根据提供的信息,二硝基苯酚的制备方法、用途及其变色范围如下:
制备方法原料准备:需要苯酚(C6H5OH)和浓硫酸。
反应步骤:
后处理:
有机合成:二硝基苯酚是一种重要的有机合成中间体,在制药、染料等多个领域有广泛应用。例如,可以用于合成一些特定的药物成分或染料分子结构上的构建。
酸碱指示剂:
二硝基苯酚不仅具有重要的化学合成价值,还因其独特的物理性质——在不同pH值下表现出的颜色变化——而在科学研究和教学中得到了广泛应用。正确地掌握其制备方法及了解其性质对于深入理解酸碱平衡原理及其实际应用具有重要意义。
中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
4-氨基-2,6-二硝基-苯酚 | isopicramic acid | 17973-92-1 | C6H5N3O5 | 199.123 |
2,6-二硝基苯甲醚 | 2,6-dinitroanisole | 3535-67-9 | C7H6N2O5 | 198.135 |
硝苯酚 | 2-hydroxynitrobenzene | 88-75-5 | C6H5NO3 | 139.111 |
N-(4-羟基-3,5-二硝基苯基)乙酰胺 | 2,6-dinitro-4-acetylaminophenol | 118828-85-6 | C8H7N3O6 | 241.16 |
—— | 2,6-dinitrophenyl 2,4,6-trinitrophenyl ether | 103612-93-7 | C12H5N5O11 | 395.199 |
1,3-二硝基苯 | 1,3-Dinitrobenzene | 99-65-0 | C6H4N2O4 | 168.109 |
2,3-二硝基苯酚 | 2,3-dinitrophenol | 66-56-8 | C6H4N2O5 | 184.108 |
4-羟基-3,5-(二硝基苯)胂酸 | (4-hydroxy-3,5-dinitro-phenyl)-arsonic acid | 6269-50-7 | C6H5AsN2O8 | 308.036 |
4-羟基-3,5-二硝基苯磺酸 | 4-hydroxy-3,5-dinitro-benzenesulfonic acid | 67329-16-2 | C6H4N2O8S | 264.172 |
2,6-二硝基苯胺 | 2,6-dinitroaniline | 606-22-4 | C6H5N3O4 | 183.123 |
中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
2 - 氨基- 6 -硝基苯酚 | 2-amino-6-nitrophenol | 603-87-2 | C6H6N2O3 | 154.125 |
苦味酸 | 2,4,6-Trinitrophenol | 88-89-1 | C6H3N3O7 | 229.106 |
—— | 2,6-dinitrohydroquinone | 13985-45-0 | C6H4N2O6 | 200.108 |
2,6-二硝基苯甲醚 | 2,6-dinitroanisole | 3535-67-9 | C7H6N2O5 | 198.135 |
4-氯-2,6-二硝基苯酚 | 4-chloro-2,6-dinitrophenol | 88-87-9 | C6H3ClN2O5 | 218.553 |
—— | 2-Methylamino-6-nitro-phenol | —— | C7H8N2O3 | 168.152 |
—— | 4-iodo-2,6-dinitrophenol | 89488-54-0 | C6H3IN2O5 | 310.005 |
4-溴-2,6-二硝基苯酚 | 4-bromo-2,6-dinitrophenol | 40466-95-3 | C6H3BrN2O5 | 263.004 |
2-氨基-4-硝基苯酚 | 2-hydroxy-5-nitroaniline | 99-57-0 | C6H6N2O3 | 154.125 |
—— | 2,6-dinitrophenyl 2,4,6-trinitrophenyl ether | 103612-93-7 | C12H5N5O11 | 395.199 |
—— | 2,6-dinitrophenyl acetate | 1523-09-7 | C8H6N2O6 | 226.145 |
—— | 2-bromo-4,6-dinitrophenol | 2316-50-9 | C6H3BrN2O5 | 263.004 |
—— | N-(2-Hydroxy-3-nitrophenyl)-N'-phenylurea | —— | C13H11N3O4 | 273.248 |
—— | 2-chloro-N-(2-hydroxy-3-nitrophenyl)acetamide | 85126-68-7 | C8H7ClN2O4 | 230.608 |
2,6-二硝基苯胺 | 2,6-dinitroaniline | 606-22-4 | C6H5N3O4 | 183.123 |
The reactions of 1-fluoro-2,4- and -2,6-dinitrobenzene with certain N,N- dialkylamines in dimethyl sulfoxide solution in the presence of potassium carbonate give the corresponding dinitrophenyl N,N- dialkylcarbamates as well as the corresponding N,N- dialkyldinitroanilines. The extent of carbamate formation is governed by steric factors. The corresponding reactions of 1-fluoro-4-nitrobenzene with diisopropylamine and di-s-butylamine give poor yields of the corresponding 4-nitrophenyl N,N- dialkylcarbamates but none of the corresponding N,N-dialkyl-4-nitroanilines; in these reactions, the major product is 4,4'-dinitrodiphenyl ether. The 1H and 13C n.m.r. spectra of the 2,4- and 2,6-dinitrophenyl N,N- dialkylcarbamates reveal that their aliphatic protons and carbon atoms are magnetically non-equivalent.