Ok here's my reference point - Paintball.
In paintball we have two tanks - CO2 tanks and N2 tanks. The former contains a liquid, and the latter contains a gas (either pure N2 or plain old compressed air). Because of the behaviour of both at around room temperature, the CO2 tanks are built to withstand far less pressure than the N2 tanks (about 1000PSI versus 4.5k PSI), because the N2 is just a gas under pressure, whereas the CO2 is a mix of liquid and gas under (less) pressure. The point is to be able to deliver the same volume of gas for each kind of tank - as you might expect from say an Air Liquide fill.
Therefore if the Nitor gas stuff isn't liquid, then either the tanks are going to be much stronger (to deliver the same quantity of gas as a CO2 canister of comparable size), or the CO2 tanks were built to withstand much higher internal pressures than they really require.