Does sodium hypophosphite go stale with age.
I 've got 22kg of a 25kg bag left. The bag has been air tight pretty much after each time i been in to it, and has not been getting any light in it. The only thing maybe i can think of is the temperature as it is pretty much around 40 degrees celsius each day so the storeroom it's kept in would have to hit 45 degrees as it is not airconditioned.
Answers anyone please...
cheers 8ball