Used as a corrosion inhibitor in aerospace and aviation coatings, particularly for protecting aluminum surfaces. Provides excellent adhesion and long-term protection in high-stress environments. Commonly found in primers for aircraft components due to its ability to resist moisture and salt exposure. Also utilized in some industrial paints and anti-rust treatments where durable, protective coatings are required. Its use is limited in consumer products due to environmental and health concerns related to hexavalent chromium.