Nitrous oxide laws in Missouri

We found no Missouri law restricting the sale or shipping of whipped-cream chargers, nitrous oxide tanks and crackers.

What we searched

RSMo 579.097-579.103 https://revisor.mo.gov/main/OneSection.aspx?section=579.103
RSMo ch. 579 and 578 indexes https://revisor.mo.gov/main/OneChapter.aspx?chapter=579

Inhalant sections name solvents/nitrites, not nitrous oxide; no sale/age rule.