| Names | |
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IUPAC name
1,3-Dimethylurea
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| Identifiers | |
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3D model (Jmol)
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| ChEBI | |
| ChemSpider | |
| ECHA InfoCard | 100.002.272 |
| KEGG | |
| MeSH | 1,3-dimethylurea |
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PubChem CID
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| RTECS number | YS9868000 |
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| Properties | |
| C3H8N2O | |
| Molar mass | 88.11 g·mol−1 |
| Appearance | Colorless, waxy crystals |
| Odor | Odorless |
| Density | 1.142 g mL−1 |
| Melting point | 104.4 °C; 219.8 °F; 377.5 K |
| Boiling point | 269.1 °C; 516.3 °F; 542.2 K |
| 765 g L−1 | |
| -55.1·10−6 cm3/mol | |
| Thermochemistry | |
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Std enthalpy of
formation (ΔfH |
−312.1–−312.1 kJ mol−1 |
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Std enthalpy of
combustion (ΔcH |
−2.0145–−2.0089 MJ mol−1 |
| Hazards | |
| R-phrases (outdated) | H373 R22, R24/25 |
| S-phrases (outdated) | P260, P314, P501H373 |
| Flash point | 157 °C (315 °F; 430 K) |
| Lethal dose or concentration (LD, LC): | |
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LD50 (median dose)
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4 g kg−1(oral, rat) |
| Related compounds | |
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Related ureas
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Carmustine |
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Related compounds
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Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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| Infobox references | |
Dimethylurea (DMU) (IUPAC systematic name: 1,3-Dimethylurea ) is a urea derivative and used as an intermediate in organic synthesis. It is a colorless crystalline powder with little toxicity.
1,3-Dimethylurea is used for synthesis of caffeine, theophylline, pharmachemicals, textile aids, herbicides and others. In the textile processing industry 1,3-dimethylurea is used as intermediate for the production of formaldehyde-free easy-care finishing agents for textiles. The estimated world production of DMU is estimated to be less than 25,000 tons.