Optical Brightening Agent SWNMain Chemical Composition: Coumarin Derivatives Specification:
Appearance: Off-white powder
Content: ≥99%
Melting Point: 69.5~71.0ºC
Moisture: ≤0.5%C.I.Number: 140Property: 1.multipurpose brightener with excellent whiteness, soluble in ethanol but insoluble in water.2.having properties of good solubility and compatibility.Application: mainly be used as brightener of H-PVC,S-PVC,wool, natural silk, polyamide fiber and acrylic fiber. Also can be used for detergent. This product is a common laser dyestuff.Process: 1.H-PVC:0.03-0.1%
S-PVC:0.02-0.08@2.Soluble with ethanol before adding.wool: 0.05-0.35%
polyamide fiber: 0.05-0.3%natural silk: 0.05-0.4%
acrylic fiber: 0.05-0.8%3.detergent:0.001-0.005%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.