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Optical Brightening Agent OB

Inquiry
  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: 7128-64-5 2,5-Di(5-tert-butylbenzoxazol-2-yl)thiophene
  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
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