Optical Brightener for Cotton 4BK - Enhance Fabric Whiteness and Brightness is an innovative product designed to improve the visual appeal of cotton and polyester-cotton blend fabrics. This brightener, from a stilbene-type compound, provides a remarkable whitening effect that transforms dull fabrics into radiant materials.

The optical brightener appears as a yellow-green uniform powder, ensuring ease of use in various fabric treatment processes. Users will appreciate its high light resistance and chemical stability, which guarantees effective results even in challenging conditions. Additionally, the product is formulated to withstand washing and retains its efficacy over multiple cycles, making it an ideal choice for manufacturers looking to deliver textiles.

Technical Index:
Main ingredients: Stilbene type
Appearance: yellow-green uniform powder
E-value: 120-185
Tone: Blue light or Redish light
Moisture content: ≤5%
Ionicity: anionic 

Characteristic:
* With strong fluorescence, excellent whitening effect and slight bluish shade
* With high light resistance and chemical stability.
* Good acid resistance, stable in perborate and hydrogen peroxide.
* Good washing fastness.

Overall, Optical Brightener for Cotton 4BK provides users with the ideal solution for achieving superior fabric brightness, ensuring that textiles not only meet but exceed market expectations.