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CAS RN: 100-02-7 | 产品编码: N0220
4-Nitrophenol
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技术规格
| Appearance | White to Light yellow to Green powder to crystal |
| Purity(GC) | min. 99.0 % |
| Purity(Neutralization titration) | min. 99.0 % |
| Melting point | 112.0 to 116.0 °C |
| Solubility in EtOH | almost transparency |
| Transition interval(pH) | (very pale yellow)4.8 to 7.6(yellow) |
| NMR | confirm to structure |
物性（参考值）
| 熔点 | 114 °C |
| 沸点 | 279 °C |
| 水溶性 | 微溶 |
| 在水中的溶解度 | 12.4 g/l 20 °C |
| 溶解性（可溶于） | 醇, 乙醚 |
GHS
| 象形图 |
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| 信号词 | Danger |
| 危险性说明 | H301 : Toxic if swallowed. H312 + H332 : Harmful in contact with skin or if inhaled. H315 : Causes skin irritation. H319 : Causes serious eye irritation. H370 : Causes damage to organs. H372 : Causes damage to organs through prolonged or repeated exposure. H373 : May cause damage to organs through prolonged or repeated exposure. H317 : May cause an allergic skin reaction. H401 : Toxic to aquatic life. |
| 防范说明 | P501 : Dispose of contents/ container to an approved waste disposal plant. P273 : Avoid release to the environment. P272 : Contaminated work clothing should not be allowed out of the workplace. P260 : Do not breathe dust/ fume/ gas/ mist/ vapors/ spray. P270 : Do not eat, drink or smoke when using this product. P271 : Use only outdoors or in a well-ventilated area. P264 : Wash skin thoroughly after handling. P280 : Wear protective gloves/ protective clothing/ eye protection/ face protection. P337 + P313 : If eye irritation persists: Get medical advice/ attention. P305 + P351 + P338 : IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. P308 + P311 : IF exposed or concerned: Call a POISON CENTER/doctor. P362 + P364 : Take off contaminated clothing and wash it before reuse. P333 + P313 : If skin irritation or rash occurs: Get medical advice/ attention. P301 + P310 + P330 : IF SWALLOWED: Immediately call a POISON CENTER/doctor. Rinse mouth. P302 + P352 + P312 : IF ON SKIN: Wash with plenty of water.Call a POISON CENTER/doctor if you feel unwell. P304 + P340 + P312 : IF INHALED: Remove person to fresh air and keep comfortable for breathing. Call a POISON CENTER/doctor if you feel unwell. P405 : Store locked up. |
相关法规
| RTECS# | SM2275000 |
运输信息
| UN编号 | UN1663 |
| 类别 | 6.1 |
| 包装类别 | III |
| HS编码* | 2908.99-000 |
应用
Condensing Agent
Experimental procedure: Boc-Gly-OH (1.98 kg, 11.3 mol) and 4-nitrophenol (1.73 kg, 12.43 mol, 1.1 eq.) are dissolved in dry dioxane (25 L), a solution of DCC (2.8 kg, 13.56 mol, 1.2 eq.) in dry dioxane (10 L) is added and the mixture is stirred for 8-10 h. After cooling for 2 h, the precipitate is removed and the filtrate is used directly for next reaction without purification. The mixture of glycine (0.94 kg, 12.43 mol, 1.1 eq.) and NaHCO3 (1.05 kg, 12.43 mol, 1.1 eq.) in H2O (10 L) is slowly added to the solution of Boc-Gly-ONp in dioxane (25 L). The solution is stirred at about 25 °C for 7 h and then evaporated under reduced pressure. The residue is acidified to a pH 2-3 with 10% citric acid and extracted with EtOAc (3 × 20 L). The organic phase is successively washed with brine (20 L), dried, and evaporated to give Boc-Gly-Gly-OH (2.37 kg, 90%) as a white crystal.
References
- Kilogram-Scale Synthesis of Osteogenic Growth Peptide (10–14) Using a Fragment Coupling Approach
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![4-Nitrophenol (0.25% in Water) [for pH Determination]](/medias/N0161.jpg?context=bWFzdGVyfHJvb3R8MzA2NjJ8aW1hZ2UvanBlZ3xhR1prTDJnM09TODRPVE14TmpZM056TTROalUwTDA0d01UWXhMbXB3Wnd8OTBjNDJhOGViYmU4MDc1MGJlMjE0NmIxZmJlMWExMWFkYzVkOTRmN2UzOGJhMjRkZjhiZTk4OTk5OWUwYzQ2Ng "4-Nitrophenol (0.25% in Water) [for pH Determination]")