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

Description Sources
Product Name
2,5-Bis(5-tert-butyl-2-benzoxazolyl)thiophene
CAS No.
7128-64-5
Chemical Name
2,5-Bis(5-tert-butyl-2-benzoxazolyl)thiophene
Synonyms
Optical Brightener OB;UVITEX OB;TINOPAL CBS-X;2,5-BIS(5-TERT-BUTYL-BENZOXAZOL-2-YL)THIOPHENE;UVITEX;Optical Brightening Agent;2,5-BIS(5-TERT-BUTYLBENZOXAZOYL)-2-THIOPHENE;BBOT;B-184;bbot150
CBNumber
CB3434574
Molecular Formula
C26H26N2O2S
Formula Weight
430.56
MOL File
7128-64-5.mol
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2,5-Bis(5-tert-butyl-2-benzoxazolyl)thiophene Property

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
storage temp. 
Keep in dark place,Sealed in dry,Room Temperature
solubility 
toluene: soluble50mg/mL
form 
powder
pka
3.03±0.10(Predicted)
color 
Pale Green to Yellow
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
LogP
8.6 at 25℃
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

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
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Warning
Hazard statements

H315Causes skin irritation

H319Causes serious eye irritation

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P271Use only outdoors or in a well-ventilated area.

P280Wear protective gloves/protective clothing/eye protection/face protection.

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
223999
Product name
2,5-Bis(5-tert-butyl-benzoxazol-2-yl)thiophene
Purity
suitable for scintillation, 99%
Packaging
5g
Price
$56.9
Updated
2024/03/01
TCI Chemical
Product number
B1554
Product name
2,5-Bis(5-tert-butyl-2-benzoxazolyl)thiophene
Purity
>98.0%(HPLC)(N)
Packaging
5g
Price
$36
Updated
2024/03/01
TCI Chemical
Product number
B1554
Product name
2,5-Bis(5-tert-butyl-2-benzoxazolyl)thiophene
Purity
>98.0%(HPLC)(N)
Packaging
25g
Price
$76
Updated
2024/03/01
Alfa Aesar
Product number
A14928
Product name
2,5-Bis(5-tert-butyl-2-benzoxazolyl)thiophene, 99%
Packaging
5g
Price
$47
Updated
2024/03/01
Alfa Aesar
Product number
A14928
Product name
2,5-Bis(5-tert-butyl-2-benzoxazolyl)thiophene, 99%
Packaging
25g
Price
$116
Updated
2024/03/01
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2,5-Bis(5-tert-butyl-2-benzoxazolyl)thiophene Chemical Properties,Usage,Production

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

2,5-Bis(5-tert-butyl-2-benzoxazolyl)thiophene 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, paint, coating and printing ink. It is also useful in detecting the presence of thin-film electrical contact lubricants.

Uses

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

Flammability and Explosibility

Not classified

Safety Profile

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

Properties and Applications

TEST ITEMS

SPECIFICATION

APPEARANCE

LIGHT YELLOW OR MILK WHITE POWDER

SHADE

LIGHT YELLOWISH

METLING POINT

201-202 ° C

PURITY

99% min

FINENESS

300 mesh min

SOLUBILITY

hardly soluble in water,but soluble in paraffin, mineral oils and ordinary organic solvents.

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

Raw materials

Adipic acid Glyoxal Chloroform Sodium Methoxide 2-Amino-4-tert-butylphenol Sodium disulfide Dichloromethane Thionyl chloride 2,5-Thiophenedicarboxylic acid

Preparation Products

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

Americas 1 Belgium 3 Brazil 1 China 338 Europe 1 France 1 Germany 6 India 26 Japan 6 New Zealand 1 Slovakia 1 South Korea 1 Switzerland 2 The Netherlands 2 Turkey 1 United Kingdom 12 United States 45 USA 1 Global 449
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View Lastest Price from 2,5-Bis(5-tert-butyl-2-benzoxazolyl)thiophene manufacturers

Qingdao Truelight functional Material Technology Co., Ltd.
Product
OPTICAL BRIGHTENER TRUELICHT OB 7128-64-5
Price
US $0.00/KG
Min. Order
1drums
Purity
98%
Supply Ability
20 tons
Release date
2021-11-22
airuikechemical co., ltd.
Product
Optical brightener Ob 7128-64-5
Price
US $0.00-0.00/Kg
Min. Order
1Kg
Purity
99.9%
Supply Ability
20 tons
Release date
2024-03-13
Hebei Duling International Trade Co. LTD
Product
2,5-Bis(5-tert-butyl-2-benzoxazolyl)thiophene 7128-64-5
Price
US $34.00/kg
Min. Order
1kg
Purity
99%
Supply Ability
5000 tons
Release date
2023-04-14

7128-64-5, 2,5-Bis(5-tert-butyl-2-benzoxazolyl)thiopheneRelated Search:

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