Optical Brightener 4BK

Purity 99%: Optical Brightener 4BK with purity 99% is used in polyester fiber production, where it delivers superior whitening and brightness consistency. Melting Point 225°C: Optical Brightener 4BK with melting point 225°C is used in high-temperature polymer extrusion, where it ensures thermal stability and maintains optical clarity. Particle Size 3 μm: Optical Brightener 4BK with particle size 3 μm is used in water-based coatings, where it provides uniform dispersion and enhances coating gloss. Molecular Weight 600 g/mol: Optical Brightener 4BK with molecular weight 600 g/mol is used in detergent formulations, where it improves fabric whiteness and wash fastness. Stability Temperature 180°C: Optical Brightener 4BK with stability temperature 180°C is used in plastic compounding, where it retains fluorescence without degradation under processing conditions. Solubility in Water 15 g/L: Optical Brightener 4BK with solubility in water 15 g/L is used in liquid laundry detergents, where it ensures homogeneous optical effects and easy formulation. Light Fastness 7 (Blue Wool Scale): Optical Brightener 4BK with light fastness 7 is used in PVC film manufacturing, where it maintains long-term brightness under UV exposure. Viscosity Grade Low: Optical Brightener 4BK with low viscosity grade is used in inkjet printing inks, where it allows for smooth flow and stable print quality.