Natriumoxide

Natriumoxide, or sodium oxide, is the inorganic compound with chemical formula Na2O. It is a white solid oxide of sodium that forms when metallic sodium is burned in air under controlled conditions or when sodium hydroxide is heated strongly to dehydrate it. It is a basic oxide and reacts readily with water and moisture.

In contact with water, sodium oxide hydrolyzes exothermically to form sodium hydroxide: Na2O + H2O → 2 NaOH. It also reacts with acids to give corresponding sodium salts, for example Na2O + 2 HCl → 2 NaCl + H2O. Reaction with carbon dioxide yields sodium carbonate: Na2O + CO2 → Na2CO3. Because it readily absorbs moisture and carbon dioxide from the air, it is typically handled as a reactive, caustic material in dry conditions.

Sodium oxide is not common as a naturally occurring mineral and is produced primarily for laboratory and industrial uses. It can be used as a flux in glass and ceramic processing to modify the silica network and lower melting temperatures, and as a drying agent for gases in certain laboratory setups. It is part of the broader family of alkali metal oxides and is often encountered in discussions of basic oxides and strong bases.

Safety and handling require care due to its caustic nature. It reacts vigorously with water and moisture, releasing heat and forming sodium hydroxide, which is corrosive to skin and eyes. It should be stored under dry, airtight conditions and handled with appropriate protective equipment to prevent contact with moisture.