Nitrous oxide laws in Montana

We didn't find any Montana law restricting the sale or shipping of whipped-cream chargers, nitrous oxide tanks and crackers.

What we searched

https://archive.legmt.gov/bills/MCA/title_0450/chapter_0090/part_0010/sections_index.html
https://archive.legmt.gov/bills/MCA/title_0450/chapter_0090/part_0010/section_0210/0450-0090-0010-0210.html (45-9-121 possession of toxic substance)

MCA 45-9-121 covers only inhaling/possessing toxic substances; no sale rule.