2-phenyl-1h-indol
2-Phenylindole
CAS: 948-65-2
Molecular Formula: C14H11N
2-phenyl-1h-indol - Names and Identifiers
| Name | 2-Phenylindole |
| Synonyms | NSC 15776 2-phenyl-indol a-Phenylindole 2-Phenylindole 2-PHENYL INDOLE 2-phenyl-1h-indol 2-phenyl-1H-indole PHENYLINDOL,ALPHA- 1H-Indole,2-phenyl- potassium 2-phenylindol-1-ide |
| CAS | 948-65-2 |
| EINECS | 213-436-3 |
| InChI | InChI=1/C14H10N.K/c1-2-6-11(7-3-1)14-10-12-8-4-5-9-13(12)15-14;/h1-10H;/q-1;+1 |
2-phenyl-1h-indol - Physico-chemical Properties
| Molecular Formula | C14H11N |
| Molar Mass | 193.24 |
| Density | 1.1061 (rough estimate) |
| Melting Point | 188-190 °C (lit.) |
| Boling Point | 250 °C/10 mmHg (lit.) |
| Flash Point | 250°C/10mm |
| Solubility | almost transparency in Methanol |
| Vapor Presure | 7.18E-07mmHg at 25°C |
| Appearance | White to light brown powder |
| Color | Off-white to beige or slightly green |
| pKa | 16.80±0.30(Predicted) |
| Storage Condition | Sealed in dry,Room Temperature |
| Refractive Index | 1.5850 (estimate) |
| MDL | MFCD00005608 |
| Physical and Chemical Properties | Yellow or puree red leaf-like crystals. |
| Use | Used as PVC cellophane stabilizer and dye intermediate |
2-phenyl-1h-indol - Risk and Safety
| Hazard Symbols | Xi - Irritant |
| Risk Codes | R37/38 - Irritating to respiratory system and skin. R41 - Risk of serious damage to eyes |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S39 - Wear eye / face protection. |
| WGK Germany | 3 |
| RTECS | NM1272500 |
| TSCA | Yes |
| HS Code | 29309090 |
2-phenyl-1h-indol - Nature
Open Data Verified Data
yellow or puree red leaf-like crystals. Melting point of 189 deg C, boiling point above 360c. Soluble in ether, benzene, acetic acid, chloroform and hot carbon disulfide, micro-soluble in hot water, insoluble in dilute inorganic acid. In the air gradient Green, can sublimate.
Last Update：2024-01-02 23:10:35
2-phenyl-1h-indol - Preparation Method
Open Data Verified Data
In xylene medium, after condensation with acetophenone and phenylhydrazine, ring closure in the presence of zinc chloride, acid boiling, Suction filtration, water washing and pumping dry to obtain the finished product.
Last Update：2022-01-01 10:53:45
2-phenyl-1h-indol - Use
Open Data Verified Data
production of cationic orange 2GL. Cationic red BL, cationic red 2BL and other dyes intermediates.
Last Update：2022-01-01 10:53:44
2-phenyl-1h-indol - Safety
Open Data Verified Data
- toxic. The workplace should be strengthened ventilation, equipment should be sealed, the operator should wear protective equipment.
- store in a cool and ventilated warehouse, store and transport according to the provisions of toxic chemicals.
Last Update：2022-01-01 10:53:45
2-phenyl-1h-indol - Reference Information
| NIST chemical information | information provided by: webbook.nist.gov (external link) |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| Application | This product is mainly used as a cationic dye intermediate for the production of cationic orange 2GL, cationic red BL, cationic red 2GL, when used in dye production, it is often first methylated to further prepare n-methyl-2-phenylindole. The methylating agent was dimethyl sulfate, and the reaction was carried out in a chlorobenzene solvent at 60-65 ° C. The yield was 83.5%. 2-phenylindole is also used as a heat stabilizer for emulsion polyvinyl chloride. used as PVC cellophane stabilizer and dye intermediate |
| production method | 2-phenylindole is prepared by condensing phenylhydrazine with acetophenone and then ring-closing in the presence of zinc chloride. In addition to the Fisher method described above, bromoacetophenone can be heated to react with an excess of aniline, or N-(2-methylphenyl) benzamide and sodium ethoxide can be heated at 360-380 °c in air, 2-phenyl Indole can be prepared. Raw material consumption quota: acetophenone (98%)735kg/t, phenylhydrazine (free 100%)675kg/t, xylene 900kg/t, glacial acetic acid 15kg/t, zinc chloride 1230kg/t, hydrochloric acid (30%)810kg/t. |
Last Update：2024-04-09 21:54:55
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