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Fluorescent Whitening Agent OB-1

Product Name: Fluorescent Whitening Agent OB-1

C.I. No.: FBA 393

Physical Form: bright yellow crystalline powder




Melting Point(℃): 357-359

Volatile content:(%):0.5Max

Ash content(%):0.1Max


Solubility:Insoluble in water,but soluble in high boiling point organic solvents such as phenyl-chloride. 
Structure:a compound of diphenylethylene bisbenzoxazole type


FWA OB-1 is especially suitable for shaping various kinds of plastics and their products under high temperature.It has an extra ideal whitening effect on polyester-cotton blend fabric.It can be used for whitening polyester melt.This whitening agent is similar to Whitex SNK,Uvitex ERT and Eastobrite OB-1 made in foreign country.

Directions for use and dosage:

The dosage should be 0.01-0.05% on weight of plastic or polyester granules.Mix the materials thoroughly before shaping of the plastic products or drawin-spinning of polyester fibers.


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