Basic Anhydride
| Formula / Notation | MO + H₂O → M(OH)₂ (or MOH) |
|---|---|
| Also Known As | Metal oxide; basic oxide; metallic oxide; oxide base; ionic oxide; alkaline oxide |
What is Basic Anhydride?
A basic anhydride is a metal oxide that reacts with water to form a base (metal hydroxide) or reacts with an acid to form a salt. They are the anhydrous form of a metallic hydroxide. Most metal oxides (ionic oxides) are basic anhydrides; examples include CaO (calcium oxide/quicklime), Na₂O (sodium oxide), and MgO (magnesium oxide).
Formula & Notation
Other Names / Synonyms: Metal oxide; basic oxide; metallic oxide; oxide base; ionic oxide; alkaline oxide
Properties & Characteristics
Uses & Applications
Safety Information
Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.
Key Facts
Frequently Asked Questions
A basic anhydride is a metal oxide that reacts with water to form a base (metal hydroxide) or reacts with an acid to form a salt. They are the anhydrous form of a metallic hydroxide. Most metal oxides (ionic oxides) are basic anhydrides; examples include CaO (calcium oxide/quicklime), Na₂O (sodium oxide), and MgO (magnesium oxide).
Cement and lime production (CaO); metallurgy (CaO as flux in blast furnace); soil treatment (lime to neutralise acidity); manufacture of NaOH; refractory materials (MgO); glass production (Na₂O, CaO)
Many basic anhydrides react vigorously with water generating heat. Calcium oxide (quicklime) is highly exothermic on hydration and can cause burns. Metal oxide dust irritates the respiratory tract. Wear PPE and avoid inhalation of oxide dusts.
The formula or notation for Basic Anhydride is: MO + H₂O → M(OH)₂ (or MOH)