Optical Brightening Agent OB-1 (C.I.393) Chemical name: 2,2’-(4,4’-diphenol vinyl)dibenzoxazol Structural formula: Molecular formula: C28H18N2O2 Molecular weight: 414 Properties: The product is yellow crystal powder .Its melting point is 359°C,It is unsolved in water , no odor ,having stable performance and strong fluorescence, its maximum absorption spectrum wave length 374nm, the wave length transmitted by fluorescence being 434nm . Technical conditions: Appearance: yellow crystal power Melting point: ≥359°C purity: ≥98% Fineness through: 100 meshes Use: It is mainly used in increasing whiteness of original polyester liquid , especially for in creasing whiteness ofdacron fibre ,cotton , fabric blend ,and also plastic products. Package: It is packed in 20Kgs paper board bucket..It can be packed according to the requirement of the user. Note: 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.
