Optical Brightener 4BK

Short Description:

Chemical Name: Stilbene


Appearance:Slight gray-yellowish powder


PH value:7.0-9.0

Product Detail

Product Tags


It can dissolved in the hot water,has high whiteness increasing power,excellent washing fastness and minimum yellowing after high temperature drying.

It is suitable for brightening cotton or nylon fabric with exhaust dyeing process under room temperature, has powerful strength of whiteness increasing, can achieve extra high whiteness. 


4BK:0.25 ~ 0.55%(o.w.f.)  

Procedure: fabric :water 1:10—20

90—100℃ for 30—40 minutes 

Package and Storage:

Package: 25KG bag

Storage: Store the product in a cool, dry, well-ventilated area away from incompatible materials.

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