At NINGBO INNO PHARMCHEM CO.,LTD., we understand that the performance of a pigment is deeply rooted in its chemical composition. Phthalocyanine Blue 15:3, also known by its C.I. number 74160, is a prime example of this principle. Its molecular structure, based on the copper phthalocyanine complex, endows it with remarkable stability and coloristic properties that are highly sought after in industrial applications. This section explores the chemical attributes that make PB15:3 a superior choice for colorants.

The molecular formula for Phthalocyanine Blue 15:3 is C32H16CuN8. This complex organic molecule features a central copper atom coordinated by a macrocyclic ligand. This highly conjugated system is responsible for absorbing specific wavelengths of light, resulting in its characteristic blue appearance. The beta crystalline form, denoted as 15:3, offers a green shade of blue with high tinting strength and excellent dispersibility, making it a favorite for many users looking to buy this pigment.

One of the most significant advantages derived from its molecular structure is its exceptional heat resistance. Phthalocyanine Blue 15:3 can withstand temperatures up to 300°C in some formulations, though typical industrial use sees its heat stability rated around 220-230°C. This characteristic is crucial for plastics processing, where high temperatures are common. It ensures that the pigment does not degrade or change color during extrusion, injection molding, or other thermal treatments. This makes it a reliable option for heat stable blue pigment for plastics.

Lightfastness is another property directly linked to the phthalocyanine structure. PB15:3 exhibits excellent lightfastness, often rated at 7-8 on a scale of 8. This means it resists fading or color degradation when exposed to sunlight or UV radiation. This is vital for outdoor applications, such as automotive coatings and durable plastics, where maintaining color integrity over long periods is essential. This enduring quality contributes to its reputation as a high-performance organic pigment.

Furthermore, the chemical inertness of the phthalocyanine molecule provides resistance to acids and alkalis. While specific resistance levels can vary, PB15:3 generally performs well in moderately acidic or alkaline environments. This chemical stability is advantageous in formulations where contact with reactive substances might occur, ensuring that the pigment's color remains unaffected. This chemical resilience is a key differentiator when considering specialty inks and dyes.

The combination of these properties – vibrant color, high tinting strength, superior heat and light stability, and good chemical resistance – makes Phthalocyanine Blue 15:3 a highly versatile and dependable pigment. NINGBO INNO PHARMCHEM CO.,LTD. is committed to providing access to this advanced colorant, enabling industries to achieve superior product finishes. For those seeking the best blue pigment for masterbatch or seeking the finest phthalocyanine blue 15:3 coating applications, understanding its chemical underpinnings is key.