Noun
The quality or property of corroding or being corrosive, of eating away or disintegrating; acrimony.
(figuratively) Such property in some immaterial agent.
Some property characteristic of a corrosive substance, as its taste.
Source: en.wiktionary.orgThe two principal types of flux are acid flux, used for metal mending and plumbing, and rosin flux, used in electronics, where the corrosiveness of acid flux and vapors released when solder is heated would risk damaging delicate circuitry. Source: Internet
Claims of less corrosiveness of these products have been controversial however. Source: Internet