2,5-Bis(5-tert-butyl-2-benzoxazolyl)thiophene NEW
| Price | Get Latest Price |
| Package | 25KG |
| Min. Order: | 1KG |
| Supply Ability: | 50000KG/month |
| Update Time: | 2024-09-25 |
Product Details
| Product Name: 2,5-Bis(5-tert-butyl-2-benzoxazolyl)thiophene | CAS No.: 7128-64-5 |
| Min. Order: 1KG | Purity: 99% |
| Supply Ability: 50000KG/month | Release date: 2024/09/25 |
| 2,5-Bis(5-tert-butyl-2-benzoxazolyl)thiophene Basic information |
| Description Sources |
| 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;Industrial/Fine Chemicals;Organics;Electroluminescence;Functional Materials |
| Mol File: | 7128-64-5.mol |
 | |
| 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) |
| Fp | >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) |
| 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 Information |
| Provider | Language |
|---|---|
| Fluorescent Brightener 184 | English |
| SigmaAldrich | English |
| ACROS | English |
| ALFA | English |
| 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 |
|
| Chemical Properties | light yellow-green crystals |
| Uses | Optical brightener additive in polymers, fibers, films, inks, laquers, and paints. In liquid scintillators. |
| 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. |
| 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 ITEMSSPECIFICATIONAPPEARANCELIGHT YELLOW OR MILK WHITE POWDERSHADELIGHT YELLOWISHMETLING POINT201-202 ° CPURITY99% minFINENESS300 mesh minSOLUBILITYhardly 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 | Dichloromethane-->Thionyl chloride-->Chloroform-->Sodium Methoxide-->Glyoxal-->Adipic acid-->2,5-Thiophenedicarboxylic acid-->2-Amino-4-tert-butylphenol |
Product Picture
Packing &shipping&Payment
Packing:25kg/drum
Shipping:by sea or by air
Payment:T/T,western union,moneygram
Packaging Details drum
Port:Tianjin
Lead Time :
Shipping:by sea or by air
Payment:T/T,western union,moneygram
Packaging Details drum
Port:Tianjin
Lead Time :
| Quantity(Kilograms) | 1 - 10000 | >10000 |
| Est. Time(days) | 5 | To be negotiated |
Company information
Hebei Mojin Biotechnology Co., Ltd, Our company is a professional in 4'-Methylacetophenone,Levamisole hydrochloride ,N-Methylformamide and other chemical reagents research and development production enterprises. Our business covers more than 30 countries, most of the big customers come from Europe, America and other countries in the world, we can guarantee the quality and price. In recent decades, with the efforts of all employees, we have established many cooperative companies in shandong, henan, guangdong and other places. Our corporate purpose is based on the market, enhance the strength, take the road of scientific and environmental sustainable development, relying on the country. Technology r & d center, increase the investment in r & d, based on the domestic market, expand the international market, manufacturing quality products, sincere service to the society, into a modern, ecological, scientific and technological enterprise world.
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