Which of the reactions between CaSO4 with either NaHCO3 or NH4HCO3 would be faster? I'm trying to dissolve some set plaster at room temp. I've experimented with NaHCO3 but I have yet to get my hands on any NH4HCO3 though.... The simple baking soda worked really well at elevated temps, quite impressive actually. I've read here btw and would really like to stay away from the strong acids/bases... Any insight? Thanks!