glory ob optical brightener
chemical name ：2,5-bis-(5-tert-butyl-2-benzoxazolyl)thiophene
c.i. no. : fluorescent whitening agent 184【7128-64-5】
|
appearance |
light green powder |
|
melting point |
196-203 ℃ |
|
decomposition temperature |
220 ℃ |
|
maximum uv absorption wavelength |
369nm |
|
maximum emission wavelength |
435nm |
|
color |
bright blue fluorescence |
features
it has good weather resistance and high stability. it is a commonly used fluorescent whitening agent; it has passed fda certification.
purpose
mainly used in thermoplastics, polyvinyl chloride, polyethylene, polypropylene, polystyrene, acrylonitrile/butadiene/styrene copolymer, styrene/acrylonitrile copolymer materials, styrene/butadiene copolymer, cellulose acetate, polyamide, acrylic resin, polyester fiber (polyester), paint, coating��, whitening of ink.
widely used in the processing of film, injection molding and extrusion molding materials.
recommended dosage ：0.01~0.05%