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Keywords glyoxalic acid;glyoxal;oxalic acid; 乙醛酸;乙二醛;草酸;
Keywords glyoxal;glyoxalic acid;urea;catalyst;allantoin; 乙醛酸;尿素;缩合;催化剂;尿囊素;
Keywords Glyoxalic acid thiosemicarbazone photometry Copper; 乙醛酸缩氨基硫脲;光度法;铜;
Keywords glyoxal;glyoxalic acid;catalytic oxydation; 尿囊素;乙二醛;乙醛酸;氧化;催化氧化;
Keywords glyoxalic acid;electrocatalytic oxidation;glyoxal; 乙醛酸;电催化氧化;乙二醛;
Keywords glyoxal;glyoxalic acid;condensation;allantoin; 乙二醛;乙醛酸;合成;尿囊素;
Keywords glyoxal;glyoxalic acid;derivative ratio;oximation reaction; 乙二醛;乙醛酸;比值导数法;肟化反应;
Keywords glyoxalic acid;fixed bed electrolytic cell;varying current electrolysis;supporting electrolyte;glyoxal; 乙醛酸;固定床电解槽;变电流电解;支持电解质;乙二醛;
Keywords Glyoxal Glyoxal acide Oxidative condition Allantoin Prepare; 乙二醛;乙醛酸;氧化条件;尿囊素;制备;
Description: Manufacturer of glyoxal, glyoxalic acid, and rutin, located in China. 主要生产乙二醛及芦丁。包括公司及产品介绍。
This article deals with the synthesis of 3 methoxy 4 hydromandelic acid by condensation of guaiacol and glyoxalic acid in akaline condition. 本文研究了在碱性条件下,由愈创木酚和乙醛酸合成3-甲氧基-4-羟基扁桃酸的反应。
It is reported that the electrolytic process of oxalic to glyoxalic acid by electroreduction on titanium cathode in this paper. 本文报道在钛阴极上草酸还原制乙醛酸的电解工艺。
Keywords Glyoxal Nitric acid Allantoin; 乙二醛;硝酸;尿囊素;
Abstract： 4-Hydroxy-3-methoxymandelic acid, condensation product of guaiacol and glyoxalic acid、 was subjected electrolytic to oxidation and then decarboxylation, to vanillin. 摘要：愈创木酚和乙醛酸的缩合产物4-羟基-3-甲氧基扁桃酸，经电解氧化、脱羧等步骤可以合成香兰素。
In the course of oxidation, reaction temperature should rise step by step, and in the late stage, reduced pressure distillation should follow so that the concertration of glyoxalic acid can rise and production rate of allantoin can rise up to 40%. 在氧化反应的过程中逐步地提高反应温度，反应后期进行减压浓缩，提高了乙醛酸的浓度，缩短了氧化时间，并使尿囊素产率达到40%25。
A convenient chemical method for determination of electrolyte of oxalic acid was presented.The electrolyte contains four components:oxalic acid,glyoxalic acid,glycolic acid and glyoxal. 草酸阴极还原制乙醇酸的电解液可用简便的化学分析方法测定,其中草酸的定量可以钙盐沉淀后用高锰酸钾法测定;
Keywords glyoxal;glyoxylic acid;oxidation;V2O5/C catalyst; 乙二醛;乙醛酸;氧化;V2O5/C催化剂;
Keywords Glyoxal;Produetion;Application;Market; 乙二醛;生产;应用;市场;
Keywords glyoxal;melamine;wet strength agent; 乙二醛;三聚氰胺;湿强剂;
Keywords one step 5 （p hydroxyphenyl） hydantoin;glyoxalic acid; 一步法;5-（对-羟苯基）-乙内酰脲;水合乙醛酸;