fluorescent whitening agent JER-2 is used whitening and brightening polyester (ep) fiber, carbonic ether, polyethylene, polyprop fluorescent whitening agent JER-2appearance : light yellow powder Purity : ≥ 99% Melting ... temperature resistant, whiteness, low cost Use: JER 2 fluorescent whitening agent powder is suitable for whitening and brightening polyester (ep) fiber, carbonic ether, polyethylene ...