PROBLEM TO BE SOLVED to further improve the oxygen absorption capacity of granular oxygen scavenger.SOLUTION: A plurality of complexes comprising a porous carrier and a granulated material containing an oxygen absorbing composition carried on a carrier and hydrophilic inorganic fine particles adhering to the surface of the granulated product An oxygen scavenger which is a powder containing particles is disclosed. The oxygen absorbing composition contains a liquid agent containing an oxygen absorbing substance, an alkaline compound, and a transition metal compound.Selection drawing None【課題】粒状の脱酸素剤に関して、酸素吸収能力の更なる向上を図ること。【解決手段】多孔質の担持体、及び担持体に担持された酸素吸収組成物を含む、造粒物と、造粒物の表面に付着している親水性無機微粒子と、を備える複数の複合粒子を含む粉体である脱酸素剤が開示される。酸素吸収組成物は、酸素吸収物質を含む液剤、アルカリ性化合物、及び遷移金属化合物を含有する。【選択図】なし