Solubility:

Insoluble in water, soluble in high-boiling organic solvents such as trichlorobenzene.

Other Characteristics:

Due to its high melting point, this optical brightener exhibits excellent heat resistance and light fastness, with particularly outstanding chlorine bleach resistance.

Applications:

This optical brightener is particularly suitable for molding and processing various plastics and plastic products at high temperatures. Owing to its excellent heat, light, and chlorine bleach resistance, it is also ideal for whitening polyester fibers and polyester-cotton or other blended fabrics. Additionally, it can be used for whitening polyester raw liquor.