Safe To Put Nitrous Bottle On Sub Box?

Below is a rough sketch/color of the sub box im working on and would it be safe to put the nitrous bottle on a "shelf" that will be between the two subs? still trying to figure out where im going to put the amp, and other components but i know some have said its not good to have the amp directly on the sub box. this should be a slide in box to fit right behind the rear seats.