3-(1H-Benzimidazol-2-yl)-7-(diethylamino)-2H-chromen-2-one
3-(1H-benzimidazol-2-yl)-7-(diethylamino)-2-benzopyrone
CAS: 27425-55-4
Molecular Formula: C20H19N3O2
3-(1H-Benzimidazol-2-yl)-7-(diethylamino)-2H-chromen-2-one - Names and Identifiers
| Name | 3-(1H-benzimidazol-2-yl)-7-(diethylamino)-2-benzopyrone |
| Synonyms | 248-451-4 Coumarin 7 TERASIL BRILLIANT FLAVINE 8GFF SETARON BRILLIANT FLAVINE 8GFF 3-(2-BENZIMIDAZOLYL)-7-(DIETHYLAMINO)COUMARIN 3-(2'-BENZIMIDAZOLYL)-7-N,N-DIETHYL-AMINOCOUMARIN 3-(1H-BENZOIMIDAZOL-2-YL)-7-DIETHYLAMINO-CHROMEN-2-ONE 3-(1H-Benzimidazol-2-yl)-7-(diethylamino)-2-benzopyrone 3-(1H-benzimidazol-2-yl)-7-(diethylamino)-2-benzopyrone 3-(1H-BENZIMIDAZOL-2-YL)-7-(DIETHYLAMINO)-2H-CHROMEN-2-ONE 3-(1H-Benzimidazol-2-yl)-7-(diethylamino)-2H-chromen-2-one |
| CAS | 27425-55-4 |
| EINECS | 248-451-4 |
| InChI | InChI=1/C20H19N3O2/c1-3-23(4-2)14-10-9-13-11-15(20(24)25-18(13)12-14)19-21-16-7-5-6-8-17(16)22-19/h5-12H,3-4H2,1-2H3,(H,21,22) |
3-(1H-Benzimidazol-2-yl)-7-(diethylamino)-2H-chromen-2-one - Physico-chemical Properties
| Molecular Formula | C20H19N3O2 |
| Molar Mass | 333.38 |
| Density | 1.2071 (rough estimate) |
| Melting Point | 234-237°C(lit.) |
| Boling Point | 470.35°C (rough estimate) |
| Flash Point | 318°C |
| Vapor Presure | 1.85E-14mmHg at 25°C |
| Appearance | Powder |
| Color | Bright yellow |
| pKa | 10.83±0.10(Predicted) |
| Storage Condition | -20°C |
| Refractive Index | 1.6200 (estimate) |
| MDL | MFCD00051348 |
| Physical and Chemical Properties | Brilliant yellow crystal, melting point 233-234 ℃. |
| Use | Suitable for use as laser dye |
3-(1H-Benzimidazol-2-yl)-7-(diethylamino)-2H-chromen-2-one - Risk and Safety
| Risk Codes | R36/37/38 - Irritating to eyes, respiratory system and skin. R20/21/22 - Harmful by inhalation, in contact with skin and if swallowed. |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S38 - In case of insufficient ventilation, wear suitable respiratory equipment. S37/39 - Wear suitable gloves and eye/face protection |
| WGK Germany | 3 |
| HS Code | 29332900 |
3-(1H-Benzimidazol-2-yl)-7-(diethylamino)-2H-chromen-2-one - Reference Information
| LogP | 3.68 |
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| application | fluorescent yellow 10GF is mainly used for transparent coloring of thermoplastic resin to obtain green yellow with heat resistance and stability up to 300 ℃. It is also an important fluorescent yellow disperse dye. It can be used for coloring a variety of resins and fibers before spinning It is used for dyeing acrylic fiber and its blended textile articles, and also for paper coloring Dispersed fluorescent yellow 8GFF is used for dyeing and printing polyester and its blended fabrics. The high temperature and high pressure method has good levelness, bright color and light, and strong fluorescence. It is also used for coloring plastic products. Suitable for laser dye Used as laser dye. |
| Production method | Using p-N,N-diethylaminosalicylaldehyde and 2-cyanomethylbenzimidazole as raw materials, the product is obtained by condensation in dimethylformamide. The finished product is obtained by acid cooking, filtration, grinding and drying.. Using 4-diethylaminosalicylaldehyde and 2-cyanomethylbenzimidazole as raw materials, the two are condensed in DMF solvent to form imine, and then hydrolyzed in acidic medium to obtain the product. Or use 4-diethylaminosalicylaldehyde and 2-benzothiazole acetic acid as raw materials, and the two are condensed to obtain the product. After solvent recovery and other post-treatment, filtration, drying to obtain the finished product.. Add 8g of 4-diethylaminosalicylaldehyde, 7.2g of 2-cyanomethylbenzimidazole and 65ml of dimethylformamide (DMF) to the reaction bottle, stir, add a small amount of morpholine and glacial acetic acid after the solid is dissolved, and react at 25 ℃ for 24 hours. Filtration, washing, and drying to obtain intermediate imine (2-imo-3-2-benzimidazole)-7-diethylamino coumarin. 100ml of hydrochloric acid, 5.7g of the above-mentioned imine are added to the reaction bottle, refluxed at 100-103 ℃ for 2.5h, cooled to 5 ℃, 250g of ice is added, neutralized with 50% NaOH solution to pH = 7.5, yellow solid is precipitated, and the brilliant yellow product is filtered, washed with water and dried. |
Last Update：2024-04-09 20:52:54
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Multiple SpecificationsSpot supply
Product Name: Coumarin 7 Visit Supplier Webpage Request for quotationCAS: 27425-55-4
Tel: 18301782025
Email: 3008007409@qq.com
Mobile: 18021002903
QQ: 3008007409
Wechat: 18301782025
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