Symptoms of pulmonary edema often do not appear after a few hours and are aggravated by physical exertion. Rest and medical observation are therefore essential.
Sodium oxide should be stored in a dry place and separated from strong acids. Since premises with fire react violently with water, water-based extinguishers or sprinklers should not be used. It is recommended to use dry powder or sand.
Applications
The main use of sodium oxide is in the manufacture of glass. It is used in ceramics and glasses, although not in its raw form. Sodium oxide generally accounts for about 15% of the chemical composition of glass.
This reduces the temperature at which silicon dioxide melts (glass composition at 70%), resulting in it being cheaper and more efficient to produce glass, as it requires less energy expenditure on the part of the manufacturer. require (George Sumner, SF) ).
Sodium-lime glass is the most common form of glass produced, containing about 70% silica (silicon dioxide), 15% soda (sodium oxide) and 9% lime (calcium oxide), with much smaller amounts of other compounds.
The sodium oxide acts as a flux to lower the temperature at which the silica melts, and the lime acts as a stabilizer for the silica. Sodium-lime glass is inexpensive, chemically stable, reasonably hard, and extremely useful, as it is capable of being softened several times when necessary.
These properties make it suitable for the manufacture of a wide range of glass products, including light bulbs, glasses, bottles and art objects.
On the other hand, sodium oxide and silica consist of water crystals, also called sodium silicate or water glass, which form a solid solid with the very useful property of being soluble in water.
Water glass is sold as a solid lump or powder, or as a clear, syrupy liquid. It is used as a convenient source of sodium for many industrial products such as: manufacturers of laundry detergents, as a binder and adhesive, as a flocculant in water treatment plants, and many others. In other applications (Enciclopaedia briticaica, 2017).
Oxide compounds do not produce electricity. However, some structured oxides of perovskite are electronic conductors for application in the cathodes of solid oxide fuel cells and oxygen generation systems (American Elements, 1998–2017).
