Help sodium nitrite disposal

[hop33xit]

hi everyone,
I have 2 kg of SN, which is understandably a lot. i'm going to call a couple of local services i found to recycle it.
but what do I say if they ask me "what did you use it for or intend to use it for?".
It is legal to buy in my country, but I would like not to arouse any suspicion if there are any questions.

I would be grateful for your help

 

[derekWest]

I thought just throw it into ocean where nobody go swimming...

 

[locked*n*loaded]

Down the toilet. It's not an enough of an amount to make any difference. And it's not even a poison, per say. It will get cleaned out at water treatment.