OPTICAL BRIGHTENER OB-1

C.I.393 CAS：1533-45-5

CHEMICAL NAME: 2,2-(1,2-Ethenediyldi-4,1-phenylene)bisbenzoxazole

MOLECULAR FORMULA: C28H18N2O2

MOLECULAR WEIGHT: 414.4 (As International relative Atom Mass 1997)

Max UV ABSORPTION WAVWLENGHTH: 374 nm (ethanol)

SPECIFICATIONS:

Item	Indices
Appearance	Yellowish green powder
Purity	≥ 98.5%
Smell	No special smell
Melting point	353-359℃
Ash	≤ 0.5%
Volatile content	≤ 0.5%

PROPERTY:

Optical Brightener OB-1 is a excellent diphenylethylene bisbenzoxazole type compound. It is unsoluble in water and has stable capablity, also it has good resistance to heat, sunlight, chlorine bleaching and migration. It owns especially high temperature tolrence, suitable for shaping various kinds of plastics and their products under high temperature.It has an extra ideal whitening effect on polyester fibers as well as polyester fiber-containing fabrics including polyester-cotton blend fabric It can be used to whiten various kinds of plastics such as ABS, PS, HIPS, PA, PC, PP, EVA and rigid PVC. With addition of Optical Brightener OB-1,polyamide fiber, nylon and polyester have significantly good whiteness. Mixed with this product, recycling polyester waste material, bottle material and slice flake will have a higher whiteness than before, different, recycling materials will have better similar color.

USEAGE:

Optical Brightener OB-1 should be thoroughly dispered in the polymers. When any ultral-violet absorption agent is added, the optimal dosage of optical brightener OB-1 will be adjusted accordingly.

DOSAGE:

For transparent 0.0025-0.005% opaque ≤ 0.01-0.03%

PACKAGE:

Packaged in iron drum or cardboard barrels. Net weight is 25 kg or 50 kg each.

STORAGE: Should be stored in cool and dry place.

SHANGHAI JECA COLOR CO.,LTD.

OB-1