熔点测定

通过对所获晶体的红外光谱分析、熔点测定、纸层析鉴定，证明所获晶体确为维生素C前体2－酮基－L－古龙酸（2－KGA）。

Analysis through infrared spectrum , melting point determination , and paper chromatography , the crystal was identified as 2 - keto - gluconic acid .

这些配合物都经过了元素分析、红外光谱、熔点测定等表征，并测定了配合物1-3、6、9和11的晶体结构及配合物1和2的荧光性质。

All of these complexes were characterized by elemental analysis , IR spectroscopy and melting point determination .

该化合物经IR与熔点测定来确定。

The compound was identified by IR and melting point test .

利用结晶物质在一定温度下熔融的特性，通过对四种化学试剂进行熔点测定。选出试剂A和试剂B作为干热灭菌温度指示剂和参考指示剂。

Reagent A and reagent B were selected as temperature indicators for heat drying sterilization by measuring the melting points of four crystal chemical reagents .

经熔点测定、元素分析、IR分析验证了产品的结构。

The construction of the product has also been verified by the measurement of melt-point , chemical element analysis and IR analysis .

产物用IR，UV-Vis，MS，NMR，熔点测定和元素分析等方法表征。

The UV Vis , IR , NMR , MS , mp determination and elemental analysis were used for characterization .

应用元素分析，熔点测定和FT-IR等方法表征了产物结构。

The melting point , FT-IR and elemental analysis were used to confirm the samples ' structure .

结果合成的3，5-二甲氧基苄溴经熔点测定、红外光谱IR，核磁共振氢谱1H-NMR结构确证，总收率70%。

RESULTS The structure of3,5-dimethoxybenzyl bromide was conformed by melting point , IR , 1HNMR.The overall yield was70 % .

经TLC（薄层色谱）检查、熔点测定和质谱分析可确定该白色针状结晶为苦马豆素。

The white crystal was preliminarily determined as swainsonine by TLC , melting point measurement and mass spectrum .

经熔点测定，HPLC/MS/MS，FTIR，UV及1HNMR等分析确定为二苯硫脲。

The product was identified by melting point , HPLC / MS / MS , FTIR , UV and 1H NMR analyses .

在适当溶剂中将氯硝柳胺与乙醇胺反应，制得氯硝柳胺乙醇胺盐，经元素分析、IR和NMR鉴定了结构。对该化合物的熔点测定进行了讨论。

Ethanolamide salt of niclosamide was prepared by reaction niclosamide with ethanol amide and identified by elemental analysis , IR and1HNMR.Its melting point was discussed .

对中间产物三氯蔗糖-6-乙酸酯，经熔点测定、IR及H-NMR确认了结构。

The structure of the last compound was confirmed by using melting point mensuration , IR and 1H-NMR .

中间体和终产物经熔点测定、紫外光谱（UV）、红外光谱（IR）、核磁共振（1HNMR）和元素分析进行了表征。

The structures of the intermediate product and end product were confirmed by TLC , UV , IR , 1HNMR and elementary analysis .

CaO-SiO2-Ga2O3系的熔点测定

Determination of melting point of cao-sio_2-ga_2o_3 system

通过铺展性试验和DSC熔点测定，结果表明：向基体中添加Cu、Bi和稀土元素均能起到改善钎料合金润湿性的作用；

Spreadability and DSC tests are performed , as the results : Cu , Bi and Ce can improve solder alloy 's wettability by putting into the based alloy ;

应用熔点测定、IR、以及元素分析对所得的结晶Ⅱ进行结构鉴定，结果与虫草素的资料数据一致。

The crystallize II have been characterized by TLC , HPLC , Melting Point Determine , IR , and chemical element analysis , the result is in accordance with the cordycepin spectrum data .

然而，用熔点测定、HPLC/MS/MS，FTIR，UV和1HNMR等手段对此晶体进行分析，确定其为二苯硫脲。

However , identified by melting point , HPLC / MS / MS , FTIR , UV and 1H NMR analyses , the pure crystal should be diphenyl thiourea .

而且，通过熔点测定、元素分析、ESR、FT-IR、ESI-MS、NMR等分析手段验证了产物的结构完全正确。

Furthermore , the structure of the products are validated by testing mp . , element analyzing , ESR , FT-IR , ESI-MS , NMR etc.

结果通过熔点测定1、H-NMR确证了金雀异黄素结构；

RESULTS The structures of genistein were confirmed by melting point and () ~ 1H-NMR spectrum .

用泡沫分离法，纯化了十二烷基硫酸钠（SDS），并通过红外光谱、熔点测定、表面张力-表面活性剂浓度的对数（γ-lgc）曲线的分析，确证了SDS的纯度。

Sodium dodecylsulfate ( SDS ) was purified with foam separation method , its purity was confirmed by IR , melting point measurement and the curve of γ lg c analysis .

采用~1HNMR、IR和熔点测定法对含八甲基环四硅氮烷（Ⅰ）和六甲基环三硅氮烷（Ⅱ）的固体样品和液体样品进行了定性鉴定。

Instrumental Methods , namely ~ 1H NMR , IR and Melting Point Testing , instead of chemical analysis methods are applied for qualitative identification of solid samples containing Si-Octamethylcyclotetrasilazane (ⅰ) or liquid samples containing Si-Hexamethyleyclotrisilazane (ⅱ) .

结果应用Duff反应成功制备了3氟4甲氧基苯甲醛，产物结构经熔点测定及核磁共振谱确证，收率达到87.3%。

Results 3-Fluoro-4-methoxybenzaldehyde was obtained successfully . Its structure was identified by melting point and () ~ 1H-NMR analysis . The yield was up to 87.3 % .

并经熔点测定，1H-NMR、13C-NMR、质谱及元素分析，表征其合成得到的3（2′羧乙基）苯并噻吩的结构。

Meanwhile , the structure of 3 - ( 2 ' - carboxyethyl ) benzo [ b ] thiophene was confirmed by testing melt point , NMR , Mass Spectrometry and elementary analysis .

本文用马来酸酐与3-氯-2-甲基苯胺，采用一步法合成了N-3-氯-2-甲基苯基马来酰亚胺单体（CMPMI），并通过熔点测定进行了表征。

In this article , N-3-chloro-2-methyl-phenylmaleimide ( CMPMI ) was prepared from the reaction of maleic anhydride and 3-chloro-2-methylaniline in one step . The mp .

GB/T11409.1-1995橡胶防老剂、硫化促进剂熔点测定方法

Test method of fusion point for rubber antiagers and vulcanizing accelerators

聚对苯二甲酸丁二酯的多重熔融及其平衡熔点测定

Multiple melting and determination of equilibrium melting point of polybutylene terephthalate

GB/T6843-1986感光材料涂层熔点测定方法

Method for determining the coating melting point of photographic materials

RD-Ⅱ型微机控制熔点测定仪的研制

A development of R - ⅱ microcomputer-based melting point analyzer

通过熔点测定和红外光谱对产品进行了结构表征。

Melting point and IR characterize the product structure .

石油蜡及石油脂滴熔点测定法

Petroleum waxes and petrolatums-determination of drop melting point