甲酸

Seamless sheath of ether-based urethane resistant to cathodic, hydraulic and other environmental conditions.

无缝铠装乙醚氨酸乙酯。耐阴极、液压和其它环境条件。

This investigation provided an environment-friendly process for the synthesis of methyl anthranilate.

摘要提供了一种环境友好的合成工艺制备香料邻氨酸酯。

The toxicity effect of 6 carbamic ester pesticides on Anabaena flos-aquae was studied.

水华鱼腥藻为材料研究了6种氨酸酯类农药对藻类的毒性效应。

The reaction principal, reaction procedure and flowsheeting in the potassium sulfate method are included.

给出了酸钠法的反应原理、反应过程及工艺流程。对原料消耗、产品规格及质量测定作了简单介绍。

Water (Aqua), Glycerin, Propylene Glycol, Hydroxyethylcellulose, Tetrasodium EDTA, Citric Acid, Sodium Benzoate.

水（水） ，甘油，丙醇，羟乙纤维素， Tetrasodium乙胺四乙酸，柠檬酸，酸钠。

The effect that isopropyl xanthogen ethyl formate is synthesized with isopropyl xanthate under differ condition has been studied.

考察了不同条件对异丙黄药合成异丙黄原酸酸乙酯的影响。

By using phase transfer catalyst, the yield of the preparation of cyclopropane carboxylic isopropyl ester was increased.

在环丙酸异丙酯的合成反应中,通过相转移催化剂提高了反应收率。

Method The target compound was synthesized from clarithromycin via hydrolyzation,acetylation,cyclic carbonatation,oxidation,decarbonatation,acylation,cyclic carbamatation and cyclization.

方法霉素为起始原料,经水解、乙酰化、环碳酸酯化、氧化、脱碳酸酯化、酰化、环氨酸酯化和环合等反应合成目标化合物。

The results revealed that there was the toxicity effect of 6 different carbamic ester pesticides on Anabaena flos-aquae.

结果发现,6种氨酸酯类农药对水华鱼腥藻都有不同程度的毒性作用。

Mazindol was synthesized by four steps from chlorobenzene and phthalic anhydride in an overall yield of 23.4%.

氯和邻酸酐为起始原料，经四步工序合成马吲哚，总收率为23．4％。

It is ascertained that the PABA may be N-dimethylated using dimethyl sulfate as a methylation agent.

确定硫酸酯为N——化剂,对对氨酸PABA进行N——化.

A simultaneously potentiometric titration method for determining benzaldehyde and benzoic acid in electrosynthesis products was reported.

采用电位滴定法测定电合成产物中的醛和酸,研究了盐酸羟胺用量、醇和含量对测定的影响。

Thioxanthone photoinitiator was synthesized from DTSA by chlorination and condensation with isopropylbenzene in the presence of anhydrous AlCl3.

硫代酸(DTSA)经过酰氯化、氯代、然后与异丙在三氧化铝催化下缩合成为光引发剂。

Amino phthalhydrazide was synthesized from phthalic anhydride by four steps of nitrationidehydration, hydrazinolysis and reduction reactions in this paper.

邻酸酐为原料,经硝化、脱水、肼化、还原等步骤合成了3-氨邻酰肼。

(-)-Methyl mandelate was produced by asymmetric reduction of methyl benzoylformate catalyzed by Saccharomyces cerevisiae LH1 screcned by our laboratory.

采用本实验室筛选到的酿酒酵母LH1催化酰酸酯不对称合成(R)-(-)-扁桃酸酯。

The effects of polyisobutene, LaF3, MCA, dialkyldithioaminoformaite on properties of lithium-calcium base grease have been discussed in this paper.

考察了聚异丁烯、氟化镧、三聚氰胺氰尿酸复合物(MCA)、硫代氨酸盐对锂-钙脂性能的影响。

A planar tetradentate dinuclear ligand, 3, 5-bis(2-pyridyl) pyrazole, was synthesized by a three-step reaction of esterification, condensation and addition.

2-吡啶酸为原料，经酯化、缩合、加成合成了平面四齿双核配体3，5-（2-吡啶）吡唑。

The preparation of hydroxyacetone was studied by esterification of chloroacetone with sodium formate and alcholysis of acetonyl formate with methanol.

一氯丙酮、酸钠和醇为原料经酯化与醇解两步反应合成羟丙酮,研究了反应条件对相转移催化酯化及醇解反应蒸馏过程的影响。

Two kinds of bis-hydroxyalkyl or bis-methyl formylate subtituted bis-ethylenedithio-tetrathiafulvalenes (BEDT-TTF) and their charger-transfer complexes (CT-complexes ) with TCNQ were synthesized.

合成了带双羟烷及双酸酯取代的两种双硫代亚乙四硫代富瓦烯(BEDT-TTF)的衍生物及其它们与TCNQ的CT-络合物。

Xanthone was efficiently synthesized from o-chlorobenzoic acid first by etherization and then by Friedel-Crafts reaction in the presence of aluminium trichloride.

邻氯酸为原料,先进行醚化,再在三氯化铝的作用下进行傅-反应,可简洁、高效的合成呫吨酮。