Optical brightener ER-I/ER-I L (OBA 199) C.I.: 199 CAS No.: 13001-40-6 Appearance: Slight yellow greenish powder Purity: 99% Melting Point : ...Explore More
Optical brightener OB( OBA 184) CAS No. 7128-64-5 Appearance: Light yellow or milk white powder Purity: 99% min Melting point: 196-203℃ Usa ...Explore More
