Description Sources
ChemicalBook > CAS DataBase List > 2,5-Bis(5-tert-butyl-2-benzoxazolyl)thiophene

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
More
Less

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)
More
Less

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
More
Less

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.

More
Less

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
More
Less

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.

Synthesis

2,5-Bis(5-tert-butyl-2-benzoxazolyl)thiophene, also known as fluorescent brightener 0B, is used as a mixing raw material for plastics, coatings, road marking paints, etc., to achieve a whitening effect. In the prior art, the preparation method is to add a mixed solution of trichlorobenzene and toluene into a reaction kettle, then add 0B acid (i.e. thiophene 2,5-dicarboxylic acid), 0B phenol (i.e. p-tert-butyl-o-aminophenol) and boric acid, heat to about 120°C for condensation reaction, evaporate the water generated by the reaction together with the toluene, release the water with a water separator, and return the toluene to the reaction kettle. When the temperature of the reaction material rises to above 180°C, the toluene is evaporated, and the temperature continues to rise for reaction. The water is continuously separated by utilizing the immiscibility of trichlorobenzene and water until the reaction temperature reaches about 230°C. Based on the dehydration phenomenon, the reaction is judged to be complete, and then the material is cooled to below 30°C. The product is crystallized in trichlorobenzene, solid-liquid separation is performed, the trichlorobenzene mother liquor is used for recovery, and the obtained solid material is refined with xylene to obtain 2,5-Bis(5-tert-butyl-2-benzoxazolyl)thiophene.

