quineline, 2-methyl
Quinaldine
CAS: 91-63-4
Molecular Formula: C10H9N
quineline, 2-methyl - Names and Identifiers
| Name | Quinaldine |
| Synonyms | chinaldine Quinaldine 2-Methylchinolin 2-Methylquinoline 2-Methylpuinoiline quineline, 2-methyl alpha-methylquinoline 2- Methyl Quinoline (Quinaldine) |
| CAS | 91-63-4 |
| EINECS | 202-085-1 |
quineline, 2-methyl - Physico-chemical Properties
| Molecular Formula | C10H9N |
| Molar Mass | 143.19 |
| Density | 1.058g/mLat 25°C(lit.) |
| Melting Point | -2 °C |
| Boling Point | 248 °C |
| Flash Point | 175°F |
| Water Solubility | PRACTICALLY INSOLUBLE |
| Solubility | chloroform: soluble(lit.) |
| Vapor Presure | <0.1 hPa (20 °C) |
| Appearance | Crystalline Powder |
| Color | White to slightly yellow |
| Merck | 14,8047 |
| BRN | 110309 |
| pKa | 5.83(at 20℃) |
| PH | 6.9 (H2O, 20℃)(saturated aqueous solution) |
| Storage Condition | Store below +30°C. |
| Stability | Stable, but may be light sensitive. Combustible. Incompatible with strong oxidizing agents. |
| Sensitive | Light Sensitive |
| Refractive Index | n20/D 1.612(lit.) |
| Physical and Chemical Properties | density 1.058 melting point -2°C boiling point 248°C refractive index 1.6108-1.6138 flash point 79°C water-soluble PRACTICALLY INSOLUBLE |
| Use | Used as a dye, pharmaceutical intermediates |
quineline, 2-methyl - Risk and Safety
| Hazard Symbols | Xn - Harmful |
| Risk Codes | R21/22 - Harmful in contact with skin and if swallowed. R68 - Possible risk of irreversible effects R36/37/38 - Irritating to eyes, respiratory system and skin. |
| Safety Description | S36 - Wear suitable protective clothing. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. |
| UN IDs | NA 1993 / PGIII |
| WGK Germany | 3 |
| RTECS | UZ9625000 |
| FLUKA BRAND F CODES | 8-23 |
| TSCA | Yes |
| HS Code | 29334990 |
| Toxicity | LD50 orally in rats: 1.23 g/kg (Smyth) |
quineline, 2-methyl - Nature
Open Data Verified Data
colorless transparent oily liquid. Boiling point 261~263 degrees C, freezing point O. Slightly soluble in water, soluble in alcohol, benzene, ether. It turned red-brown in light.
Last Update：2024-01-02 23:10:35
quineline, 2-methyl - Preparation Method
Open Data Verified Data
derived from the reaction of 2-chloro-4-methylquinoline with sodium acetate in the presence of a palladium-on-carbon catalyst.
Last Update：2022-01-01 10:53:31
quineline, 2-methyl - Use
Open Data Verified Data
This product is used to make quinine antimalarial drugs; It can also make color film sensitizers and dyes such as quinoline blue.
Last Update：2022-01-01 10:53:31
quineline, 2-methyl - Reference Information
| LogP | 2.59 |
| NIST chemical information | information provided by: webbook.nist.gov (external link) |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| Use | for the preparation of color film alkaline agent, photographic photosensitizer, rubber vulcanization accelerator, lubricant antioxidant, pesticides, bactericides and dyes, etc. used as dye and pharmaceutical intermediate used in organic synthesis, and also used as determination solvent. |
| production method | can be extracted from coal tar or can be prepared by a synthetic method. The quinoline sulfate base solution obtained by washing the naphthalene oil fraction and the washing oil fraction with sulfuric acid is evaporated and blown with steam to remove impurities such as neutral oil, and then decomposed with alkali or ammonia, after dehydration of the separated crude quinoline and its homolog, the crude quinoline and its homolog are distilled with a high efficiency distillation column with 60 theoretical plates, and the fraction section with boiling range of 237.5-239.5 ℃ is cut out, the crude quinoline can be obtained; The fraction section with boiling range of 243-246 ° C. Is continued to be cut as a raw material for extracting Isoquinoline and 2-methylquinoline; The fraction section with boiling range of 260-267 ° C. Is continued to be cut, as a raw material for extracting 4-methylquinoline. The fraction at 243-246 ° C. Separated 2-methylquinoline in the form of hydrochloride, the crystals of 2-methylquinoline hydrochloride were washed with benzene, and then the salt was decomposed with 20% sodium hydroxide solution, when the fraction of 246.6-247.4 ℃ is cut by distillation, 2-methylquinoline with a purity of more than 95% can be obtained. 2-methylquinoline was synthesized by the reaction of aniline with 2, 3-dibromobutanal. |
| category | toxic substances |
| toxicity grade | poisoning |
| Acute toxicity | oral-rat LD50: 1230 mg/kg |
| stimulation data | Skin-rabbits 10 mg/24 h mild; eye-rabbit 0.75 mg severe |
| flammability hazard characteristics | thermal decomposition of toxic nitrogen oxide gas |
| storage and transportation characteristics | The warehouse is ventilated and dried at low temperature; It is stored and transported separately from food raw materials |
| fire extinguishing agent | carbon dioxide, sand, foam, water |
Last Update：2024-04-09 15:16:53
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