Product Name: Optical Brightener OB-1

Chemical Name: 2,2'-(1,2-Ethenediyldi-4,1-phenylene)Bisbenzoxazole

CAS No: 1533-45-5

Molecular Formula: C₂₈H₁₈N₂O₂

Molecular Weight: 414.46

Chemical Structure:

Descriptions:

Optical brightener OB-1 is a excellent diphenylethylene bisbenzoxazole type compound. of benzoxazole compound. It is odorless, hard to dissolve in water and has stable capability.It also has good resistance to heat,sunlight,chlorine bleaching and migration. It dissolves in paraffin, fat, mineral oil, wax and common organic solvents. It can be used for whitening thermoplastic plastics, PVC, PA, PS, PE, PP, ABS, EVA, Acetate fiber, paints, coatings, printing ink etc. It also has an ideal effect on polyester fibers as well as polyester-cotton fibers.

Specifications:

Appearance: yellowish green powder

Purity, %: 99min

Odor: no special smell

Melting Point,DEG C: 353-359

Ash, %: 0.3 max

Volatile Content, %: 0.5 max

UV Absorption Wavelength (ethanol), nm: 374 max

Optical Emitting Wavelength,nm: 434 max

Applications:

It is widely used in PVC, PA, PS, PE, PP, ABS, EVA and other plastics. it also has an ideal whitening effect on polyester fibers as well as polyester-cotton fibers.

Process method:

Thoroughly disperse Optical Brightener OB-1 into polymers, Please kindly note that we must adjust the dosage when we use UV Absorption Agent in the polymers.

Dosage:

For transparent products: 0.0025-0.005%

For opaque products: 0.01-0.03%

Packing: 25kg cardboard drum

Transportation & Storage: Store in cool, dry and ventilated place, Should avoid direct sunlight. Transport against non-dangerous chemicals regulation.

Shelf life: 2 years