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CAS号 [88-43-7] 生产工艺 2-氯-5-氨基苯磺酸 |
CAS号 [88-43-7] 生产工艺 2-氯-5-氨基苯磺酸
CAS名: Benzenesulfonic acid, 5-amino-2-chloro-, 参考文献:Beil. 14,683; E2,430.
用途: 酸性黄26,120。酸性蓝114。直接黄42。媒介绿15。颜料红58, 58:1, 58:2, 58:3, 58:4。有机合成。
生产工艺文献:
BIOs 1153, 184. (=胶卷PB 85687) 4-Chloroaniline-3-sulphonic acid
(4-Chlorometanilc acid) (Leverkusen) 英国人译自德文。
反应式: 本人有加注,译者未说明译自哪个德文原件。
Reduction: 磺化物,见CAS号[96-73-1].
The reduction vessel is charged with 4600 l. of water
(or liquors from previous reductions), 1200 kg. of iron powder and 20 kg. of
30% hydrochloric acid and heated to 950C. The p-chloronitrobenzene
sulphonic acid is gradually fed in and agitation continued until reduction is
complete on a laboratory test. When the reduction has been passed by the
laboratory, 80 kg. of soda ash are added to neutralize followed by 580 kg. of
34.5% caustic liquor. The iron oxide is screened off and washed well with hot
water. The mother liquor, which has a density of 150Be’ or Sp. Gr.
1.116, is now made acid with 1000 kg. of 380Be’ H2SO4 , cooled with agitation to 250C. and filtered on a nutsche. The
nutsche cake is washed acid-free with 2000-3000 l. of water. The mother liquor
has a density of 17-190Be’ or Sp. Gr. 1.152 and the wash liquors are
used again for the next reduction.
Yield: 1430 kg. of
4-chloroaniline-3-sulphonic acid as a 60-65% paste = 80.5% theory.
中文译文, 张澍声。《精细化工中间体工业生产技术》 1996年。 p. 44. 磺化物,见CAS号[96-73-1]. 抄录如下。
还原: 还原锅中加入4600 升水(或上次还原的液体),1200 公斤铁粉和20公斤30% 盐酸,加热到 950C。逐渐加入对氯硝基苯磺酸,继续搅拌直至还原完全(经实验室检验)。加入80 kg 碳酸钠进行中和,随后加入580 kg 34.5% 苛性钠溶液。过滤去铁泥,用热水很好洗涤。滤液比重1.116,用1000 kg 35%硫酸酸化,搅拌冷却到250C.过滤,滤饼用2000-3000升水洗至不含酸。滤液比重1.152,洗水再用于下次还原。
得到1430 kg 4-氯苯胺-3-磺酸的60-65%滤饼,收率80.5% (抄注: Nutsche 是抽滤槽)
PB 25602, 501-505.No. 2561-0. 4-Chlorometanilic acid.(含磺酸和还原)未抄录。
PB 25623, 285. 2561. 4-Chlorometanilsaeure Loesung.(还原制备液体产品 – 1934年)未抄录。
PB 25628, 3717-3721. 4-Chloroaniline-3-sulfonic acid. (General Aniline Works)1936年7月生产工艺 未抄录。
美国人介绍:The reduction of
4-chloro-1-nitrobenzene-3-sulfonic acid by means of iron, and the purification of the product are described. In English. 本胶卷有多家单位收藏。本人收藏有它的目录。
PB 70063, 407-410. Manufacture of 4-chloroaniline-3-sulfonic
acid.(1945年9月13日德文生产工艺)未抄录。
加注:
大部分胶卷,本人未抄录目录,所以生产工艺年代不详。从原件页数看,BIOS译文应该是摘译文。这些资料是否有用,请读者评述,当然作为参考文献还是可以的。
陈忠源 2017年4月13日 于
无锡 明辉国际。 文章作者:陈忠源 |