Just to think of a few names that I've seen in the UK as SN related suicides like Jason Thompson, Thiago Araujo, Lee Elliot, Tom Parfett, Wira Wahyudi Sinuraya, etc... all of this coinciding with the deaths connected to Laws IC Sn which was part of an international investigation and so because Law sold over 250 of his 1200 packages of SN to the UK alone, it definitely was coming that SN would be restricted since parents would want it done although some of the deaths from sn were older people as well. Considering the UK is also a substantial media presence in Europe and the west in general, other parts of the continent became aware of suicides related to the substance, rushing to avoid any legal issues to protect them by restricting it as much as possible.
How much sn did you get, was it 50g?
There is a significant concern but that's if you've not kept it according to instructions mentioned in the Material Data safety sheet although you got it from IC so I doubt this information came with your purchase. There's always the ability to test it before use but I get it, it's a bit of paranoia creeping in that will inevitably lead to doubt over the chances of this ever working out the longer you hold onto it.
It's really dependent on two things. Your psychological state and how unbearable the situation is for you, how much you truly do not want to wake up tomorrow if it came down to it.
No, it won't get spoilt really fast as SN takes time to oxidize but the process is accelerated significantly when exposed to the conditions/sources to avoid namely heat, moisture, reagent materials or chemicals, combustible materials. Anything that sn could possibly react to especially if its repeatedly exposed to otherwise, I don't see why people still worry so much about it. Sn. Above Temps of 330C, Sn will decompose into Sodium Oxide, Nitric oxide and Nitrogen dioxide so unless you do live in conditions that are close to this, you have next to nothing to worry about if you keep it simple in terms of storage. These bottles have likely been sitting in rusty old wooden shelves in storage before being shipped out to the buyer, be it a lab or business. The fact that I have to keep explaining this shows that this fear will never die. Users like @Quarky00 took the time to address this a few years back and I thought it was enough to deal with the overall concern about SNs sensitivity to air and keeping it in storage.