Suggestions for gases please

[TheScienceCat]

I was wondering what gas I should use on one of my projects. It needs to be denser than air, somewhat flammable, non toxic to humans in small amounts and preferably easy to see, like chlorine or bromine (But neither of these work, as they are less dense than air). I got this idea from a game character Scorch from Titanfall 2. He is able to shoot/launch out a gas canister and the ignite them, and I would like to do something like that. The gas can't be too expensive or hard to find.

[beecee]

3 hours ago, TheScienceCat said:

I was wondering what gas I should use on one of my projects. It needs to be denser than air, somewhat flammable, non toxic to humans in small amounts and preferably easy to see, like chlorine or bromine (But neither of these work, as they are less dense than air). I got this idea from a game character Scorch from Titanfall 2. He is able to shoot/launch out a gas canister and the ignite them, and I would like to do something like that. The gas can't be too expensive or hard to find.

Less dense then air? Are you serious or is that a typo? 

Both are of course far more dense then air, just as is CO2 and LPGs 

[et pet]

    Have y

6 hours ago, TheScienceCat said:

I was wondering what gas I should use on one of my projects. It needs to be denser than air, somewhat flammable, non toxic to humans in small amounts and preferably easy to see, like chlorine or bromine (But neither of these work, as they are less dense than air). I got this idea from a game character Scorch from Titanfall 2. He is able to shoot/launch out a gas canister and the ignite them, and I would like to do something like that. The gas can't be too expensive or hard to find.

This may help : https://www.engineeringtoolbox.com/gas-density-d_158.html

[TheScienceCat]

17 hours ago, beecee said:

Less dense then air? Are you serious or is that a typo? 

Both are of course far more dense then air, just as is CO2 and LPGs 

Yeah, that's a typo. It was late and I meant to type too toxic. 

[John Cuthber]

They are also not flammable.

Propane, butane and dimethyl ether meet most of your stated requirements but you should realise that this is a potentially very dangerous game to play.

[beecee]

6 hours ago, TheScienceCat said:

Yeah, that's a typo. It was late and I meant to type too toxic. 

No probs.