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[graatch]

There are various highly antioxidative powders and such I have around, and I've been considering adding oxygen absorber packets to some of them. But I know that as part of the mechanism, heat is generated. For substances also liable to break down upon heat exposure, should one avoid using these? Particularly in a smaller container? -- let's say 4oz containers and smaller packed with powder or tablets are my concern, since I doubt it's an issue in a big bag or something. This is not something I know much about so an education would be much appreciated.

[Daniel Cooper]

The oxygen absorbers are generally just finely powered iron and absorb O2 by turning to rust.  They do so very slowly, so I think the temperature rise you're going to get in your container will be minimal.