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Search options answers only not deleted user 189

Should be used for question pertaining to part of propellant that is used to ignite the fuel.

16 votes
Accepted

Other than He and N as pressurizing gases

at room temperature, polymerizes and releases hydrogen on heating, probably not safe to mix with oxidizer even if you could; hydrogen cyanide (HCN): toxic, flammable, unsafe to mix with oxidizer, liquid … monoxide (CO): toxic, flammable, not safe to mix with oxidizer; nitric oxide (NO): heavier than nitrogen, reactive, probably not safe to mix with either fuel or oxidizer; oxygen (O2): good oxidizer, unsafe …
Ilmari Karonen's user avatar