The standard shelf life of deoxidizers is one year, but they are all sealed and vacuum-packaged, so there is no problem for two years in actual application, provided that the vacuum packaging is intact.

In addition, according to the chemical reaction principle of the deoxidizer, without water, the basic composition of oxygen will not change, so it will not fail. The chemical deoxidizer has stable properties, is insoluble in water, and does not react with other substances except strong alkali and hydrofluoric acid.