Used as a corrosion-inhibiting pigment in coatings, especially in primers for metals like steel and aluminum in aerospace and automotive industries. Provides protection against rust by forming a passive layer on the metal surface.

Also utilized in the production of green-colored pyrotechnics and signal flares due to its ability to produce a bright green flame when burned.

Due to its toxicity and carcinogenic properties, its use is strictly regulated, particularly in products that may contact humans or the environment.