Meh. It was a decent way to make nitroglycerin less unstable, but there are so many better, safer explosives. TNT, for example, is stable enough to be melted down and cast into shells. C4 burns like a candle and won't detonate without a blasting cap.

Dynamite tends to "sweat" nitroglycerin over time, and then the slightest amount of heat, friction, or impact can cause it to detonate.