PROBLEM TO BE SOLVED: To provide a material for suppressing color transfer to an object to be sterilized contained in a bag for sterilization and color fading.SOLUTION: The material 15 for suppressing color fading and color transfer of a sterilization indicator forms an inner wall of the bag 10 for sterilization into which the object 18 to be sterilized is inserted. The material is layered between a covering film 12c which permeates high-pressure steam and ethylene oxide gas which enter the bag 10 for sterilization and sterilize the object 18 to be sterilized and a substrate film 12a which forms an outer wall of the bag 10 for sterilization. The material comprises: a steam sterilization detection indicator ink layer and an ethylene oxide gas sterilization detection indicator ink layer 16 which are both arranged on one side of the substrate film 12a and a laminate layer 12b which covers these ink layers and is adhered to the covering film 12c. The ethylene oxide gas sterilization detection indicator ink layer contains a mono azo dye which changes in color with ethylene oxide gas suppressing color fading and shown by the chemical formula: X-N=N-Y [where X is a residue of a heterocyclic compound selected from the group consisting of a pyridine ring, a quinoline ring, an isoquinoline ring, a triazole ring, a tetrazole ring, an indazole ring, a thiazole ring, a benzothiazole ring and a thiadiazole ring each including a nitrogen atom to which no atom group is attached and has an electron-donating substituent group and Y is a coupling component and has at least one type of substituent group selected from the group consisting of a hydroxy group, a sulfo group, an amino group and a group containing fluorine atoms]. The laminate layer 12b includes polyurethane which suppresses transfer of the mono azo dye to the object 18 to be sterilized.COPYRIGHT: (C)2013,JPO&INPIT【課題】滅菌バッグに収容した被滅菌物への転写及び退色の抑制材を提供する。【解決手段】滅菌インジケータの退色及び転写の抑制材15は、被滅菌物18を挿入する滅菌バッグ10の内壁を形成し、滅菌バッグ内に進入して被滅菌物を滅菌する
