What sort of places have SN?

[Marktheghost]

There's an abbatoir not far from where I live. Would it be worth asking there about sodium nitrite, as it's used for curing meat? Or would it be worth asking about it at the local butcher's? If they haven't got any themselves, maybe they'd know where I can buy some?

 

[Soul]

A chemical supply house seems more likely, but you can always ask.