N-Methylurethane
ethyl methylcarbamate
CAS: 105-40-8
Molecular Formula: C4H9NO2
N-Methylurethane - Names and Identifiers
N-Methylurethane - Physico-chemical Properties
| Molecular Formula | C4H9NO2 |
| Molar Mass | 103.12 |
| Density | 1.01 |
| Boling Point | 170 °C |
| Flash Point | 61 °C |
| Water Solubility | 410g/L(temperature not stated) |
| Vapor Presure | 1.36mmHg at 25°C |
| Appearance | clear liquid |
| Color | Colorless to Almost colorless |
| pKa | 13.02±0.46(Predicted) |
| Storage Condition | Room Temprature |
| Refractive Index | 1.418-1.42 |
| MDL | MFCD00041924 |
| Physical and Chemical Properties | Colorless liquid. Boiling point 170 C, 80 C (2.0kPa). Relative density 1.035(15 degrees C), refractive index 1.421(15 degrees C). Soluble in alcohol, 16 ℃ when 100 water soluble 69 points. |
N-Methylurethane - Risk and Safety
| Hazard Symbols | Xn - Harmful |
| Risk Codes | 40 - Limited evidence of a carcinogenic effect |
| Safety Description | 36/37 - Wear suitable protective clothing and gloves. |
| RTECS | FC2625000 |
| HS Code | 29161900 |
N-Methylurethane - Reference Information
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| use | organic synthesis intermediate. |
| production method | stir and cool the ether and methylamine aqueous solution to 5 ℃, add ethyl chloroformate, when half is added, add 40% potassium hydroxide sodium solution at the same time, maintain below 5 ℃, and add ethyl chloroformate and sodium hydroxide solution at the same time. Let stand for 15min, separate the ether layer, evaporate the ether, distill the residue under reduced pressure, collect the fraction at 55-60 ℃(16kPa) to obtain ethyl carbamate with a yield of 88-90%. |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-09 02:00:05
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