Whitening Agent OB

Fluorescent whitening agent OB
Chemical name: 2.5- bis (5- tert butyl -2- benzo thiophene)
Structure:
CAS number: 7128-64-5
EC number: 7128-64-5
Molecular formula: C26H26N2O2SH9C4
Molecular weight: 430
Properties: This product is a bright yellow crystalline powder, tasteless. Melting point 196-203 DEG C, decomposition temperature greater than 220 DEG C. insoluble in water, soluble in alkane hydrocarbons Kuang oil wax and usual organic solvents. Fluorescent colors to blue light, the maximum absorption wavelength is 375nm (ethanol).
Technical condition:
Appearance: bright yellow green crystal powder
Color: bright blue fluorescence (similar to standard)
Melting point: 196-203 C
Solid content: 99.5%
Fineness: through 100 mesh
Application: mainly used in thermoplastic plastics, polyvinyl chloride, polyethylene, polypropylene, polystyrene, acrylonitrile / butadiene / styrene copolymer, styrene / acrylonitrile copolymer, styrene / butadiene copolymer, cellulose acetate, polyamide, poly methyl methacrylate, acrylic resin, polyester fiber (PET), paints, coatings, ink whitening.
Packing: double corrugated cartons, lined with plastic bag, net weight per box 10KG, or according to user requirements for packaging.