Copper Sulfate

In the update trailer for 1.14, an item can be seen being thrown by a villager. It looks like a blue version of Redstone. Copper is being added into 1.17, and this opens a variety of opportunities. But I'm talking about Copper Sulfate. Copper Sulfate is blue, like the "bluestone" in the trailer. Copper Sulfate could have some Redstone property. Or it could be used to hurt mobs, since Copper Sulfate is very toxic. This could be implemented in a variety of ways, but I'm just putting this idea out there.