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Fluorescent Brightener OB-1 is a kind of high-efficiency fluorescent whitening agent for polyester fiber. It is also widely used in plastics such as ABS, PS, HIPS, PA, PC, PP, EVA and rigid PVC. 

Characteristics: Excellent Whitening effect and thermal stability, very little amount of addition.

Product Details:                                                

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

Synonyms: 

OpticalBrighteningAgentOB-1C.I.;

fluorescentbrightener393;

44BIS2BENZOXAZOYLSTILBENE;

4.4'-Bis-<2-benzoxazolyl>-stilben;

4,4'-Bis(2-benzoxazolyl)stilbene;

Fluorescent Brightener OB-1

CAS: 1533-45-5                                     EINECS: 216-245-3 MF: C28H18N2O2 MW: 414.45500 MP: >300 °C(lit.) BP: 566.8?C at 760 mmHg FP: 285.1?C Density: 1.39 g/cm3 (25?C) Purity: 98.5% min.

Appearance: solid powder

Stability: Stable. Incompatible with strong oxidizing agents.

Package: 5g, 25g, 100g, 500g, 1kg, 25kg

Storage Condition: Keep container closed when not in use. Store in a cool, dry, well-ventilated area away from incompatible substances.

Application: Used for whitening polyester stock solution, especially suitable for whitening of polyester fiber, whitening of polyester and cotton and other blended fabrics, and whitening of plastic products

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