Abstract: A disoxidant comprising, in combination, a metal component having a disoxidation activity and a halogen-containing oxyacid salt as an electrolyte component. Especially, in a case where a chlorite is used as the electrolyte component, there can be provided an excellent disoxidant having both disoxidation and sterilization activities.

Abstract: A process for preparing a disoxidant, comprising: providing fine powder of a porous filler f-1, such as zeolite, having a particle size not greater than 100 mesh and coarse powder of a porous filler f-2, such as zeolite, having a particle size greater than 100 mesh; adding water to the coarse powder f-2 such that the total water content for the sum of the fine and coarse powder f-1 and f-2 is 20-90% of the amount of saturated water absorption thereof; mixing 20-60% by volume of the fine powder f-1 with 80-40% by volume of the coarse powder f-2; and admixing the resulting mixture F with fine metallic powder M, such as iron, having disoxidation activity and a particle size not greater than 100 mesh, with a volume ratio M/F of the component M to F being in the range of 1/2 to 1/10. Disclosed also is a disoxidant obtained by the above process.

Abstract: An effective oxygen-consuming composition for packages, containers, or other closed spaces, especially containing an article susceptible to oxidative deterioration, comprises a dithionite for reacting with oxygen, sufficient alkaline material to at least partially neutralize sulfur dioxide released as a by-product of the oxygen consuming reaction, and porous filler particles in sufficient amount to promote contact with the ambient atmosphere, all in homogeneous mixture.