7. Handling and Storage
Keep in a tightly closed container, stored in a cool, dry, ventilated area. Protect against physical damage and moisture. Isolate from any source of heat or ignition. Avoid storage on wood floors. Separate from incompatibles, combustibles, organic or other readily oxidizable materials. Containers of this material may be hazardous when empty since they retain product residues (dust, solids); observe all warnings and precautions listed for the product.
Page one of Google. I can see that you're clearly really worried about this. If you really want to be 100% sure it stays totally fresh/pure/active, you need to follow these instructions. If you can't, you'll have to deal with the potential consequences. It really is that simple, bud.