Help Do you think SN is still good if I kept in a ziplock bag?

[ceelobling]

I was stupid, I should've put it in an air-tight container or jar. The sn came in a stand up pouch. When I first made an sn drink last year, after I was done I took sn out of its pouch and put it in a big ziplock bag because it shows the company info on it. There's no sticker I can remove, the company info is printed itself on the pouch and I didn't want parents seeing the brand when I died. Do you think the sn is still toxic enough to drink or did I mess up and can't rely on it? Did the sn degrade a significant amount and is not pure enough to kill? I was thinking of saying fuck it and using it but idk. I'm gonna test the sn with my strips when I'm able to, but if it were to show it still contains sn, would it still be pure enough to kill?