Optical Brightener SWN is kind of plastics additives can absorb UV light then emit visible blue light to reduce the yellowish and make the products more white.
Product Name ：Optical Brightener SWN
Main Chemical Composition:Coumarin
Appearance: Off-white powder
Melting Point: 69.5~71.0℃
1.multipurpose brightener with excellent whiteness, soluble in ethanol but insoluble in water.
2.having properties of good solubility and compatibility.
Package:25kg per fiber drum
It needs to be declared that the above data is based on our present knowledge and experience; owing to too many affecting factors, these data cannot be free from their check and test when processing and using the product.