Corrosiveness, especially when related to water.(noun)
Wiktionary.org : Text is available under the Creative Commons Attribution-ShareAlike License
Use "corrosivity" in a sentence
"Effects range from mild irritation to severe changes, such as corrosivity, hypersensitivity, and skin cancer."
""There are some questions about the corrosivity and the abrasiveness and the pressure and the temperature that need to be answered," Weimer said."
"However, the design needs to ensure that there is no chemical interaction (e.g., sodium-water), and if lead-cooled, the materials used need to be capable of managing the corrosivity of molten lead."