hydrogen peroxide

Hydrogen peroxide is a chemical compound with the formula H₂O₂. It has a molecular mass of 34.005 and a density of 1.39. The substance exhibits a melting point of -0.432 and a boiling point of 150.2. Its vapor pressure is 5, and it possesses an ionization energy of 10.54. The pKa value is 11.75, while the standard enthalpy of formation is -136.11 and the standard molar entropy is 109.6.

Physical properties include a kinematic viscosity of 1.245 and an electric dipole moment of 1.573. The compound has an xlogp of -0.9 and a topological polar surface area of 40.5. It contains two hydrogen bond donors and two hydrogen bond acceptors, with a charge of 0. Safety data indicates a time-weighted average exposure limit of 1.4 and an immediately dangerous to life or health level of 104.25.