The propellant for the Panzerfaust 60 consisted of 134 g (4.7 oz) of black powder, which was contained in a small cardboard tube.
Caution was to be paid to the backblast of the weapon, it created an explosion blast of two to three meters ( 6.5 - 10 ft.) behind the tube.
Therefore on many Panzerfausts, especially the early Panzerfaust 30 m, a warning in large red letters printed on the upper rear part of the tube advised to stay clear:
Achtung! Feuerstrahl! ("Beware ! Fire Jet !").
I am sure your propellant is long gone, it looks like a nice example for your collection - I have a couple of replica ones - I'd like one of these relics though.