Product feature:

* The product can be dissolved uniformly by any amount of water at any condition, and can disperse uniformly quickly in paper pulp, so finished paper quality is stable;

* It has better weather resistance and light resistance compared with VBL whitening agent, and finished paper will not turn yellow easily;

* Even it is used under low PH value, a good whitening effect can be obtained, far better than other whitening agents;

* The product is in the form of liquid and doesn't pollute the environment, ensuring operating personnel's health. In addition, it can be fed continuously and is very convenient to use.

Product index:

* Appearance: Amber transparent liquid

* Chemical structure: Diaminostilbene diphenylethene tetrasuphonic derivative

*Acid-base resistance property: It is used within the PH range of 3-12 (except particular circumstances)

* Fluorescence intensity: 35±1

* PH value of product: 7—10

* Density (25℃): 1.05—1.20ｇ/cm3

* Viscosity (25℃): ≤80 mpa.s

* Ionicity: Anionic

*Fastness: Compared with similar products, this kind of whitening agent has the same light fastness and acid & alkali fastness.

Application range:

* It can fluorescently whiten paper pulp. This product can be used to whiten paper pulp of the internal sizing, with or without filler and paperboard under PH value in the range of 4.5-10.

* It can be used to conduct fluorescent whitening in the surface sizing process, and can be used together with polyvinyl alcohol, hydroxyl methylcellulose and alginates in water soluble starch-based seizing liquid.

* It can be used to conduct fluorescent whitening in the coating process. In order to achieve the ideal effect in the process of fluorescent whitening of whitening agent, it is needed to add appropriate amount of auxiliary adhesive such as polyvinyl alcohol and hydroxyl methylcellulose.

Notes:

* This product has strong hydrophilia and excellent storage stability.

* If placed under the environment under 0℃ for a long time, the product will solidify; and can continue to be used after being melted under normal temperature or through heating at a temperature below 50℃.

* It is sensitive to light before use. Please keep it away from direct sunlight.