- Hydrogen peroxide is a clear and colorless liquid.
- It has a slightly pungent smell.
- It is a syrupy liquid in the unhydrous state.
- It is a diamagnetic.
- It is miscible with water, alcohol, and ether in all proportion.
- It is more highly associated via hydrogen bonding than water.
- Melting point is 273 K.
- Boiling point is 423 K.
- Molecular formula 2(HO).