C2 noun/adjective /prɪˈsɪpɪtənt/
precipitant
Fällungsmittel
Meaning
As a noun: a substance that causes a substance to be deposited from a solution; as an adjective: acting hastily or impulsively.
Example
The chemist added a precipitant to the solution to observe the reaction.
Der Chemiker fügte der Lösung ein Fällungsmittel hinzu, um die Reaktion zu beobachten.