Basic information Safety Supplier Related
ChemicalBook >  Product Catalog >  Catalyst and Auxiliary >  Fluorescent brightener >  Optical brightener OB-1

Optical brightener OB-1

Basic information Safety Supplier Related

Optical brightener OB-1 Basic information

Product Name:
Optical brightener OB-1
Synonyms:
  • 4,4'-BIS(2-BENZOXAZOLYL)STILBENE
  • 2,2'-(1,2-ETHENEDIYLDI-4,1-PHENYLENE)BISBENZOXAZOLE
  • 2,2'-(vinylenedi-p-phenylene)bisbenzoxazole
  • 2,2’-(1,2-ethenediyldi-4,1-phenylene)bis-benzoxazol
  • OB-C
  • Fluorescent Brightener OB-1 C.I. 393
  • 1,2-Bis(4-(benzo[d]oxazol-2-yl)phenyl)ethene
  • ptical Brightening Agent OB-1
CAS:
1533-45-5
MF:
C28H18N2O2
MW:
414.45
EINECS:
216-245-3
Product Categories:
  • Industrial/Fine Chemicals
  • Building Blocks
  • Stilbenes
  • Heterocyclic Building Blocks
  • Oxazoles
  • brightener
  • 1533-45-5
Mol File:
1533-45-5.mol
More
Less

Optical brightener OB-1 Chemical Properties

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
Water Solubility 
10μg/L at 25℃
Stability:
Stable. Incompatible with strong oxidizing agents.
InChIKey
ORACIQIJMCYPHQ-KTKRTIGZSA-N
LogP
5.499 at 25℃
CAS DataBase Reference
1533-45-5(CAS DataBase Reference)
EPA Substance Registry System
Benzoxazole, 2,2'-(1,2-ethenediyldi-4,1-phenylene)bis- (1533-45-5)
More
Less

Safety Information

Hazard Codes 
Xi
Risk Statements 
36/37/38
Safety Statements 
26-37/39-24/25
WGK Germany 
1
HS Code 
29349990

MSDS

More
Less

Optical brightener OB-1 Usage And Synthesis

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.

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

Not classified

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

Optical brightener OB-1 Preparation Products And Raw materials

Raw materials

Optical brightener OB-1Supplier

Shanghai Harvest Chemical Industrial Co., Ltd. Gold
Tel
21-31038972 15721252604
Email
ammyzuo@harvest-chem.com
BEIJING ODYSSEY CHEMICALS CO.,LTD Gold
Tel
10-88018188-315 17502279376
Email
kallisto@bj-odyssey.com
Tianjin Zhongxin Chemtech Co., Ltd.
Tel
022-66880623
Email
sales@tjzxchem.com
J & K SCIENTIFIC LTD.
Tel
010-82848833 400-666-7788
Email
jkinfo@jkchemical.com
Meryer (Shanghai) Chemical Technology Co., Ltd.
Tel
021-61259108 18621169109
Email
market03@meryer.com