Optical Brightening Agent OB

• Post Date:

  Jul 16,2013

• Expiry Date:

  Aug 15,2013

• Detailed Description:

  Cas No. :7128-64-5 Quantity: 1000000
  Price:23 USD Kilograms
  OB is a high molecular weight optical brightener of the thiophenediyl benzoxazole class, suitable for the optical brightener of polymers at all stage of processing.
  
  Typical Properties
  Chemical Name: 2,2-(2,5-Thiophenediyl) Bis[5-(1,1-dimethylethy)]
  Benzoxazole
  Molecular Formula: C27H27O2N2S
  Molecular Weight: 430
  CAS No.: 7128-64-5
  C.I.: 184
  
  Specifications:
  Appearance: Yellowish or yellowish green crystal powder
  Assay: 99% min.
  Melting Point: 196-203
  Ash: 0.3% max.
  Volatile Content: 0.3%max.
  Particle size: 200 meshes
  Max. Absorption Wavelength: 375nm(in ethanol)
  
  
  Application (in each 100kg polymer):
  PVC: White 0.01-0.05 (10g-50g)
  Transparent 0.0001-0.001% (0.1g-1g)
  PS: White 0.001% (1g)
  Transparent 0.0001-0.001% (0.1g-1g)
  ABS: Primitive color 0.01-0.05% (10g-50g)
  (effectively eliminate the intrinsic yellow color in ABS)
  White 0.01-0.05% (10g-50g)
  PE, PP: Achromaticity 0.0005-0.001% (0.5g-1g)
  White 0.005-0.05% (5g-50g)
  Other Plastics: Refer to the directions given above.
  

• CAS Registry Number:

  7128-64-5

• Synonyms:

  ;Fluorescent Brightener OB;Fluorescent brightening agent 184;Fluorescent Whitening Agent OB;Optical Brightening Agent OB;Fluorescent Brightener 184;C.I. 184;Fluorescent Brightener OB-4;Fluorescent brightening agent 184;Optical Brightner OB;BBOT;C.I. Fluorescent Brightener 362;Uvitex 2B;TINOPAL CBS-X;UVITEX OB;UVITEX(R) 2B;TOSLAB 644820;2,5-BIS(5'-TERT-BUTYL-2'-BENZOXAZOLYL)THIOPHENE;2,5-BIS(5-TERT-BUTYL-2-BENZOXAZOLYL)THIOPHENE;2,5-BIS(5-TERT-BUTYL-BENZOXAZOL-2-YL)THIOPHENE;2,5-BIS(5-TERT-BUTYLBENZOXAZOYL)-2-THIOPHENE;2,5-BIS(5-T-BUTYL-2-BENZOXAZOLYL)THIOPHENE;2,5-Bis(5-tert-butyl-2-benzoxazolyl)thiophene;

• Molecular Formula:

  C₂₆H₂₆N₂O₂S

• Molecular Weight:

  430.5618

• Molecular Structure:

  

• Safety Description:

  S24/25:;
  

• Company:

  China Best Gain Science Technology Co Ltd     [ China ]        

• Contact:

  Hellen

• Tel:

  86-22-83280517-17

• Fax:

  86-22-83280392

• Email:

  tjbgt@bgtcn.com