Fluorescent brightener KCB


Chemical name:
  • 4.4-bis(benzoxazolyl-2-yl)naphth-alene
Structural formula:

Molecular formula:
  • C24H14O2N2
Molecular weight:
  • 362
  • Its appearance is of yellow green powder, bright-colored blue with white light. Its melting point is 212°C. It is unsolvde in water. The maximum length of absorbing spectrum.
Technical conditions:
  • Appearance: yellow green powder
  • Chromatic light: Bright-colored blue with white light(approximate to standard sample)
  • Melting point: 210-212°C
  • Solid content: ≥99.5%
  • Fineness: Through 100 meshes
  • Brightener KCB is mainly used in bright ening synthetic fibre and plastics, may be used in brightening plastic films materials of molding press into shape materials of injection mold, may be also used in brightening polyester fiber, dye and natural paint.
  • It is packed in bicorrugated paper box with a liner of plastic bag. The net weight of each bag is 10kg. The package may be either big or small according to the requirements of customer.


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