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Optical Brightener Ob

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Optical Brightener OB / CAS : 7128-64-5

Appearance Bright yellow powder UN 0.0
HS 32042000 DG Class 0.0
Synonyms 2,5-Bis(5-(Tert-Butyl)Benzo[D]Oxazol-2-Yl)Thiophene; Fluorescent Brightener Ob; Fluorescent Brightener 184; Fluoescent Brightener-Ob; Fba 184; 2,5-Thiophenediylbis(5-Tert-Butyl-1,3-Benzoxazole); 2,5-Bis(5-Tert-Butyl-2-Benzoxazolyl)Thiophene; 2,5-Bis(5-Tert-Butyl-2-Benzoxazolyl)Thiophene (Purified By Sublimation); 2,5-Bis -(5-T-Butylbenzoxazolyl- [2'])-Thiophene (Bbot); 2,5-Bis(5-(Tert-Butyl)Benzo-[D]Oxazol-2-Yl)Thiophene; 2,5-Bis(5-Tert-Butylbenzooxazol-2-Yl)Thiophene
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Properties

Summary

Formula
C26H26N2O2S
Molecular Mass
430.56200
Exact Mass
430.17100
PSA
80.30000
Logp
7.95950
IUPAC
5-tert-butyl-2-[5-(5-tert-butyl-1,3-benzoxazol-2-yl)thiophen-2-yl]-1,3-benzoxazole
SMILES
CC(C)(C)C1=CC2=C(C=C1)OC(=N2)C3=CC=C(S3)C4=NC5=C(O4)C=CC(=C5)C(C)(C)C

Attribute classification

Matter Classification
organic
Category
Auxiliary > Fluorescent Brightener

Chemical and Physical Properties

Melting Point
199-201 °C
Density
1.26
Boiling Point
531.2ºC
Flash Point
275.1ºC
Appearance
Bright yellow powder
Acidity and Basicity
acidness

Export information

HS Code
32042000
Export Rebate
13%
UN No.
0.0
DG-Class
0.0
Risk Code
R36/37/38

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