I got some "Nitrocellulose, Solid" from firefox-fx a year or two ago and have not gotten around to using it yet. I happened to pull it out today and noticed the plastic pouch it shipped in has expanded like a balloon. It has not yet burst, so I put it in a large ziploc to contain it should it burst.
Why did it expand?
Label has this on it:
cellulose nitrate wet w/water; nitrocotton
packed with water - must be dried for use
I have kept it stored in a cool, dry location. label says above 45F and below 85F. I sincerely believe those conditions have been met. I suppose it is possible it got above 85F. Would that cause the expansion?
It is also no longer pure white but has some yellowing at the fringes - pretty sure it is the nitrocotton and not the plastic it is stored in that is yellowing. I have not opened it yet because I still am not ready to use it.
Thanks for any info.