尿素 Purity≥98%
Urea
品牌：桔子
产品编号：B20910
CAS号：57-13-6
分子式：CH4N2O
分子量：60.04
MDL：MFCD00008022
| 产品名称 : | 尿素 |
|---|---|
| 英文名称 : | Urea |
| 参考名称 : | 碳酰二胺 |
| 参考英文名称 : | Urea |
| CAS号 : | 57-13-6 |
| 分子式 : | CH4N2O |
| 分子量 : | 60.04 |
| SMILES : | NC(N)=O |
| MDL NO : | MFCD00008022 |
| PubChem CID : | 1176 |
| InChIKey : | XSQUKJJJFZCRTK-UHFFFAOYSA-N |
| 储存条件 : | RT&&2-8℃ |
| 参考别名 : | 尿素; Carbonyl diamide; Ureophil |
实验性质
| 熔点 : | 132.70 °C；Ionization potential = 9 eV; Latent heat of fusion = 15.4 kJ/mol (at melting point); Latent heat of sublimation = 87.9 kJ/mol @ 25 °C; Heat of formation = -333.7 kJ/mol @ 25 °C; Decomposition temp = 135 °C |
|---|---|
| 外观 / 形态 : | Colourless to white, prismatic, crystalline powder or small, white pellets；Dry Powder; Other Solid; Wet Solid; Large Crystals; CBI; Liquid; Large Crystals; Liquid; Large Crystals; Liquid; Other Solid; Liquid; Other Solid；Solid；Urea appears as solid odorless white crystals or pellets. Density 1.335 g /cc. Noncombustible.；WHITE CRYSTALS WITH CHARACTERISTIC ODOUR.；White solid with a characteristic odor; [ICSC] |
| 颜色 / 形态 : | White crystals or powder；Tetragonal prisms |
| 沸点 : | Decomposes；Decomposes (NTP, 1992) |
| 密度 : | 1.3230 @ 20 °C/4 °C；On further heating it decomp to biuret, NH3, cyanuric acid; pH of 10% water soln: 7.2; density of water soln (wt/wt): 1.027 @ 10%; 1.054 @ 20%; 1.145 @ 50%；1.335 @25 °C；1.34 at 68 °F (USCG, 1999) - Denser than water; will sink；g/cm³ |
| 溶解性 : | 10 ml 95% alc, 6 ml methanol, 1 ml boiling 95% alc, 20 ml abs alc, 2 ml glycerol; almost insol in chloroform, ether; sol in concn HCl；INSOL IN BENZENE; SOL IN ACETIC ACID；Sol in pyrimidine；In water, 5.45X10+5 mg/l @ 25 °C |
| 蒸气压 : | 0.000012 [mmHg]；1.2X10-5 mm Hg @ 25 °C |
| 解离常数 pKa : | 0.1 (at 21 °C)；pKa = 0.10 at 21 °C (conjugate acid) |
| LogP : | -2.11；log Kow = -2.11 |
| 黏度 : | 1.78 mPa-s (46% solution @ 20 °C); 1.81 mP-s @ 137 °C; 1.90 mPa-s (saturated solution @ 20 °C) |
| 自燃温度 : | Not flammable (USCG, 1999) |
| 热分解说明 : | When heated to decomposition it emits toxic fumes of nitrogen oxides. |
| 气味 : | MAY GRADUALLY DEVELOP SLIGHT ODOR OF AMMONIA, ESP IN PRESENCE OF MOISTURE；Almost odorless |
| pH : | 7.2 (10% solution) |
计算性质
| LogP : | -1.4 |
|---|---|
| 极性表面积 (TPSA) : | 69.1 Ų |
| 氢键供体数 : | 2 |
| 氢键受体数 : | 1 |
| 可旋转键数 : | 0 |
| 精确质量 : | 60.032362755 Da |
| 重原子数 : | 4 |
| 分子复杂度 : | 29 |
资料来源：尿素产品资料页；来源页标注 PubChem CID 1176，资料日期 2026-10-11。
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