627-12-3
N-Propylcarbamate
CAS: 627-12-3
Molecular Formula: C4H9NO2
627-12-3 - Names and Identifiers
627-12-3 - Physico-chemical Properties
| Molecular Formula | C4H9NO2 |
| Molar Mass | 103.12 |
| Density | 0.9809 (estimate) |
| Melting Point | 61-63°C(lit.) |
| Boling Point | 92-93°C/12mmHg(lit.) |
| Water Solubility | 200.1g/L(37 ºC) |
| Solubility | DMSO (Slightly), Methanol (Slightly) |
| Appearance | Solid |
| Color | White to Off-White |
| pKa | 13.54±0.50(Predicted) |
| Storage Condition | Sealed in dry,Room Temperature |
| Refractive Index | 1.4228 (estimate) |
627-12-3 - Risk and Safety
| Hazard Symbols | Xn - Harmful |
| Risk Codes | R22 - Harmful if swallowed R36/37/38 - 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. S36 - Wear suitable protective clothing. |
| RTECS | FD0875000 |
627-12-3 - Reference Information
| Application | Organic carbonates such as propyl carbonates are an important intermediate in the chemical field, which can be used as methylation reactions and methyl ester groups Reagents in the reaction, these reactions are used to prepare phenol ether, quaternary ammonium salt, urea, urethane, isocyanate and polycarbonate. These wide applications constitute a great demand for commercial production of organic carbonates. |
| Preparation | The preparation of propyl carbonate is divided into the following two steps: Step 1): At a calcination temperature of 350°C, the catalyst precursor La(NO3)3 · 6H2O is calcined in air, and the calcination time is 4 hours. 54.0g of methanol, 6.0g of urea and 0.5g of catalyst as previously prepared (I. e., 8.3% by weight of urea) were added to the reactor. At autogenous pressure (about 19.5 atmospheres) and 170°C, the reaction was carried out for 4 hours. During the reaction, the catalyst is prepared by releasing the by-product ammonia through a valve located above the reflux column. Step 2): 40.8g of propanol, 6.0g of urea and 0.8g of the catalyst as prepared before (I. e., 13.3% by weight of urea used) are added to the reactor. At autogenous pressure (about 12.2 atmospheres) and 180°C, the reaction was carried out for 6 hours. The yields of dipropyl carbonate (DPC) and propyl carbamate (propyl carbonate, PC) were 54.2 and 18.3 wt%, respectively. |
| (IARC) carcinogen classification | 3 (Vol. 12, Sup 7) 1987 |
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-09 21:31:59
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