Fluorescent Whitening Agent OB-1
Product name: Fluorescent Brightener 393
CAS NO: 1533-45-5
Molecular weight: 414.4547
EC NO: 216-245-3
Molecular Formula: C28H18N2O2
Alias: Fluorescent Brightener OB-1; FBA393;2,2'-(4.4'-diphenol vinyl)di-henzoxazol ; 2,2'-(1,2-Ethenediyldi-4,1-phenylene)bisbenzoxazole; FBA 393; 4,4'-bis(benzoxazol-2-yl)stilbene; Optical Brightener OB-1; C.I. 393; Fluorescent whtening agent OB-1; ; 2,2'-(ethene-1,2-diyldibenzene-4,1-diyl)bis(1,3-benzoxazole); 2,2'-[(E)-ethene-1,2-diyldibenzene-4,1-diyl]bis(1,3-benzoxazole)
Structural Formula: 
Appearance: bright yellow crystalline powder
Assay: ≥99.0%
Melting Point: 357-359°C
Volatile Matters: ≤0.5%
Ash: ≤0.1%
Uses: This brightener is especially suitable for the p molding processing of a variety of plastics and plastic products at high temperatures; because of its excellent heat resistance, light resistance,resistance to chlorine bleaching properties,it offers good effects to the whitening of polyester fibers and polyester and cotton and other fiber blended fabrics, and can be used for the whitening of polyester dope, similar products are: Whitex SNK, Uvitex ERT, Eastobrite OB-1.
