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Optical Brightener Ob-1

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Optical Brightener OB-1 / CAS : 1533-45-5

Appearance Yellow crystal UN -
HS 3204200000 DG Class -
Synonyms Fluorescent Brightener Ob-1; Fluorescent Brightener 393; 2,2'-(1,2-Ethenediyldi-4,1-Phenylene)Bisbenzoxazole; 1,2-Bis(4-(Benzo[D]Oxazol-2-Yl)Phenyl)Ethene; 4,4'-Bis(2-Benzoxazolyl)Stilbene; 2,2'-(Vinylenedi-P-Phenylene)Bisbenzoxazole; 2-[4-[(E)-2-[4-(1,3-Benzoxazol-2-Yl)Phenyl]Ethenyl]Phenyl]-1,3-Benzoxazole; (E)-1,2-Bis(4-(Benzo[D]Oxazol-2-Yl)Phenyl)Ethene; 2,2'-(Vinylenedi-4-Phenylene)Bis(Benzoxazole)
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Properties

Summary

Formula
C28H18N2O2
Molecular Mass
414.45500
Exact Mass
414.13700
PSA
52.06000
Logp
7.47340
IUPAC
2-[4-[(E)-2-[4-(1,3-benzoxazol-2-yl)phenyl]ethenyl]phenyl]-1,3-benzoxazole
SMILES
C1=CC=C2C(=C1)N=C(O2)C3=CC=C(C=C3)C=CC4=CC=C(C=C4)C5=NC6=CC=CC=C6O5

Attribute classification

Matter Classification
organic
Category
Auxiliary > Fluorescent Brightener

Chemical and Physical Properties

Melting Point
>300 °C(lit.)
Density
1.39 g/cm3
Boiling Point
566.8 ºC
Flash Point
285.1 ºC
Appearance
Yellow crystal
Acidity and Basicity
neutral

Export information

HS Code
3204200000
Export Rebate
13%
Risk Code
R36/37/38
Safety Label
Xi

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