1,2-di(5-mythyl-benziazolyl)ethylene
2,2'-vinylenebis[5-methylbenzoxazole]
CAS: 1041-00-5;12224-12-3
Molecular Formula: C18H14N2O2
1,2-di(5-mythyl-benziazolyl)ethylene - Names and Identifiers
| Name | 2,2'-vinylenebis[5-methylbenzoxazole] |
| Synonyms | Optical Brightener PF OPTICAL BRIGHTENER 135 FLUOESCENT BRIGHTENER-PF Fluorescent Brightener PF Fluorescent brightener 135 Fluorescent brightener PF-3 optical brightenerPF(OBA135) Optical Brightening Agent PF Optical Brightening Agent PF-3 C.I. Fluorescent Brightener 135 Fluorescent brightening agent 135 1,2-di(5-mythyl-benziazolyl)ethylene Fluorescent brightener PF for plastic 2,2'-vinylenebis[5-methylbenzoxazole] Optical Brightening Agent PF C. I. 135 2,2-ethene-1,2-diylbis(5-methyl-1,3-benzoxazole) 2,2-(E)-ethene-1,2-diylbis(5-methyl-1,3-benzoxazole) 5-methyl-2-[(E)-2-(5-methyl-1,3-benzoxazol-2-yl)ethenyl]-1,3-benzoxazole |
| CAS | 1041-00-5 12224-12-3 |
| EINECS | 602-366-2 |
| InChI | InChI=1/C18H14N2O2/c1-11-3-5-15-13(9-11)19-17(21-15)7-8-18-20-14-10-12(2)4-6-16(14)22-18/h3-10H,1-2H3/b8-7+ |
1,2-di(5-mythyl-benziazolyl)ethylene - Physico-chemical Properties
| Molecular Formula | C18H14N2O2 |
| Molar Mass | 290.31596 |
| Density | 1.287g/cm3 |
| Melting Point | 180-181℃ |
| Boling Point | 471.2°C at 760 mmHg |
| Flash Point | 237.3°C |
| Vapor Presure | 1.35E-08mmHg at 25°C |
| pKa | 2.87±0.10(Predicted) |
| Storage Condition | 2-8℃ |
| Refractive Index | 1.727 |
| Physical and Chemical Properties | The milky white slurry with good dispersibility is neutral. It belongs to non ionic compounds. Melting point 182~184 ℃. Insoluble in water, soluble in DMF and ethanol, acid resistant to pH 2-3, and alkali resistant to pH around 10. Resistant to hard water to 5 × 10-4. The optimal dyeing temperature is 150 ℃ (in a neutral or weakly alkaline bath), which can withstand roasting at 180-200 ℃. Its slurry and diluent are not sensitive to light. |
| Use | Used for polyester film, polyvinyl chloride, polypropylene, ABS, organic glass and other whitening |
1,2-di(5-mythyl-benziazolyl)ethylene - Upstream Downstream Industry
| Raw Materials | Polyoxyethylene lauryl ether Poly(vinyl alcohol) L-(-)-Malic Acid DL-Malic acid 2-Amino-p-cresol |
1,2-di(5-mythyl-benziazolyl)ethylene - Reference
| Reference Show more | 1. He Zhihua, Zuo Junfeng, Xiong Majian, Zhu Bijun. Determination of Fluorescent Whitening Agents in Pharmaceutical Composite Films by High Performance Liquid Chromatography [J]. Journal of Drug Analysis, 2020,40(09):1645-1652. |
1,2-di(5-mythyl-benziazolyl)ethylene - safety
Open Data Verified Data
This product can be managed according to general industrial chemicals. When using it, gloves and protective glasses should be worn to avoid direct contact with the skin and eyes. If it gets on the skin, rinse with water and soap. Place in a cool and dry warehouse to prevent exposure to sunlight and rain.
