Pure SN is not the same thing they use to cure meat. I would avoid using any argument that might suggest that anyone is going to consume it lol. It might be safer to tell them that you're a chemistry student, senior year, and I don't know, for instance, you're writing your thesis about artificial food colorants. Also, of course it's 100% up to you, but please just keep in mind that it's technically breaking the law, they don't make the rules for fun and it actually comes with consequences. We know it's a sad way to "protect" suicidal people but the reality is like that and there's not much we can do about it :( Keeping fingers crossed that everything works out for you!!
