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Optical brightener We are the best manufacturer with the facilities to produce optical brightener , offer whitening agent for textile industry , detergent powder and plastic industry . ****-Optical Brightener CBS(FBA**1)****- Instruction Properties: Appearance: light yellow or milk white crystalline powder Structure: a compound of diphenylethylene xenene type Solubility: soluble in water, alcohol, ether, DMF, etc. Fluorescence tone: slight greenish blue Resistance to chlorine-bleaching and oxygen-bleaching:having extremely strong resistance to chlorine-and oxygen-bleaching, and having very good whitening effect even if under strong acidic or alkalic conditions. *****-Optical brightener CXT*****- Instruction Optical brightener CXT has less solubility than VBL and *1#, it can be soluble in hot water and form about *0% solution. The solution should be used immediately when it is ready and avoid sunlight. The dosage used is 0.**0.5% in detergent industry and 0.**0.3% in dyeing industry. *****-Fluorescent brightener OB*1(FBA **3)*****- Instruction Appearance: bright yellow crystals powder Purity: *8.5%Min Melting point: ******0 Solubility: insoluble in water, but soluble in high boiling point organic solvent such as phenyl-chloride Packaging: Packaged in cardboard drums, *0kg or *5kg each Properties: Does not dissolve in water, can dissolve in such high boiling point solvents as trichlorobenzene, diphenyl ether, etc.; Because this product has high melting point and strong stability, so it has very good heat resistance; Because this product's hydrophobic nature, so it has good light fastness; and for it has strong fluores