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Stilbene

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Molecular Formula: C28H18N2O2
Molecular Weight: 414.4
CAS Number:1533-45-5

Properties:
Optical brightener OB-1 is yellow crystalline solid. It is insoluble in water and odorless. Due to its excellent heat resistance nature, OB-1 has very stable performance in most polymers’ processing condition. Its maximum wavelength of absorption spectrum is 374 nm and emitting wavelength of fluorescence is 434 nm, which makes it has very strong fluorescence.
Applications:
Optical brightener OB-1 is a highly effective fluorescent whitening agent. It can be used in a variety of polymer substance, especially polyester fiber, PP fiber, polyamide fiber as well as plastic material such as PVC, ABS, EVA, PS, etc.
Specifications:
Properties

Values
Appearance: Yellow crystalline solid
Purity % Min: 98 (LC)
Melting point (DSC, °C): 359–366
Volatile Matter % Max: 0.3
Ash % Max: 0.5
Particle size mesh: 200
Packaging: 25 Kg in carton bucket lined poly bag.

 
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