Specifically designed for cotton and polyester-cotton blend fabrics, the Optical Brightener for cotton 4BK delivers exceptional whitening results. With its one-bath method, both pre-treatment and whitening processes are conveniently completed simultaneously.

This superior product is known for its remarkable fluorescence and ability to create a slight bluish shade, resulting in enhanced fabric brightness. It demonstrates outstanding resistance to light and chemicals, ensuring that the fabric maintains its vibrant appearance even after prolonged use.

The optical brightener exhibits excellent acid resistance and remains stable when exposed to perborate and hydrogen peroxide. Additionally, it boasts good washing fastness, providing long-lasting whiteness.

Manufactured with main ingredients of the stilbene type, the optical brightener for cotton 4BK presents a yellow-green uniform powder with an ionicity of anionic. Its E-value ranges from 120 to 185, offering a choice between blue light or reddish light tone. The moisture content is kept below 5%, guaranteeing product integrity.

Our company is based in Hebei, China, and has gained recognition for its high-quality textile chemicals. With our product, you can achieve superior fabric whiteness and brightness, elevating the overall appeal of your textiles. Benefit from our competitive pricing and establish a reliable sourcing connection for your business needs.

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.