Optical Brightener for detergent CBS-X (OBA 351),most excellent OBA for detergent.Used in ... Brightener for detergent CBS-X (OBA 351) CAS NO: 27344-41-8 Appearance: light yellow or milk white crystals powder ,granule,slurrySolubility ... bluePackaging: Packaged in cardboard drums, 25kg eachProperties:Fluorescence Brightener CBS-X is bis-cinnamene monobiphenyl type optical fluorescence brightener, it is ...