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ChemicalBook >  Product Catalog >  Catalyst and Auxiliary >  Fluorescent brightener >  2,5-Bis(5-tert-butyl-2-benzoxazolyl)thiophene

2,5-Bis(5-tert-butyl-2-benzoxazolyl)thiophene

Basic information Description Sources Safety Supplier Related

2,5-Bis(5-tert-butyl-2-benzoxazolyl)thiophene Basic information

Product Name:
2,5-Bis(5-tert-butyl-2-benzoxazolyl)thiophene
Synonyms:
  • bbot150
  • Benzoxazole, 2,2'-(2,5-thiophenediyl)bis(5-tert-butyl-
  • Benzoxazole, 2,2'-(2,5-thiophenediyl)bis*5-(1,1-dimethylethyl)-
  • Benzoxazole, 2,2'-(2,5-thiophenediyl)bis[5-(1,1-dimethylethyl)-
  • LABOTEST-BB LT00053574
  • CI FLUORESCENT BRIGHTENER 362
  • DERIVATIVE OF STILBENE DISULFONIC ACID
  • BBOT
CAS:
7128-64-5
MF:
C26H26N2O2S
MW:
430.56
EINECS:
230-426-4
Product Categories:
  • brightener
  • pigments
  • Electroluminescence
  • Functional Materials
  • Organics
  • Industrial/Fine Chemicals
Mol File:
7128-64-5.mol
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2,5-Bis(5-tert-butyl-2-benzoxazolyl)thiophene Chemical Properties

Melting point:
199-201 °C(lit.)
Boiling point:
531.2±45.0 °C(Predicted)
Density 
1.26
refractive index 
1.6360 (estimate)
Flash point:
>350°C
solubility 
toluene: soluble50mg/mL
form 
powder
pka
3.03±0.10(Predicted)
Water Solubility 
Soluble in acetone and toluene. Insoluble in water.
λmax
373nm(EtOH)(lit.)
Merck 
14,1014
BRN 
631803
Stability:
Stable. Incompatible with strong oxidizing agents.
InChIKey
AIXZBGVLNVRQSS-UHFFFAOYSA-N
CAS DataBase Reference
7128-64-5(CAS DataBase Reference)
NIST Chemistry Reference
Benzoxazole, 2,2'-(2,5-thiophenediyl)bis[5-(1,1-dimethylethyl)-(7128-64-5)
EPA Substance Registry System
2,2'-(2,5-Thiophenediyl)bis[5-tert-butylbenzoxazole] (7128-64-5)
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Safety Information

Risk Statements 
36/37/38
Safety Statements 
24/25
WGK Germany 
1
RTECS 
DM4888332
TSCA 
Yes
HS Code 
29349990
Toxicity
LD50 orl-rat: >10 g/kg MVCRB3 2,193,1973

MSDS

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2,5-Bis(5-tert-butyl-2-benzoxazolyl)thiophene Usage And Synthesis

Description

2,5-Bis (5-tert-butyl-2-benzoxazolyl) thiophene (also known as fluorescent brightener 184)1 is used as an optical brightener, which converts UV light into visible light. It is also used as a fluorescent brightener for thermoplastic resins of polyvinyl chloride, acrylic resin, polyester fiber, thermoplastic plastic, ABS, cellulose acetate fiber, paint, coating and printing ink. It is also useful in detecting the presence of thin-film electrical contact lubricants2-4.

Sources

  1. https://pubchem.ncbi.nlm.nih.gov/compound/bbot#section=Top
  2. https://www.alfa.com/zh-cn/catalog/A14928/
  3. http://www.xcolorpigment.com/FLUORESCENT-BRIGHTENER-OB.html
  4. http://www.offerchems.com/products/catalyst-auxiliary/fluorescent-brightener-184-cas-7128-64-5/

Chemical Properties

light yellow-green crystals

Uses

Optical brightener additive in polymers, fibers, films, inks, laquers, and paints. In liquid scintillators.

Safety Profile

Low toxicity by ingestion. Whenheated to decomposition it emits toxic vapors of NOx andSOx.

2,5-Bis(5-tert-butyl-2-benzoxazolyl)thiophene Preparation Products And Raw materials

Raw materials

2,5-Bis(5-tert-butyl-2-benzoxazolyl)thiopheneSupplier

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