optical brightener OB-1 393

optical brightener OB-1 393

Chemical name: two styrene based bis oxazole
Molecular formula: C28H18N2O2
Molecular weight: 414.4547
CAS: 1533-45-5
Properties: bright yellow-green crystalline powder, insoluble in water, odorless, stable performance; maximum absorption spectrum wavelength is 374 nm, with strong fluorescence, emission wavelength is 434 nm.
Technical conditions:
Standard: HG/T 3703-2016
Appearance: bright yellow green crystalline powder.
Chromatic light: blue or blue violet light.
Melting point: greater than or equal to 357 degrees centigrade.
Content: more than 98%
Fineness: more than 200 mesh.
Ultraviolet absorption: more than 2000
Volatile: less than 1%
Ash: less than 1%
Use:
1, suitable for polyester fiber, nylon fiber, polypropylene fiber and other chemical fiber whitening.
2. Suitable for whitening and brightening polypropylene plastics, rigid PVC, ABS, EVA, polystyrene, polycarbonate, etc.
3. It is suitable for the polymerization of polyester and nylon.
4. It is especially suitable for whitening of plastic products molded at high temperature.
Packaging: 25kg cardboard drum packaging, in a cool, dry place to avoid light preservation.

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