Optical brightener ER-1 C.I. NO.199 for textile whitening manufacturer
Optical brightener ER-2 C.I. NO.199 for textile whitening manufacturer 1. A good whitening effect, thermal stability, fluorescent shade of white. 2. The best compatibility with plastic, easy migration, precipitation. 1,4bis(2-cyano styyl)benzenoe...
Optical Brightening Agent ER-II
Optical brightening agent ER-II (O/P) CAS: 13001-38-2 C.I.No:199 Bluish color shade with high whitening brightening effect and excellent fastness to sublimation. Appearance:slight yellow powder Melting Point:183~185Degree C Purity:≥99.5% Maximum UV...