Ah, those!
Have a funny story.
Son used to use his pocket money to buy himself Beef Jerky, and snack on while gaming. He was around 10 or so.
One night, we watched a movie, and he got out a new pack.
Opened it, took out the little packet, opened it and sprinkled it over the jerky.
( I never had store bought beef jerky myself at that time)
I asked him what that was. ‘Spices’ he told me.
I looked, and saw it was a white powder. I thought it was a moisture regulating sachet, a desiccant.
He is 5 inches taller than me. Maybe that chemical??
( or Post man?
. )
Until now I thought they were a desiccant.
I am now restoring a couple Zeiss WW2 era big eye bins, and wanted to use those sachets in a custom made capsule, instead of the desiccating capsules that arelong gone.
I think this tread saved me from making a huge mistake! Lots, lots of money potentially!
Many, many, MANY thanks!