Aqueous solution suitable for the chemical sterilization of packaging materials, process for its preparation and its use Aqueous solution suitable for the chemical sterilization of packaging materials, comprising hydrogen peroxide and at least one foodstuff-compatible stabilizer. This solution but without the stabilizer has a maximum phosphorous content expressed as PO4- 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.