The gas fumes strongly in moist air, and it is rapidly dissolved by water, one volume of water at o° C. absorbing 503 volumes of the gas.
On the other hand, they may give off unhealthy fumes and produce unpleasant odours.
A flue should in all cases be provided to carry off the fumes of the fuel.
At ordinary temperatures hydrobromic acid is a colourless gas which fumes strongly in moist air, and has an acid taste and reaction.
It fumes strongly in air, and does not attack glass.