OPTICAL BRIGHTENER ER C. I. 199 CAS 13001-39-3 Fluorescent Brightener 199
C.I.Number: 199 Chemical name: 1.4-Bis-o-cyanostyryl-benzene Structure:
Formula: C24H16N2 Molecular Weight: 332 Appearance: Greenish yellow crystalline powder Melting Point: 226 - 230 Purity: 99.0%(min) APPLICATION: Mainly be used as whitening agent for polyester fiber, as well raw material of making paste form brightening agent in textile dyeing. PROPERTY: With strong fluorescence, high whitening performance and excellent fastness to sublimation.