CAS No: 1533-45-5, Chemical Name: Fluorescent Brightener 393
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1533-45-5 Fluorescent Brightener 393

product Name Fluorescent Brightener 393
Synonyms 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; Fluorescent Whitening 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); Optical Brightening Agent OB-1; Optical Brightner OB-1; ptical Brightening Agent OB-1; 4,4-Bis(2-Benzoxazolyl) Stilbene;
Molecular Formula C28H18N2O2
Molecular Weight 414.4547
InChI InChI=1/C28H18N2O2/c1-3-7-25-23(5-1)29-27(31-25)21-15-11-19(12-16-21)9-10-20-13-17-22(18-14-20)28-30-24-6-2-4-8-26(24)32-28/h1-18H/b10-9+
CAS Registry Number 1533-45-5
EINECS 216-245-3
Molecular Structure 1533-45-5 Fluorescent Brightener 393
Density 1.281g/cm3
Melting point 357-359℃
Boiling point 566.8°C at 760 mmHg
Refractive index 1.731
Flash point 285.1°C
Vapour Pressur 2.79E-12mmHg at 25°C
Hazard Symbols
Risk Codes
Safety Description S24/25:;