CAS号 [106-47-8] 生产工艺 对氯苯胺
CAS名: Benzenamine, 4-chloro-, 参考文献: Beil. 12, 607, E1, 304, E2, 322, E3, 1325, E4, 1166.
用途: 医药,农药。C.I. 冰染偶合组分5, 10, 15。C.I. 酸性黄2。C.I. 酸性橙31。C.I. 碱性黄39。C.I.分散黄22。
C.I. 还原黄5。C.I. 还原红30, 32, 33. C.I. 还原绿22。C.I. 还原棕21。C.I. 颜料红189。C.I.
颜料绿10.
生产工艺文献:
BIOS 986, 68-69. (=胶卷 PB 77764) No. 29.
P-Chloroaniline. (I.G.
Griesheim) 英国人译自德文。抄录如下。
反应式: 本人有加注。德文原件暂未找到。
Iron reduction of
p-chloronitrobenzene (No. 53). Iron
reduction Type 2.
4000 kg. molten p=chloronitrobenzene is charged to 2000
l. water and 25 kg. formic acid and the mixture brought to the boil. 4000 kg.
iron borings is then added at such a rate as to maintain the required rate of
reaction. When half the borings has beeb added or when the reaction tends to
slow down 15 kg. formic acid is added. After completion of reduction the batch
is allowed to settle for 1/4 hr. and the liquid layer run
off from the sludge. The residue in the reducer is then steam distilled for
removal of p-chloroaniline.
The p-chloroaniline-water fractions are then worked up
by vacuum distillation. Formic acid is employed to get faster reduction and if
sulphuric acid is used there is often difficulty in obtaining the required
quality.
Materials usage/tone of product:p-Chloronitrobenzene 1.34 t Yield = 92.3% theory.
Iron borings 1.57 t. Formic acid 0.01 t.
Services consumptions/tone of product:Electricity 353 K.W.H. Steam 14.1 t.H.P. 2.9 t.H.P. Water
62 M3.
Air 292 M3. Reducer
cycle time Addition of nitro 17-20 hr.
Compound Steam distillation 17-19
hr. Total cycle 45 hr.
Analytical data:
p-Chloronitrobenzene C.Pt. not
less than 82.40C.
p-Chloroaniline C.Pt. not less
than 690C.
Plant for p-chloroaniline: - to reduce 40,000 kg. per month of all
chloroanilines.
Annual production: 1937 61,000 kg.
1943 76,000 kg.
PB 25628, 4039. Direction for producing granulated
p-chloroaniline. 1931年10月。 德文。未抄录。美国人介绍如下。
Directions for melting p-chloroaniline and adding the
molten material to cold water to
obtain a granulated product are given.
国内研究动态:
廖 齐 周 莹 等 Fe-Al 复合催化剂催化水合肼选择性还原硝基制备对氯苯胺[J]染料与染色,2004, 5, 279-280 (258).
1.2.1 对氯硝基化合物的还原:
在250 ml三口烧瓶中,加入0.5 g已处理活性炭,对硝基氯苯1.57 g (10 mmol), 10 ml的FeCl3溶液(0.01 mol/L), 1 ml的
AlCl3溶液(0.01 mol/L)及50 ml乙醇。搅拌下加热溶解对氯硝基苯,控制温度为700C,缓慢滴加80%水合肼1.26
g(20 mmol),滴加时间控制在20分钟左右。滴加完毕后,开始加热回流,每10分钟取样一次,用色谱检测。产率为84.6%
其余,略。 参考文献:7篇。
张天永 由兰英 张友兰 对氯苯胺制备方法研究进展 [J] 染料与染色,2004, 6, 365-366 (380) 摘录如下。
1 金属粉还原法。2 硫化物还原法。3 电化学还原法。4 CO还原法。5 催化加氢还原法。
6 硼氢化物还原法。7 用NaSeH 还原 8 水合肼对硝基化合物的还原。9 光催化还原法。
参考文献: 19篇。
加注: 以上抄录,仅供参考。
陈忠源 2017年1月10日 于 无锡 明辉国际。