Aqueous solution suitable for the chemical sterilization of packaging materials, comprising hydrogen peroxide and at least one foodstuff-compatible stabilizer. This solution has a maximum phosphorous content expressed as PO 4 3- of 10 mg/kg, and presents a dry residue at 105 °C of at most 10 mg/kg. The same solution can be used as dip bath liquid in dip bath aseptic packaging processes and as well as spraying liquid in spray aseptic packaging processes.