Phthalocyanine Blue BGS (PB15:3) is a bright greenish-blue powder at room temperature, insoluble in water, and exhibits excellent anti-crystallization stability in various organic solvents. As a copper phthalocyanine-based organic pigment, it possesses highly stable chemical properties, with outstanding lightfastness, heat resistance (approximately 300°C), weather resistance, and resistance to acids and alkalis. Based on these characteristics, its primary application is as a high-performance blue colorant. It is widely used in the production of high-quality inks (particularly for four-color printing), industrial coatings, automotive coatings, plastic products, mass coloration of synthetic fibers, and artist paints, where vibrant color and exceptional durability are required.