dissolvent

adj

1. Capable of dissolution into a fluid.
2. Having power to dissolve a solid body.

   “the dissolvent juices [of the stomach]”

   “[T]he operator evidently perceives the dissolvent property of the jaggery water, on its being tempered with the prepared mortar.”

noun

1. A substance which can dissolve or be dissolved into a liquid.

   “For, that the ordure, which continually gathers on the skin, would ſoon ſtop the pores of it, if the ſweat were not furniſht with ſome efficacious diſſolvent to open and pierce them.”