Basic information
CAS
7128-64-5;12224-40-7;52232-33-4
EINECS
230-426-4
Molecular Formula
C26H26N2O2S
Molecular Weight
430.5618
English Name
2,5-Di(5-tert-butylbenzoxazol-2-yl)thiophene
Synonyms
Fluorescent Brightener OB, Fluorescent brightening agent 184, Fluorescent Whitening Agent OB, Optical Brightening Agent OB, Fluorescent Brightener 184, C.I. 184, Fluorescent Brightener OB-4, Fluorescent brightening agent 184, Optical Brightner OB, BBOT, C.I. Fluorescent Brightener 362, Uvitex 2B, TINOPAL CBS-X, UVITEX OB, UVITEX(R) 2B, TOSLAB 644820, 2,5-BIS(5'-TERT-BUTYL-2'-BENZOXAZOLYL)THIOPHENE, 2,5-BIS(5-TERT-BUTYL-2-BENZOXAZOLYL)THIOPHENE, 2,5-BIS(5-TERT-BUTYL-BENZOXAZOL-2-YL)THIOPHENE, 2,5-BIS(5-TERT-BUTYLBENZOXAZOYL)-2-THIOPHENE, 2,5-BIS(5-T-BUTYL-2-BENZOXAZOLYL)THIOPHENE, 2,5-Bis(5-tert-butyl-2-benzoxazolyl)thiophene,
Physical and Chemical Properties
Density
1.185g/cm3
Refractive index
1.617
Melting point
196-202℃
Boiling point
531.2°C at 760 mmHg
Flash point
275.1°C
Vapour Pressure
7.83E-11mmHg at 25°C
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