Last Update：2023-10-20 09:14:42
1,2-di(5-mythyl-benziazolyl)ethylene - Preparation method
Open Data Verified Data
Firstly, 33 portions of xylene were injected into the reactor, followed by 3.5 portions of o-aminop-cresol, 2.0 portions of hydroxysuccinic acid, and 0.1 portions of boric acid. Carbon dioxide was introduced and heated to boiling under stirring. Reflux for 12 hours, and use a water separator to separate the generated water during the reaction. After the reaction is completed, cool down to 130 ℃, add activated carbon, stir and heat for reflux for half an hour, filter, cool the filtrate to 15 ℃, precipitate crystals, and dry to obtain the crude product. Put the crude product, water, and polyvinyl alcohol together into a sand mill to grind to a certain fineness, then add an appropriate amount of leveling agent O, formaldehyde, polyvinyl alcohol solution, etc., and stir thoroughly to obtain the finished product (the dosage in preparation is the mass fraction).
Last Update：2024-01-02 23:10:35
1,2-di(5-mythyl-benziazolyl)ethylene - Nature
| EPA chemical information | Benzoxazole, 2,2'-(1,2-ethenediyl)bis[5-methyl- (1041-00-5) |
Last Update：2024-04-10 22:29:15
1,2-di(5-mythyl-benziazolyl)ethylene - Uses and synthesis methods
chemical properties
this product is a milky white slurry with good dispersibility and is neutral. It is a non-ionic compound. Melting point 182~184 ℃. Insoluble in water, soluble in DMF and ethanol, acid resistance to pH = 2~3, alkali resistance to pH = 10 or so. Hard water resistance to 5 × 10-4. The best dyeing temperature is 150 ℃ (in neutral or weak alkaline bath) and can withstand roasting at 180~200 ℃. Its slurry and diluent are not sensitive to light.
use
1. This product is used as a whitening agent for synthetic fibers, and is suitable for whitening polyester, nylon, acetate or synthetic fibers, cotton, wool blended fabrics, etc. The fabric with it is effective in good light fastness and moisture fastness.
2. Used as a whitening agent for polyester, polyamide, acetate and blended fabrics
production method
first, 33 parts of xylene are put into the reaction kettle, then 3.5 parts of o-amino p-cresol, 2.0 parts of hydroxysuccinic acid and 0.1 parts of boric acid are added, carbon dioxide is introduced, and heated to boiling under stirring. After 12 h of reflux, the water separator is used to separate the generated water in the reaction. After the reaction is completed, the temperature is reduced to 130 ℃, activated carbon is put in, stirred, heated and refluxed for half an hour, filtered, the filtrate is cooled to 15 ℃, crystallized, and dried to obtain crude products.
P> put the crude product, water and polyvinyl alcohol into sand grinding to a certain fineness, then add appropriate amount of leveling agent O, formaldehyde, polyvinyl alcohol solution, etc., and fully stir to obtain the finished product (the feeding amount in preparation is mass fraction).Last Update：2024-04-10 22:29:15
Supplier List
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Multiple Specifications
Product Name: Fluorescent Brightener 135 Request for quotationCAS: 1041-00-5
Tel: +86 19849939632
Email: 2470479589@qq.com
Mobile: +86 19849939632
QQ: 2470479589
Wechat: +86 19849939632
Product Name: 2,2'-vinylenebis[5-methylbenzoxazole] Request for quotation
CAS: 1041-00-5
Tel: 0086-551-65418684
Email: sales@tnjchem.com
info@tnjchem.com
Mobile: 0086 189 4982 3763
QQ: 2881500840
Wechat: 0086 189 4982 3763
WhatsApp: 0086 189 4982 3763
Product List: View Catalog
CAS: 1041-00-5
Tel: 0086-551-65418684
Email: sales@tnjchem.com
info@tnjchem.com
Mobile: 0086 189 4982 3763
QQ: 2881500840
Wechat: 0086 189 4982 3763
WhatsApp: 0086 189 4982 3763
Product List: View Catalog
Spot supply
Product Name: Fluorescent Brightener 135,2,2-(1,2-Ethenediyl)Bis[5-Methylbenzoxazole] Visit Supplier Webpage Request for quotationCAS: 1041-00-5
Tel: 18301782025
Email: 3008007409@qq.com
Mobile: 18021002903
QQ: 3008007409
Wechat: 18301782025
View History
Raw Materials for 1,2-di(5-mythyl-benziazolyl)ethylene