Good water solubility, soluble in 3 - 5 times the volume of boiling water, each liter of boiling water can dissolve about 300 g, the cold water can dissolve about 150 g. It is insensitive to hard water, calcium and magnesium ions do not affect its whitening effect, anti-peroxide bleach, anti-reducing agent. Good acid resistance, with suitable pH range of 3 - 12. It is used for whitening cotton fiber, viscose fiber and combination fabrics of cotton and other synthetic fibers, and can also be used for white discharge printing.

It is insensitive to hard water, calcium and magnesium ions do not affect its whitening effect, anti-peroxide bleach, anti-reducing agent. Good acid resistance, with applicable pH range of 3 - 12. It is used for whitening cotton fiber, viscose fiber and combination fabrics of cotton and other synthetic fibers, and can also be used for white discharge printing.

Optical brightener CBS-L is the stilbene biphenyl type, which is the excellent one for detergents. It can be mixed with water in any proportion, has good whitening effect on cellulose fiber, polyamide and azelon at room temperature, and is suitable for high temperature pad dyeing. The product is free of dust pollution, easy to use and suitable for use in continuous production. It is extremely stable to sodium hypochlorite and is a bleach-resistant optical brightener. It is suitable for liquid detergent, soap, toilet soap and other washing products, and can also be directly used for optical whitening of cotton, flax, silk, wool, chinlon and nylon at room temperature.

The product is easy to dissolve, with good alkali resistance, better acid resistance than VBL and suitable pH range of 6 - 12, and can be used with anionic or non-ionic surface active agents in the same liquor. It is mainly used for whitening of cellulose fibers such as cotton and flax, brightening of light-colored fabrics, and can also be used for whitening of paper pulp.

High fluorescence quantum yield, extremely resistant to chlorine bleaching, hydrogen peroxide bleaching, strong acid and strong alkali. It can significantly increase the whiteness of washing powder, soap and toilet soap, and improve its appearance quality. At low temperatures, it can whiten clothes evenly and do not produce spots in the hand and machine washes with short liquor ratio. High whitening effect on cellulose fiber, polyamide, azelon, cotton cloth etc. in cold and warm water. It has excellent light fastness in dry and wet as well as excellent perspiration resistance. The effect is better after repeated washing. With large average particles, the product is environment-friendly, which is mainly used in synthetic washing powder, liquid detergents, but also in the whitening of soap and toilet soap, fabric softeners and finishing agents, and can be added at any step in the manufacturing process of synthetic detergents, soaps and toilet soap. It can be used either alone or combined

Easily soluble in water, the solubility in cold water is about 200g/L, and about 300g/L in boiling water. Medium affinity for cellulose fiber, stable to peroxide, hypochlorite, reducing bleaching agent, alkali and hard water resistant, medium acid resistance, suitable pH range of 5.0 - 12.0. It is mainly used for surface sizing and surface coating whitening of pulp and paper, also used for whitening of cotton fiber and viscose fiber.

The product has good alkali resistance, better acid resistance than VBL, and suitable pH range of 7 - 12. Compared with BA, the product is an environmentally friendly product with excellent high and low temperature storage stability. It is mainly used for whitening paper pulp; and can also be used for whitening cotton, flax and cellulose fiber fabrics and brightening light fiber fabrics. It can also be used in synthetic detergents.

Low affinity with fiber, suitable for surface sizing and coating process, easy to use, can be directly diluted with water and used, resistant to hard water, resistant to good acid, suitable pH range of 3 - 12, in the lower pH value, but also has excellent whitening effect, with good alkali and light color fastness. It is mainly used for whitening of papermaking surface sizing and coating process, also can be used for whitening of cotton fiber and viscose fiber.