Igniting sulfur blocks should cause a small continuous explosion

In real life, when sulfur gets ignited, it melts into a flaming liquid, being consumed by a faint, low-temperature dark blue flame releasing toxic sulfur dioxide and trioxide in the air. 

However, since the natural laws of Minecraft are vastly different from real life, and it wouldn't be that valuable to have a new fluid with few interesting properties nor another blue fire with a slightly different hue, there should be another way to render the fact that sulfur is the backbone of pyrotechnics.

Since sulfur dust suspended in the air is a widely known explosive hazard, my suggestion is that when ignited, instead of producing a regular flame maintained on the top of the block, sulfur blocks produce a small, continuous explosion above their top.
This explosion shouldn't have enough destructive power to destroy solid blocks or dropped items, but it should apply explosion physics and effects to entities, including pushing them outwards and dealing damage when they draw too close from the center. This explosion could be smothered by placing a block on the top of the burning sulfur, and otherwise should be deflagrating continuously in the same fashion netherrack burns continuously.
Also, with potent sulfur, the effects of this continuous explosion could be more important, in a larger range.