ChemicalBook CAS DataBase List 1533-45-5

1533-45-5

Name	2,2'-(1,2-Ethenediyldi-4,1-phenylene)bisbenzoxazole
CAS	1533-45-5
EINECS(EC#)	216-245-3
Molecular Formula	C28H18N2O2
MDL Number	MFCD00022846
Molecular Weight	414.45
MOL File	1533-45-5.mol

Synonyms

2,2'-(1,2-ETHENEDIYLDI-4,1-PHENYLENE)BISBENZOXAZOLE 2,2'-(vinylenedi-p-phenylene)bisbenzoxazole 4,4'-BIS(2-BENZOXAZOLYL)STILBENE 2,2’-(1,2-ethenediyldi-4,1-phenylene)bis-benzoxazol fluorescentbrightener393 Fluorescent Brightener OB-1 Optical Brightening Agent OB-1 C. I. 393 OpticalBrighteningAgentOB-1C.I. Benzoxazole, 2,2-(1,2-ethenediyldi-4,1-phenylene)bis- 44BIS2BENZOXAZOYLSTILBENE 2,2′-(Vinylendi-p-phenylen)bisbenzoxazol 4,4-BIS(2-BENZOXAZOLYL)STLLBENE Fluorescent brightening agent 393 (C.I. 40674) Fluorescent Whitening Agent OB-1 2-[4-[(E)-2-[4-(1,3-Benzoxazol-2-yl)phenyl]ethenyl]phenyl]-1,3-benzoxazole 2,2'-(Stilbene-4,4'-diyl)bis(benzoxazole) 2,2'-[1,2-Ethenediylbis(4,1-phenylene)]bisbenzoxazole 4,4'-Bis(benzoxazol-2-yl)stilbene 4,4'-Di(benzoxazole-2-yl)stilbene optical brightener OB-1

Chemical Properties

Appearance	solid
Melting point	>300 °C(lit.)
Boiling point	533.34°C (rough estimate)
density	1.2151 (rough estimate)
vapor pressure	0Pa at 25℃
refractive index	1.5800 (estimate)
storage temp.	Sealed in dry,Room Temperature
solubility	DMSO (Slightly, Heated)
form	Solid
pka	1.45±0.10(Predicted)
color	Yellow
Stability:	Stable. Incompatible with strong oxidizing agents.
Water Solubility	10μg/L at 25℃
InChIKey	ORACIQIJMCYPHQ-KTKRTIGZSA-N
LogP	5.499 at 25℃
CAS DataBase Reference	1533-45-5(CAS DataBase Reference)
EPA Substance Registry System	1533-45-5(EPA Substance)

Safety Data

Hazard Codes	Xi
Risk Statements	R36/37/38:Irritating to eyes, respiratory system and skin . less more
Safety Statements	S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice . S37/39:Wear suitable gloves and eye/face protection . S24/25:Avoid contact with skin and eyes . less more
WGK Germany	1
HS Code	29349990

Raw materials And Preparation Products

Hazard Information

Description

Optical brightener OB-1 also called fluorescent brightener OB-1, optical brightener agent OB-1, OB-1 has the highest melting point among the optical brighteners and is also the most widely applicable and the most sold brightener. Optical brighteners OB-1 have two appearance colors, yellow and green. Worldwide use it for all kinds of plastics, or make masterbatches, then the optical brightener masterbatches and compounds are used in the plastics industry.
2,2'-(1,2-Ethenediyldi-4,1-phenylene)bisbenzoxazole

2,2'-(1,2-Ethenediyldi-4,1-phenylene)bisbenzoxazole

Chemical Properties

solid

Uses

4,4′-Bis(2-benzoxazolyl)stilbene (BBS) is suitable for use in the preparation of poly(propylene) (PP) films containing different concentrations of BBS. BBS may be employed as a viscosity-sensitive fluorophore to investigate the curing parameters in fabrication of UV-cured automotive organic protective coatings. BBS may be used in the preparation of polymeric film sensors based on excimer luminescence and responsive to both mechanical and temperature stress, by its dispersion into a thermoplastic aliphatic biodegradable polyester [poly(1,4-butylene succinate).

General Description

4,4′-Bis(2-benzoxazolyl)stilbene (BBS) is reported to exhibit consistently high absolute fluorescence quantum yields and a monoexponential lifetime in solutions. The photophysics of BBS dispersed in poly(propylene) (PP) films has been investigated. BBS is reported as a food-grade dye. BBS is also reported as excimer-forming, photoluminescent chromophore.

Flammability and Explosibility

Notclassified

Properties and Applications

TEST ITEMS	SPECIFICATION
APPEARANCE	BRIGHT YELLOW CRYSTALS POWDER
SHADE	GREENISH
METLING POINT	355-360 ° C
PURITY	98.5% min
FINENESS	300 mesh min

Material Safety Data Sheet(MSDS)

Spectrum Detail

Well-known Reagent Company Product Information

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