oxalate

urea oxalate dihydrate

二水合草酸脲

A new method for the synthesis of 1 methyl 3 propylpyrazole 5 carboxlic acid from 2 pentanone and diethyl oxalate is reported.

以2-戊酮和草酸二乙酯为起始原料,经缩合、与甲肼环合、水解等三个步骤合成了1-甲-3-丙吡唑-5-羧酸。

The zirconium nitrate is more suitable to be used as the precursor than zirconium oxychloride to get stable zirconyl oxalate sol with uniform particles.

实验结果表明，硝酸锆比氧氯化锆更适合作前驱体，可获得均匀分布的稳定溶胶；

Oxalic acid is one of nature's most highly oxidized organic compounds, and the accumulation of oxalate in the body can cause various pathological disorders, including urolithiasis, hyperoxaluria, etc.

草酸是一高毒性化合物，它在体内的蓄积可引起各状态，包括肾结石、高草酸尿症等。

ResultsAtractylodes macrocephala Koidz.transection structure fiber synanthrin,crystalline calcium oxalate,cork cell and stone cell can be regarded as identification character.

结果白术根茎横切面结构、纤维、菊糖、草酸钙针晶、木栓细胞、石细胞均可作为其鉴别特征。

Monodispersed antimony-doped tin oxide(ATO) conductive nanoparticles were synthesized by directly hydrothermal method at 260 ℃ from the starting materials tin oxalate and tartrated antimony.

以草酸亚锡和酒石酸锑钾为原料,在260℃用高温水热法一步合成具有纳米结构单分散性的锑掺杂氧化锡纳米导电粉体。

The products in the preparation of diethyl carbonate (DEC) from diethyl oxalate (DEO) by decarbonylation over K2CO3/AC (activated carbon) were analyzed by gas chromatography-mass (GC-MS).

摘要采用气相色谱-质谱联用（程序升温）的方法对K2CO3/性炭上催化草酸二乙酯(DEO)气相脱羰制碳酸二乙酯(DEC)的反应产物进行了分析。