Optical Brightener OB-1

C.I. Optical Brightening Agent 393

Cas No. 1533-45-5

Equivalent: Uvitex ERT (Ciba)

1. Properties:

1). Appearance: Bright Yellow Crystalline Powder

2). Chemical Structure: A Compound Of Diphenylethylene

   Bisbenzoxazole Type.

3). Melting Point: 357-359℃

4). Solubility: Insoluble in water, but soluble in high boiling point organic solvents such as phenyl-chloride.

5). Others: Excellent fastness to heat and light due to its high boiling point, also good fastness to chlorine-bleaching.

1. Applications:

It is especially suitable for shaping various kinds of plastics and their products under high temperature. It has an excellent whitening effect on polyester-cotton blend fabric. It can be used for whitening polyester. It is similar to Whitex Xnk, Eastobrite OB-1 made in foreign country.

1. Directions For Use And Dosage:

The dosage should be 0.01-0.05% on weight of plastic. Mix optical brightener ert with plastic granulars thoroughly before shaping of plastics or drawing-spinning of polyester.

1. Specifications:

Appearance: Bright Yellow Crystalline Powder

Purity: 99% Min.

Melting Point: 357-359℃

1. Packaging And Storing:

Packing In 25Kg/50Kg Carton Drums. Stored In Dry And Ventilated Place.