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 creasing whiteness of polyester 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.
ainly used in increasing whiteness of original polyester liquid , especially for creasing whiteness of polyester fibre, cotton, fabric blend ,and also plastic products.