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

More
Less

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

Americas 1 Belgium 3 Brazil 1 China 361 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 472
HBCChem, Inc.
Tel
+1-510-219-6317
Fax
+1-650-486-1361
Email
sales@hbcchem.com
Country
United States
ProdList
10648
Advantage
60
Alfa Chemistry
Tel
Fax
1-516-927-0118
Email
Info@alfa-chemistry.com
Country
United States
ProdList
24072
Advantage
58
Aladdin Scientific
Tel
+1-+1(833)-552-7181
Email
sales@aladdinsci.com
Country
United States
ProdList
57505
Advantage
58
Monson Companies, Inc. (An Azelis Company)
Tel
--
Fax
--
Email
orders@monsonco.com
Country
United States
ProdList
22
Advantage
58
Achiewell LLC
Tel
--
Fax
--
Email
mfritsche@achiewell.com
Country
United States
ProdList
100
Advantage
58
Alichem Inc.
Tel
--
Fax
--
Email
sales@alichem.com
Country
United States
ProdList
6167
Advantage
58
Sarchem Laboratories, Inc.,
Tel
--
Fax
--
Country
United States
ProdList
349
Advantage
58
Day-Glo Color Corp.
Tel
--
Fax
--
Email
dayglo@dayglo.com
Country
United States
ProdList
7
Advantage
58
Fluorochem Ltd.
Tel
--
Fax
--
Email
enquiries@fluorochem.co.uk
Country
United States
ProdList
4583
Advantage
58
TCI America, Inc. (Tokyo Chemical Industry Co., Ltd.)
Tel
--
Fax
--
Email
.Crew@tcichemicals.com
Country
United States
ProdList
3164
Advantage
58
MP Biomedicals, LLC. (Division of Valiant FC Co., Ltd.)
Tel
--
Fax
--
Email
serv@mpbio.com
Country
United States
ProdList
1854
Advantage
58
MilliporeSigma (Sigma-Aldrich Corp.)
Tel
--
Fax
--
Email
@sial.com
Country
United States
ProdList
5414
Advantage
58
The Hanson Group, LLC
Tel
--
Fax
--
Email
sales@hansonco.net
Country
United States
ProdList
25
Advantage
58
Cationa Chemical Corporation
Tel
--
Fax
--
Country
United States
ProdList
49
Advantage
58
OChem Incorporation
Tel
--
Fax
--
Email
sales@ocheminc.com
Country
United States
ProdList
6501
Advantage
60
VWR International, LLC.
Tel
--
Fax
--
Email
@sargentwelch.com
Country
United States
ProdList
6262
Advantage
58
Spectrum Chemical Mfg. Corp.
Tel
--
Fax
--
Email
marketing@spectrumchemical.com
Country
United States
ProdList
3113
Advantage
60
HBCChem Inc.
Tel
--
Fax
--
Email
sales@hbcchem-inc.com
Country
United States
ProdList
4569
Advantage
30
Charkit Chemical Corporation
Tel
--
Fax
--
Email
sales@charkit.com
Country
United States
ProdList
2993
Advantage
65
TCI America
Tel
--
Fax
--
Email
sales@tciamerica.com
Country
United States
ProdList
6909
Advantage
75
Combi-Blocks Inc.
Tel
--
Fax
--
Email
sales@combi-blocks.com
Country
United States
ProdList
6618
Advantage
69
SynQuest Laboratories, Inc.
Tel
--
Fax
--
Email
info@synquestlabs.com
Country
United States
ProdList
6871
Advantage
62
Riedel-de Haen AG
Tel
--
Fax
--
Country
United States
ProdList
6773
Advantage
87
Frontier Scientific, Inc.
Tel
--
Fax
--
Email
sales@frontiersci.com
Country
United States
ProdList
6222
Advantage
86
Matrix Scientific
Tel
--
Fax
--
Email
sales@matrixscientific.com
Country
United States
ProdList
6632
Advantage
80
Anvia Chemicals, LLC
Tel
--
Fax
--
Email
sales@anviachem.com
Country
United States
ProdList
3933
Advantage
0
3B Scientific Corporation
Tel
--
Fax
--
Email
sales@3bsc.com
Country
United States
ProdList
6962
Advantage
56
Waterstone Technology, LLC
Tel
--
Fax
--
Email
sales@waterstonetech.com
Country
United States
ProdList
6786
Advantage
30
AlliChem, LLC
Tel
--
Fax
--
Email
sales@allichemllc.com
Country
United States
ProdList
6516
Advantage
60
Ryan Scientific, Inc.
Tel
--
Fax
--
Email
ryan.reichlyn@ryansci.com
Country
United States
ProdList
6439
Advantage
60
Advance Scientific & Chemical
Tel
--
Fax
--
Email
sales@advance-scientific.com
Country
United States
ProdList
6419
Advantage
71
Alfa Aesar
Tel
--
Fax
--
Email
tech@alfa.com
Country
United States
ProdList
6814
Advantage
81
HONEST JOY HOLDINGS LIMITED
Tel
--
Fax
--
Email
sales@honestjoy.cn
Country
United States
ProdList
6675
Advantage
54
Aceto Corporation
Tel
--
Fax
--
Email
contact@aceto.com
Country
United States
ProdList
2619
Advantage
75
2A PharmaChem USA
Tel
--
Fax
--
Email
sales@2apharmachem.com
Country
United States
ProdList
6137
Advantage
39
3B Scientific Corporation
Tel
--
Fax
--
Email
sales@3bsc.com
Country
United States
ProdList
6718
Advantage
47
Morre-Tec Industries, Inc.
Tel
--
Fax
--
Email
sales@morretec.com
Country
United States
ProdList
169
Advantage
64
Sciencelab.com, Inc.
Tel
--
Fax
--
Email
accounting@sciencelab.com
Country
United States
ProdList
4159
Advantage
82
TimTec Corporation
Tel
--
Fax
--
Country
United States
ProdList
1945
Advantage
58
Spectrum Chemicals & Laboratory Products
Tel
--
Fax
--
Email
sales@spectrumchemical.com
Country
United States
ProdList
6699
Advantage
77
MP Biomedicals, Inc.
Tel
--
Fax
--
Country
United States
ProdList
6561
Advantage
81
Polysciences, Inc.
Tel
--
Fax
--
Email
info@polysciences.com
Country
United States
ProdList
1118
Advantage
81
ChemPacific Corporation
Tel
--
Fax
--
Email
sales@chempacific.com
Country
United States
ProdList
6891
Advantage
51
Pylam Products Company, Inc.
Tel
--
Fax
--
Email
sales@pylamdyes.com
Country
United States
ProdList
3257
Advantage
30
BOSCHE SCIENTIFIC, LLC
Tel
--
Fax
--
Email
Sales@BoscheSci.com
Country
United States
ProdList
6477
Advantage
55
More
Less

View Lastest Price from 2,5-Bis(5-tert-butyl-2-benzoxazolyl)thiophene manufacturers

Hebei Zhuanglai Chemical Trading Co.,Ltd
Product
Sodium hydroxyethyl sulfonate 7128-64-5
Price
US $60.00/kg
Min. Order
1kg
Purity
99
Supply Ability
5000
Release date
2024-05-15
Hebei Zhuanglai Chemical Trading Co.,Ltd
Product
OPTICAL BRIGHTENER TRUELICHT OB 7128-64-5
Price
US $70.00/kg
Min. Order
1kg
Purity
99
Supply Ability
5000
Release date
2024-05-23
Shandong Deshang Chemical Co., Ltd.
Product
2,5-Bis(5-tert-butyl-2-benzoxazolyl)thiophene 7128-64-5
Price
US $10.00-7.00/kg
Min. Order
1kg
Purity
99.99%
Supply Ability
10 tons
Release date
2024-06-13

