<ol id="33bym"></ol>

Product classification

Related products

Optical Brightener (OB-1)

Product Name: Optical Brightener (OB-1)
CAS: 1533-45-5
Purity:
Appearance: solid

Email:sales@finerchem.com

Inquiry

Product Details

Factory Supply industrial standard Optical Brightener (OB-1) 1533-45-5 In Stock

Molecular Formula:C₂₈H₁₈N₂O₂
Molecular Weight:414.463
Appearance/Colour:solid
Vapor Pressure:2.79E-12mmHg at 25°C
Melting Point:357-359 °C(lit.)
Refractive Index:1.731
Boiling Point:566.8 °C at 760 mmHg
PKA:1.45±0.10(Predicted)
Flash Point:285.1 °C
PSA：52.06000
Density:1.39 g/cm3 (25ºC)
LogP:7.47340

2,2'-(1,2-Ethenediyldi-4,1-phenylene)bisbenzoxazole(Cas 1533-45-5) Usage

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

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+

1533-45-5 Relevant articles

Production process of fluorescent whitening agent OB-1

-

Paragraph 0030; 0037; 0046-0055, (2021/03/11)

The invention relates to a production pr...

Preparation 2, the 2 [...] -(4,4 the- [...]benzoin ethenyl ) method of the double-benzoxazole

-

Paragraph 0014-0019, (2017/02/24)

The invention discloses a method for pre...

Synthesis and spectral-luminescence properties of 4,4′-di(2-oxazolyl)-stilbenes and 4,4′-di(2-oxazolyl)tolans

Vernigor,Shalaev,Luk'yanets

, p. 328 - 332 (2007/10/02)

A new method is proposed for the synthes...

Eine einfache Methode zur Herstellung von Benzoxazolen

Seha, Zdenek,Weis, Claus D

, p. 413 - 419 (2007/10/02)

The preparation of benzoxazoles by a fac...

1533-45-5 Process route

: 835-71-2
2-(4-methylphenyl)-1,3-benzoxazole

: 36422-63-6,1533-45-5
2,2'-(4,4'-distyrylphenyl)phenylenebenzobisoxazole

Conditions

Conditions	Yield
With sulfur; In 5,5-dimethyl-1,3-cyclohexadiene; at 210 - 250 ℃; Temperature; Reagent/catalyst; Solvent;	93%
Multi-step reaction with 2 steps 1: 91 percent / N-bromosuccinimide/azobisisobutyronitrile / CCl₄ / 3 h / Heating 2: 92 percent / t-BuOK / dimethylsulfoxide / 1 h / 20 °C With N-Bromosuccinimide; 2,2'-azobis(isobutyronitrile); potassium tert-butylate; In tetrachloromethane; dimethyl sulfoxide;
Multi-step reaction with 2 steps 1: 91 percent / N-bromosuccinimide/azobisisobutyronitrile / CCl₄ / 3 h / Heating 2: 7 percent / KOH / dimethylformamide / 1 h / 20 °C With potassium hydroxide; N-Bromosuccinimide; 2,2'-azobis(isobutyronitrile); In tetrachloromethane; N,N-dimethyl-formamide;
With sulfur; In 5,5-dimethyl-1,3-cyclohexadiene; at 240 ℃; for 17h; Temperature; Inert atmosphere; Large scale;

: 24239-07-4
2-(4-bromomethylphenyl)benzoxazole

: 36422-63-6,1533-45-5
2,2'-(4,4'-distyrylphenyl)phenylenebenzobisoxazole