Optical Brightener Agent OB

It is used for whitening and brightening of polyvinyl chloride, polystyrene, polyethylene polypropylene, thermoplastics, ABS,cellulose acetate, coatings, paints, and printing inks.




Chemical name: 2.5-bis (5-terbuty1-2-benzoxazolyl) thiophene

 
Properties:
1, appearance: light green or milky white powder, tasteless 

2, good transmittance, suitable for transparent plastic products, paint ink industry 

3, low toxicity, meet the requirements of environmental protection, light color, pure color, moderate price. 

4, Solubility: insoluble in water, soluble in alkane, mineral oil, usually organic solvent.


Specification:

Item

Value

CAS.NO

7128-64-5

Molecular formula

C26H26N2O2S

Formula weight

430.56

 C.I.NO

184

Appearance

light yellow or green powder

Purity

≥99.0%

Melting point

201-203℃

light transmittance

450nm≥96%    500nm≥97%


Application/Uses:
• Coatings 
• Flexible PVC 
• Man-made fibers  
• Plastics
• Polyethylene 
• Printing Inks 


 



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