Chemical name: 1,1-biphenyl-4,4-bis-benzoxazole
Structural formula:
C.I. NO.:
Fluorescent brightener 351
CAS NO.:38775-22-3
EC NO.:254-121-0
Molecular formula: C28H18O6S2Na2
Molecular weight: 562
Properties: The product is light yellow -green crystal powder .Its melting point is 353°C, insoluble in water, no odor ,stable property and strong fluorescence, its maximum absorption wavelength is 374nm .The fluorescence emission wavelength is 434nm.
Technical conditions:
Appearance: yellow -green crystal power
Chromatic light: bright-colored blue with white light (similar to the standard product)
Melting point 216-222°C
Content: ≥99%
Volatility: ≤0.5%
Ash content: ≤0.1%
Fineness : through 100 meshes
Use: It is an excellent optical brightener and widely used for plastic,synthetic detergent,printing,dying and man-made fibre.
Package: It is packed in 25KGS paper board drum.Or according to the requirement of the user.
