Optical Brightening Agent Om 

Chemical name: 4,4'-bis(2,3'-cyano-phenlene)-benzene
Structure:
Formula: C₂₄H₁₆N₂
Molecular Weight: 332
C.I. Number: 199: 4
Appearance: slight yellow powder
Melting Point: 181~184°C
Purity: ≥98.0%
Application: mainly be used as whitening agent for polyester fiber, as well the raw material of making paste form brightening agent in textile dyeing.
Property: bluish color shade with strong fluorescence, high whitening performance and excellent fastness to sublimation.
Maximum UV Absorption Spectrum: 369nm
Packing: 20kg per fiber drum