Lysidene
2-Methyl-2-imidazoline
CAS: 534-26-9
Molecular Formula: C4H8N2
Lysidene - Names and Identifiers
| Name | 2-Methyl-2-imidazoline |
| Synonyms | Lysidene Methyl glyoxaidine 2-methyl-2-imidazolin 2-Methyl-2-imidazoline 2-Imidazoline, 2-methyl- 2-Methyl-delta2-imidazoline 4,5-dihydro-2-methyl-1h-imidazol 4,5-Dihydro-2-methyl-1H-imidazode 4,5-Dihydro-2-methyl-1H-imidazole 2-methyl-4,5-dihydro-1H-imidazole 1H-Imidazole,4,5-dihydro-2-methyl- 2-methyl-4,5-dihydro-1H-imidazol-3-ium |
| CAS | 534-26-9 |
| EINECS | 208-596-6 |
| InChI | InChI=1/C4H8N2/c1-4-5-2-3-6-4/h2-3H2,1H3,(H,5,6)/p+1 |
Lysidene - Physico-chemical Properties
| Molecular Formula | C4H8N2 |
| Molar Mass | 84.12 |
| Density | 0.8938 (rough estimate) |
| Melting Point | 87°C (dec.)(lit.) |
| Boling Point | 144°C 140mm |
| Flash Point | 197°C |
| Water Solubility | Soluble in water, alcohol, chloroform. |
| Vapor Presure | 0.493mmHg at 25°C |
| Appearance | Powder or Crystals or Needles |
| Color | White to yellow or colorless to yellow |
| Merck | 14,5635 |
| BRN | 104225 |
| pKa | 10.98±0.40(Predicted) |
| Storage Condition | Room Temprature |
| Refractive Index | 1.5037 (estimate) |
| MDL | MFCD00051490 |
| Physical and Chemical Properties | Needle-like crystals. Melting Point 107 °c (105 °c), boiling point 195-198 °c. Soluble in water, ethanol and chloroform, insoluble in ether, insoluble in benzene and carbon tetrachloride. |
Lysidene - Risk and Safety
| Hazard Symbols | Xi - Irritant |
| Risk Codes | 36/37/38 - Irritating to eyes, respiratory system and skin. |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S37/39 - Wear suitable gloves and eye/face protection |
| UN IDs | 1759 |
| WGK Germany | 3 |
| RTECS | NI4804995 |
| TSCA | Yes |
| Packing Group | III |
Lysidene - Reference Information
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| Application | 2-methylimidazoline can be used as an intermediate in pharmaceutical synthesis, such as preparing 1-ethyl-2-methylimidazoline. 2-Methyl-2-imidazoline can be used as a corrosion inhibitor. |
| preparation | 2-methyl imidazoline is prepared as follows: firstly, 62g of ethylenediamine and 5.2g of sulfur are added into a reaction vessel, stirred, heated and refluxed, slowly added 6g of acetonitrile at 100 ℃ to control the return flow rate, slowly heated to 150-160 ℃ for reaction for 1 hour after dropping, and then added 11g of zinc powder in batches, after the zinc powder is added, the heat preservation reaction is carried out for 2 hours, and finally the fraction is collected at 190-206 ℃, I .e. 2-methyl imidazoline. |
| Use | Used as an intermediate in organic synthesis. |
| Production method | It is obtained by cycliphing ethylenediamine and acetonitrile. Put part of acetonitrile into a dry reaction pot first, then add ethylenediamine and sulfur, stir and heat to 100 ℃, and slowly add the remaining amount of acetonitrile. After reacting at 150-160 ℃ for 1h, zinc powder was added to continue the reaction for 2h. Distillation, collect 190-206 ℃ fraction, that is, 2-methyl imidazoline. |
Last Update：2024-04-10 22:29:15
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