Fluorescent Brightener VBL

CAS NO： 12768-92-2

Main ingredients ：Stilbene-triazine type

Appearance ：Pale yellow homogeneous powder

Product Characteristics

Structural formula：

C.I.113

Molecular formula:C₄₀H₄₂N₁₂THE₁₀S₂That₂

Relative molecular weight:960.95 (according to1991International Relative Atomic Mass)

Maximum UV absorption wavelength:348 nm

Implementation standards:Q/LQH001-1997

Quality indicators:

Performance characteristics:

This product is easily soluble and has good acid and alkali resistance.pH4.5-7The whitening effect is significantly better thanVBLIt is anionic and can be used in the same bath with anionic or nonionic surfactants.

Scope of application:

It is mainly used for whitening of pulp, surface sizing, coating and other processes. It can also be used for whitening of cotton, linen and cellulose fiber fabrics, and brightening of light-colored fiber fabrics.

Directions:

1. Used in paper industry20Dissolve the material in water and add it to pulp or coating or surface sizing agent. The normal dosage is 1/2 of absolute dry pulp or absolute dry coating.0.1-0.3%。
2. When used for whitening cotton, linen and cellulose fibers, add the fluorescent brightener directly into the dye vat and dissolve it in water before use.0.08-0.3%   Bath ratio:1：20-40   Dye bath temperature:60-100℃。

Package:10kg or 25kg carton or drum. Can be customized according to customer needs.

transportation:Handle with care, keep away from moisture and sunlight.

Storage:Store in a cool, dry place away from light, The storage period is two years.

away from light, The storage period is two years.