Lepidine
Lepidine
CAS: 491-35-0;100108-65-4
Molecular Formula: C10H9N
Lepidine - Names and Identifiers
| Name | Lepidine |
| Synonyms | Lepidine 4-Methylquinoline 4-Methylchinoline 4-Methyl quinoline 4-METHYLQUINUOLINE 4-Methylquinoline, Lepidine Lepidine,(4-Methylquinoline) 4-Methylquinoline,4-Methylquinoline, Lepidine |
| CAS | 491-35-0 100108-65-4 |
| EINECS | 207-734-2 |
| InChIKey | MUDSDYNRBDKLGK-UHFFFAOYSA-N |
Lepidine - Physico-chemical Properties
| Molecular Formula | C10H9N |
| Molar Mass | 143.19 |
| Density | 1.083g/mLat 25°C(lit.) |
| Melting Point | 9-10°C(lit.) |
| Boling Point | 261-263°C(lit.) |
| Flash Point | >230°F |
| Water Solubility | Slightly soluble |
| Solubility | Chloroform (Slightly), Methanol (Slightly) |
| Vapor Presure | 0.0182mmHg at 25°C |
| Appearance | Liquid |
| Color | Pale Orange |
| Merck | 14,5441 |
| BRN | 110926 |
| pKa | 5.67(at 20℃) |
| Storage Condition | Refrigerator |
| Sensitive | Light Sensitive |
| Refractive Index | n20/D 1.620(lit.) |
| Physical and Chemical Properties | Colorless oily liquid. |
Lepidine - Risk and Safety
| Risk Codes | R36/37/38 - Irritating to eyes, respiratory system and skin. R68 - Possible risk of irreversible effects R40 - Limited evidence of a carcinogenic effect |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 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. S22 - Do not breathe dust. |
| WGK Germany | 3 |
| RTECS | OH0316000 |
| FLUKA BRAND F CODES | 8-10 |
| TSCA | Yes |
| HS Code | 29334900 |
Lepidine - Reference Information
| NIST chemical information | Information provided by: webbook.nist.gov (external link) |
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| use | used as an intermediate for dyes, medicines, and photosensitive materials. |
| production method | the product can be recovered from kerosene. The 260-267 ℃ fraction cut by rectification in heavy pyridine residue oil contains 4-methylquinoline 35%-56%. The fraction is reacted with concentrated sulfuric acid with a concentration of 98% in alcohol, and the temperature is controlled at 35°C to generate sulfonate. After cooling, crystallization, and filtration, the resulting crystallization is recrystallized with 3 times the weight of alcohol to obtain melting point More than 220°C crystals, and then 20% deep ammonia water is decomposed to pH = 8 at room temperature to obtain crude 4-methylquinoline. Then it is distilled in the distillation column of 20 theoretical plates, and the fraction at 262.3-266.8 ℃ is cut to obtain 4-methylquinoline with purity greater than 95%. |
| category | toxic substances |
| flammability hazard characteristics | thermal decomposition of toxic nitrogen oxide gas |
| storage and transportation characteristics | warehouse ventilation and low temperature drying; separate from food raw materials storage and transportation |
| fire extinguishing agent | carbon dioxide, sand, foam, water |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-09 20:02:46
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