Patent ID: 8039022
Filing Date: 2011-10-18
Classification: A01N,A61L,B65B,C01B

Abstract:
1. A hydrogen peroxide solution for sterilization which is used in an aseptic filling equipment and which sterilizes a vessel or a packaging material by hydrogen peroxide vapor, said hydrogen peroxide solution comprising hydrogen peroxide, Fe, and Al, wherein a hydrogen peroxide concentration is 30 to 45% by weight; an Fe concentration is 2 ppb or less; and an Al concentration is at least 15 ppb; wherein said solution includes a stabilizer consisting of orthophosphoric acid, and a concentration of the stabilizer consisting of orthophosphoric acid is 40 ppm at the most, wherein the aseptic filling equipment has a spray nozzle and an evaporator, and wherein a material of a part brought into contact with the hydrogen peroxide solution for sterilization is an austenite base stainless material, said hydrogen peroxide solution, containing the Al and the orthophosphoric acid, having a property that the Al and the orthophosphoric acid contained in the hydrogen peroxide solution form a passive coating on said austenite base stainless material.