The Sodium oxide, with CAS registry number 1313-59-3, belongs to the following product categories: (1)Inorganics; (2)Catalysis and Inorganic Chemistry; (3)Chemical Synthesis. It has the systematic name of disodium oxygen(-2) anion. This chemical is a kind of white to grey granules or powder. It is used in ceramics and glasses, though not in a raw form. Treatment with water affords sodium hydroxide. What's more, its EINECS is 215-208-9.

Physical properties of Sodium oxide: (1)#H bond acceptors: 1; (2)#H bond donors: 0; (3)#Freely Rotating Bonds: 0; (4)Polar Surface Area: 0 Å².

Preparation: this chemical  is produced by the reaction of sodium with sodium hydroxide, sodium peroxide, or sodium nitrite:

2 NaOH + 2 Na → 2 Na₂O + H2
Na₂O2 + 2 Na → 2 Na₂O
2 NaNO₂ + 6 Na → 4 Na₂O + N2

When you are using this chemical, please be cautious about it as the following:
The Sodium oxide reacts violently with water. It may cause severe burns. When contacts with combustible material, it may cause fire. When use it, wear suitable protective clothing, gloves and eye/face protection. If contact with eyes, rinse immediately with plenty of water and seek medical advice. After using it, take off immediately all contaminated clothing. In case of fire use ... (there follows the type of fire-fighting equipment to be used.) In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) You should keep its container dry.

You can still convert the following datas into molecular structure:
(1)SMILES: [Na+].[Na+].[O-2]
(2)InChI: InChI=1/2Na.O/q2*+1;-2
(3)InChIKey: KKCBUQHMOMHUOY-UHFFFAOYAA
(4)Std. InChI: InChI=1S/2Na.O/q2*+1;-2
(5)Std. InChIKey: KKCBUQHMOMHUOY-UHFFFAOYSA-N