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Trade name

Optical brightening agent PF-3

 Chemical name

1.2 di(5-mythyl-benziazolyl)ethylene

C.I.No.

135

CAS.No.

12224-12-3

 Molecular Formula

C₁₈H₁₄N₂O₂

 Molecular weight

290

 Appearance

 Slight yellow crystallized powder

 Assay

≥98%

 Melting point

188℃～189℃

 Applications

Applied to the whitening process of Dacron, acetic fiber, and polyamide fiber, for blends of terylene-cotton, PVC, PS, ABS, PE, PP, mylar. Dosage:0.03%～0.1%