Product Name: Optical Brightener OB

Chemical Name: 2,5-bis(5-terbutyl-2-benzoxazolyl) thiophene

CAS No: 7128-64-5

Molecular Formula: C₂₆H₂₆N₂O₂S

Molecular Weight: 430

Chemical Structure:

Descriptions:

Optical brightener OB is a kind of benzoxazole compound, It is odorless, hard to dissolve in water. 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, Acetate fiber, paints, coatings, printing ink etc. It can be added at any stage in the process of whitening the polymers and can give the finished products a bright bluish white glaze.

Specifications:

Appearance: yellow powder

Max. absorption wave: 375 nm

Max. optic emitting wave: 435 nm

Purity: 99% min.

Ash: 0.2% max.

Melting Point: 198-200C

Applications:

It is widely used in PVC, PA, PS, PE, PP, ABS and other plastics. it can also be used in ink industry.

Process method:

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

Dosage:

PVC: 0.01-0.05% (white), 0.001-0.01% (Transparent)

PS: 0.001% (white), 0.001-0.01% (Transparent)

ABS: 0.01-0.05% (white), 0.01-0.05% (Transparent)

PE/PP: 0.005-0.05% (white), 0.0005-0.001% (Transparent)

Packing: 25kg drum

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

Shelf life: 2 years.