Features Specifications:Sell Optical Brightener (Optical Whitening Agent) CBS-X C.I.351 Optical Brightener (Optical Whitening Agent) CBS-X C.I.351 Chemical name: stilbene derivative Property: CBS-X is a greenish yellow crystalline powder, soluble in water, anionic type, maximum spectrum absorption at 348-350nm C.I.Number: 351Application: Can be used as brightener for detergent, cotton, linen, silk, polyamide fiber, wool and paper. It can be added to any process of any type of detergent. Treating process:1. Detergent(powder and paste form): 0.04-0.2% 2. Liquid detergent: 0.2-0.5%