本发明涉及一种靛红的制备方法，该方法包括如下步骤：合成硫酸羟胺；
The invention relates to a preparative method for isatin, including the procedures as follows: compounding hydroxylamine sulphate;
从山苍子提取出的柠檬醛，与硫酸羟胺反应生成柠朦肟，脱水后可得到柠檬腈。
Lemonile was manufactured by the dehydration of citral oxime obtained by the reaction of hydroxylamine sulfuride and citral abstracted from litsea cubeba oil.
并对最新开发的红色磷化、专用无渣磷化、无含亚硝酸盐促进剂(含硫酸羟胺)磷化申请了专利。
And the latest development of the red phosphating, special no residue phosphating, no free of nitrites promoting agents including sulfuric acid amine phosphating applied for patent.
目的本文研究了以乙醛和硫酸羟胺为主要原料合成乙醛肟，并以乙醛肟为原料合成甲硫基乙醛肟的工艺。
OBJECTIVE acetaldoxime was prepared by using acetaldehyde and hydroxylamine sulfate as main materials then methylthio acetaldoxime was synthesized by using the former products as main material.
目的本文研究了以乙醛和硫酸羟胺为主要原料合成乙醛肟，并以乙醛肟为原料合成甲硫基乙醛肟的工艺。
OBJECTIVE acetaldoxime was prepared by using acetaldehyde and hydroxylamine sulfate as main materials then methylthio acetaldoxime was synthesized by using the former products as main material.
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