optical brightener OB 184

optical brightener OB 184

Chemical name: 2.5- bis (5- tert butyl -2- benzoxazole) thiophene
Molecular formula: C26H26SO2N2
Molecular weight: 430.5618
CAS: 7128-64-5
Properties: Pale yellow-green crystalline powder, tasteless, melting point: 196-203 C, decomposition temperature greater than 220 C, insoluble in water, soluble in alkanes, fats, mineral oils, waxes and ordinary organic solvents, the maximum absorption wavelength of 357 nm (ethanol).
Technical conditions:
Standard: HG/T 4707-2014
Appearance: light yellow green crystalline powder.
Chromatic light: bright blue light
Melting point: 196-203 C
Content: more than 99%
UV absorption: 1100-1200
Volatile: less than 0.5%
Ash: less than 0.3%
Transmittance: 450nm > 96%
Fineness: through 100 mesh
General solvent: methanol Trichloromethane
Use:
Mainly used in PVC, polystyrene, polypropylene, polyethylene, acrylonitrile / butadiene / styrene copolymer, styrene / acrylonitrile copolymer, styrene / butadiene copolymer, cellulose acetate, polyamide (PA), polymethyl methacrylate (PMMA), acrylic resin, polyester fiber (polyester) Whitening, paints, coatings and ink.
Packaging: 25kg cardboard drum packaging, in a cool, dry place to avoid light preservation.

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