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Optical Brightener OB

Inquiry
  Post Date: Dec 16,2014
  Expiry Date: Dec 16,2015
  Detailed Description: Cas No. :7128-64-5 Quantity: 1Metric Tons
Specs:light yellow or milk white powder
Price:3.8-4.0 USD Metric Tons
Payment Method: L/C, T/T
1.Chemical name: 2,5-bis(5-tertbutyl-2-benzoxazolyl)thiophene
Molecular formula: C26H26N2O2S (As International relative Atom Mass 1997)
Molecular weight: 430.2
C.I.184
2.Specifications:
   Item
Indices
Appearance
light yellow or milk white powder
Purity
≥ 99.8 %
Melting point
201-202
Ash
≤ 0.1
Volatile content
≤ 0.4%
3.    performance Features：
1.Pale green powder, tasteless, dissolvable in paraffin, fat, olefin and most organic solvents. Its spectrum can absorb the maximum wavelength of 375nm with the maximum transmitted length of 435nm(in ethanol).
2. Good brightening effects and weathering resistance requires a small quantity but can be widely used
4.Scope of Application：
OB is widely used in the brightening of thermoplastics as PVC, PE, PP, PS, ABS, PMMA, POM and thermosetting plastic, polyester fiber, paint, ink and coating.
5.Aplication Methods：
Polyvinyl chloride brightening: 0.01～0.05%
increase radiance: 0.0001～0.001%
Polystyrene 0.0001～0.05%
ABS: 0.01～0.05%
Polyolefin colorless matrix: 0.0005～0.001%
white matrix: 0.005～0.05%
6.Packing Storage：Packed in 25kg×1 tanks, 5kg×2 paper boxes or 1kg(iron cases)×12 paper boxes at cool and dry places to be protected from light.

  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: Zhejiang Shengzhou Wanshida Chemical Co., Ltd.     [ China ]        
  Contact: david He
  Tel: 0575-83126808
  Fax: 0575-83371088
  Email: zjmansda@gmail.com
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