(1,1-Dimethylethyl)urea
tert-butylurea
CAS: 1118-12-3
Molecular Formula: C5H12N2O
(1,1-Dimethylethyl)urea - Names and Identifiers
(1,1-Dimethylethyl)urea - Physico-chemical Properties
| Molecular Formula | C5H12N2O |
| Molar Mass | 116.16 |
| Density | 1.0551 (rough estimate) |
| Melting Point | ~185°C (dec.) |
| Boling Point | 217.23°C (rough estimate) |
| Flash Point | 52.8°C |
| Vapor Presure | 2.04mmHg at 25°C |
| Appearance | Crystals or Crystalline Powder |
| Color | White |
| BRN | 1744501 |
| pKa | 14.37±0.46(Predicted) |
| Storage Condition | Room Temprature |
| Refractive Index | 1.4432 (estimate) |
| Physical and Chemical Properties | Needle-like crystals are precipitated from water or alcohol. The melting point was 172 ° C. (decomposition), and 183-184 ° C. (decomposition) was also reported. |
(1,1-Dimethylethyl)urea - Risk and Safety
| Hazard Symbols | Xn - Harmful |
| Risk Codes | R37 - Irritating to the respiratory system R20/21/22 - Harmful by inhalation, in contact with skin and if swallowed. |
| Safety Description | S22 - Do not breathe dust. S24/25 - Avoid contact with skin and eyes. |
| WGK Germany | 2 |
| RTECS | YS3680000 |
| HS Code | 29241900 |
(1,1-Dimethylethyl)urea - Reference Information
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| use | pharmaceutical intermediates. |
| Production method | is obtained by condensation of tert-butanol and urea. |
| category | toxic substances |
| toxicity classification | poisoning |
| acute toxicity | oral-mouse LD50: 3050 mg/kg |
| flammability hazard characteristics | thermal decomposition discharges toxic nitrogen oxide smoke |
| storage and transportation characteristics | warehouse ventilation and low temperature drying |
| fire extinguishing agent | water, foam, carbon dioxide, dry powder |
Last Update：2024-04-09 21:01:54
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