How long does it take for a body to dissolve in sulfuric acid? Any sites Iwith info? Serious answers please.?

I'm looking for all the effects sulfuric acid will have on a body, preferably how long as well as how much. I need to find out how a sociopath can use the acid in means to "destroy" a victim. If you know of any sites where I can find more information, I'd appreciate it. Google searches are leaving me cold. Thanks!