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

tert-Butyldimethylsilyl chloride butyl rubber Fluorescent brightener 85 Fluorescent brightener 71 Butyl acrylate C.I. 482200 BISMERTHIAZOL Fluorescent Brightener 28 tert-Butyl hydroperoxide 2-Butoxyethanol Buprofezin Methyl 4-tert-butylbenzoate Thiophene 2,2'-(1,2-Ethenediyldi-4,1-phenylene)bisbenzoxazole 2,1,3-Benzothiadiazole tert-Butyl methyl ether FLUORESCENT BRIGHTENER 28 Butyl acetate

  • 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
  • 2,5-DI(5-TERT-BUTYLBENZOXAZOL-2-YL)THIOPHENE
  • 2,5-BIS-2(5-TERT-BUTYL-BENZOXALYL)THIOPHENE
  • 2,5-BIS(5-TERT-BUTYLBENZOXAZOYL)-2-THIOPHENE
  • 2,5-BIS(5-TERT-BUTYL-BENZOXAZOL-2-YL)THIOPHENE
  • 2,5-BIS(5'-TERT-BUTYL-2'-BENZOXAZOLYL)THIOPHENE
  • 2,5-BIS-(5-TERT-BUTYL-2-BENZOXAZOL-2-YL)THIOPHENE
  • 2,5-BIS(5'-TERT-BUTYL-2-BENZOXAZOL-2-YL)THIOPHENE
  • 2,5-BIS-(5-T-BUTYLBENZOXAZOLYL-[2-YL])-THIOPHENE
  • 2,5-BIS(5-T-BUTYL-2-BENZOXAZOLYL)THIOPHENE
  • 2,2'-(2,5-THIOPHENEDIYL) BIS [5-TERT-BUTYLBENZOXAZOLE]
  • 2,5-thiophenediylbis(5-tert-butyl-1,3-benzoxazole)
  • Optical Brightening Agent OB C. I. 184
  • Fluorescent whitening agent OB
  • BIS(T-BUTYL BENZOXAZOLYL) THIOPHENE
  • 2 5-BIS(5-TERT-BUTYL-2-BENZOXAZOLYL)THI&
  • 2,5-BIS(5-TERT-BUTYL-2-BENZOXAZOLYL)THIO -PHENE, 99%, SCINTILLATION GRADE
  • OptiblancPL
  • 2,5-BIS-(5'-TERT-BUTYL-2-BENZOXAZOL-2-YL)THIOPHENE (BBOT)
  • BBOT, scintillation grade
  • OpticalBrighteningAgentOBC.I.
  • 2,2'-(Thien-2,5-diyl)bis[5-(tert-butyl)-1,3-benzoxazole], 2,5-Bis[5-(tert-butyl)benzo[d]oxazol-2-yl]thiophene, BBOT
  • 2,5-Bis[5-(tert-butyl)-1,3-benzoxazol-2-yl]thiophene
  • 2,2-(2,5-two phenylthio)-[5-(1,1- twoMethyl ethyl)]benzoxazoles
  • 2,5-Bis(5-tert-butyl-2-benzoxazolyl)thiophene,99%
  • 2,5-Bis(5-<i>tert-</i>butyl-2-benzoxazolyl)thiophene
  • Optical Brighter OB
  • 2,5-Bis(5-tert-butylbenzooxazol-2-yl)thiophene
  • Optical Brightener OB
  • optical brightenerER-1(OBA199)
  • optical brightenerOB(OBA184)
  • TINOPAL CBS-X
  • UVITEX 2B
  • UVITEX(R) 2B
  • UVITEX OB
  • TOSLAB 644820
  • 2,2’-(2,5-thiophenediyl)bis(5-(1,1-dimethylethyl)-benzoxazol
  • 2,2’-(2,5-thiophenediyl)bis(5-tert-butyl-benzoxazol
  • 2,2’-(2,5-thiophenediyl)bis[5-(1,1-dimethylethyl)-benzoxazol
  • 2,2’-(2,5-thiophenediyl)bis[5-(1,1-dimethylethyl)-Benzoxazole
  • UVITEX
  • 2,5-Thiophendiylbis(5-tert.-butyl-1,3-benzoxazol)
  • 1,4-BIS(BENZOXAZOLE-2-YL)NAPHTHALENE
  • 2,5-Bis(5-t-butylbenzoxazol-2-yl)thiophene
  • 2,5-Bis-2(5-tert-butylbenzoxazolyl)thiophene
  • 5-tert-Butyl-2-[5-(5-tert-butyl-1,3-benzoxazol-2-yl)-2-thienyl]-1,3-benzoxazole
  • EUTEX OB-RC
  • EUTEX-OB RC EXTRA
  • FLUORESCENTBRIGHTENEROB(2,5-BIS(5-TERT-BUTYL-2-BENZOXAOLYL)THIOPHENE)
  • Fluorescent Brightener 184
  • 2，5-di[5'-tertutyl-benzoxa-zolyl-2']-thiophene