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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 337 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 448
Shanghai Harvest Chemical Industrial Co., Ltd.
Tel
21-31038972 15721252604
Fax
+86-21-51385350
Email
ammyzuo@harvest-chem.com
Country
China
ProdList
2511
Advantage
64
BEIJING ODYSSEY CHEMICALS CO.,LTD
Tel
15600986547
Email
jack@bj-odyssey.com
Country
China
ProdList
31
Advantage
58
Tianjin Zhongxin Chemtech Co., Ltd.
Tel
022-66880623
Fax
86(0)22-66880086
Email
sales@tjzxchem.com
Country
China
ProdList
614
Advantage
60
J & K SCIENTIFIC LTD.
Tel
010-82848833 400-666-7788
Fax
86-10-82849933
Email
jkinfo@jkchemical.com
Country
China
ProdList
96815
Advantage
76
Meryer (Shanghai) Chemical Technology Co., Ltd.
Tel
4006608290; 18621169109
Fax
86-21-61259102
Email
market03@meryer.com
Country
China
ProdList
40241
Advantage
62
INTATRADE GmbH
Tel
+49 3493/605464
Fax
+49 3493/605470
Email
sales@intatrade.de
Country
Germany
ProdList
3576
Advantage
66
3B Pharmachem (Wuhan) International Co.,Ltd.
Tel
821-50328103-801 18930552037
Fax
86-21-50328109
Email
3bsc@sina.com
Country
China
ProdList
15848
Advantage
69
Alfa Aesar
Tel
400-6106006
Fax
021-67582001/03/05
Email
saleschina@alfa-asia.com
Country
China
ProdList
30132
Advantage
84
TCI (Shanghai) Development Co., Ltd.
Tel
021-67121386
Fax
021-67121385
Email
Sales-CN@TCIchemicals.com
Country
China
ProdList
24539
Advantage
81
Energy Chemical
Tel
021-021-58432009 400-005-6266
Fax
021-58436166
Email
sales8178@energy-chemical.com
Country
China
ProdList
44751
Advantage
61
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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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