OB

Fluorescent whitening agent OB Cas:7128-64-5 is a chemical substance with the molecular formula C26H26N2O2S. Its alias are as belows: 2,5-Bis-/5-tert.-butyl-2-benzoxazolyl -thiophene; Fluorescent Brightener OB; FLUOESCENT BRIGHTENER-OB; FBA 184; 2,5-Thiophenediylbis(5-tert-butyl-1,3-benzoxazole); Optical Brightener OB; 2,2'-thiene-2,5-diylbis(5-tert-butyl-1,3-benzoxazole). The appearance of fluorescent whitening agent OB is a light green powder, odorless, and soluble in alkanes, fats, mineral oils, paraffin, and most organic solvents. The maximum absorption value of the spectrum is 375nm (in ethanol), and the maximum emission wavelength is 435nm (in ethanol); Fluorescent whitening agent OB has good whitening effect and thermal stability, with low addition amount and wide application; The melting point is 198-203 ℃; Fluorescent whitening agent OB cas:7128-64-5 can be used for thermoplastic, polyvinyl chloride, polystyrene, polyethylene, polypropylene ABS、 Whitening of acetate fibers, paints, coatings, printing paints, etc.