Optical Brightener ER-II CAS 13001-38-2

Optical Brightener ER-II is especially suitable for brightening and brightening polyester and its blended fabrics and acetate fibers. Optical Brightener ER-II is a stilbene fluorescent brightener with a pale yellow powder appearance and blue-purple fluorescence. With good low temperature coloring ability, suitable for immersion dyeing, pad dyeing.