Fluorescent BrightenerHexasulfonic AcidIt can dissolve uniformly in water at any ratio under any conditions and quickly disperse evenly in pulp, ensuring stable quality of the finished paper. The finished paper is less prone to yellowing. Due to the high yellowing point of hexasulfonic acid, it allows for continuous layering and cumulative whitening, achieving a higher visual whiteness.

Fluorescent BrightenerHexasulfonic Acid, due to its excellent acid resistance, offers broader adaptability in applications compared toVBLbrighteners. It can whiten silk fabrics, animal fibers, and polyamide fibers in acidic media. It can be used in the same bath with peroxide or reducing agent bleaching solutions and provides excellent whitening effects on cotton fabrics, viscose fibers, nylon, paper, and laundry detergents.