C.I. 37565
3-hydroxy-N-2-naphthyl-2-naphthamide
CAS: 135-64-8
Molecular Formula: C21H15NO2
C.I. 37565 - Names and Identifiers
| Name | 3-hydroxy-N-2-naphthyl-2-naphthamide |
| Synonyms | C.I. 37565 BrentholBN AcnaNaphtholD Tulathol AS-SW Amarthol AS-SW NAPHTHOL AS-SW Naphthol AS-SW Dycosthol AS-SW C.I. Developer 23 AZOIC COUPLING COMPONENT 7 Azoic coupling component 7 C.I. Azoic Coupling Component 7 3-HYDROXY-N-2-NAPHTHYL-2-NAPHTHAMIDE 3-hydroxy-N-2-naphthyl-2-naphthamide 2-Hydroxy-3-Naphthoyl-2-Naphthylamine 3-hydroxy-N-(naphthalen-2-yl)naphthalene-2-carboxamide |
| CAS | 135-64-8 |
| EINECS | 205-208-7 |
| InChI | InChI=1/C21H15NO2/c23-20-13-17-8-4-3-7-16(17)12-19(20)21(24)22-18-10-9-14-5-1-2-6-15(14)11-18/h1-13,23H,(H,22,24) |
C.I. 37565 - Physico-chemical Properties
| Molecular Formula | C21H15NO2 |
| Molar Mass | 313.35 |
| Density | 1.333±0.06 g/cm3(Predicted) |
| Melting Point | 243~244℃ |
| Boling Point | 479.3±28.0 °C(Predicted) |
| Flash Point | 243.6°C |
| Vapor Presure | 8.27E-10mmHg at 25°C |
| Appearance | powder to crystal |
| Color | Light yellow to Brown |
| pKa | 8.73±0.40(Predicted) |
| Storage Condition | 2-8°C |
| Refractive Index | 1.778 |
| MDL | MFCD00053488 |
| Physical and Chemical Properties | Character light yellow powder. melting point 243~244 ℃ solubility: soluble in chlorobenzene. Dissolved in caustic soda solution is yellow. Insoluble in water and soda ash solution. |
| Use | Mainly used as a priming agent for cotton fiber dyeing and printing |
C.I. 37565 - Reference Information
| color index | 37565 |
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| introduction | N-2-naphthyl -3-hydroxy -2-naphthyl formamide is also called 3-hydroxy-N-(2-naphthyl)-2-naphthyl formamide, light yellow powder, toxic! N-2-naphthyl-3-hydroxy-2-naphthylamide is soluble in chlorobenzene and caustic soda solution, but insoluble in triple soda ash. Its caustic soda solution is yellow. N-2-naphthyl-3-hydroxy-2-naphthylamide is an ice dye chromophenol, which is used for dyeing and printing cotton and hemp fibers. Preparation or source: Condensation of 2,3-acid with β-naphthylamine. |
| Application example | CN201710957749.9 discloses a diatomite-based curing agent for fixing cadmium in river sediment. After diatomite cleaning, it was modified into substance A by a mixture of trimethylchlorosilane chitosan, 2-methylimidazole, N-2-naphthyl-3-hydroxy-2-naphthylamide and trichloro-2-carbosilane; substance A was modified into substance B by a mixture of SnCl4, CeCl3, Cu(NO3)2 and Mn(NO3)2; substance B is modified by a mixed solution prepared by diphenyldihydroxysilane, 2-hydroxy-4-methylthiobutyric acid and 2-bromo-6-chloropyrazine to prepare substance C; Substance C is modified by a mixed solution prepared by imidazolo [1,2-A] pyridine -3-formaldehyde, polyvinylpyrrolidone and methoxypolyethylene glycol. The substance obtained after modification is a diatomite-based curing agent used to fix cadmium in river sediment. |
| use | mainly used as a primer for cotton fiber dyeing and printing tryptopol AS-SW is mainly used for cotton dyeing and is a common primer for cotton yarn dyeing with red sauce. It is also used for dyeing vinylon, viscose fiber, silk and nylon. It can be coupled with red-based RC and red-based KB to dye brilliant red; coupled with blue salt to dye blue; coupled with black-based or black salt to dye black. It can also be used instead of tryptopol. Mainly used as a primer for dyeing and printing of cotton fabrics. And can be used instead of color acid. |
| Production method | First, 2,3-acid, sodium hydroxide and chlorobenzene are salted, then condensed with taurine acid and phosphorus trichloride, and then hydrolyzed, neutralized and post-processed with sodium dihydrogen phosphate to obtain the finished product. Raw material consumption (kg/t)2,3-acid (100%) 750 tauric acid (100%) 900 phosphorus trichloride (100%) 230 soda ash (98%) 388 chlorobenzene (98%) 410 using 2,3-acid and 2-amino -1-naphthalene sulfonic acid (Tauric acid, Tobias acid) as raw materials, 2,3-acid is first made into sodium salt, and then in chlorobenzene medium, in the presence of phosphorus trichloride, it is condensed with tauric acid, and then hydrolyzed in the presence of sodium dihydrogen phosphate to obtain the product. The finished product is neutralized, distilled, filtered, washed and dried.. 1500-2000L of chlorobenzene, 338kg of tulatic acid, 2,3-acid 282kg (100%), 177.5kg of 50% sodium hydroxide solution and 63.9kg of sodium dihydrogen phosphate (100%) were added to the salt-forming pot. When the temperature is raised to 95-105 ℃, the reflux is 1.5h, the temperature is slowly raised and dehydrated until the temperature reaches 133-134 ℃, and the end point is when the distilled liquid is transparent. The distilled water is about 1800-2000L. Put the above reaction hydraulic pressure into a condensation pot, cool to 65 ℃, slowly add the mixed solution of phosphorus trichloride and chlorobenzene within 1.5h (91kg of phosphorus trichloride and chlorobenzene are mixed into 50%-60% mixed solution), raise the temperature to 132-134 ℃ within 2h after adding, and keep the temperature for 6h. Add 2000L of water and 250kg of 30% sodium hydroxide to the distillation kettle, then press the above condensate, stir for 15min, and measure the pH value above 8. Add 3kg of sodium sulfate and steam chlorobenzene until it is completely steamed. Add 5000L hot water at 90 ℃ and filter. The filter cake is washed with hot water at 90 ℃ until it is clarified and dried to obtain a finished product of about 380kg. |
Last Update：2024-04-09 21:32:03
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CAS: 135-64-8
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CAS: 135-64-8
Tel: 18301782025
Email: 3008007409@qq.com
Mobile: 18021002903
QQ: 3008007409
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