The preparation of anisaldehyde by ozonolysis reaction from anethole was studied.

脑为原料,乙酸和环己烷的混合物做溶剂,臭氧化法制备醛。

The synthetic method of trichloromethyl-benzyl-alcohol and trichlorometyl-benzyl-alcohol-acetate were reviewed, and the application of rosone were introduced.

讨论了三氯甲基苄醇和三氯甲基苄醇乙酸酯的合成方法,介绍了结晶玫瑰的应用。

The hexadecanol bischloroacetate was synthesized fastly with the technique of microwave irradiation with the anhydrous cupric sulfate as catalyst.

研究了在硫酸铜的催化下,利用微波辐射技术快速合成氯乙酸十六酯的方法及影响反应收率的因素。

The stability,decomposition and generation of the acetic acid halid and other organic halide in the treated water is briefly discussed.

简述了成的卤化乙酸和其它有机卤化物的稳定性及分解、成等问题.

The synthesis of epalrestat,an aldose reductase inhibitor, was improved. The yield of its intermediate 3-carboxymethyl rhodanine was raised to 76.4%.

对醛搪还原酶抑制剂依帕司他的合成工艺作了改进，使间体绕丹宁乙酸的收率提高到76．4％。

A new method of gas chromatographic analyses in the production of chloroacetic acid for process control using diazomethane as esterification agent is studied.

重氮甲烷为酯化剂，用气相色谱法对氯乙酸产的控分析进行了研究。

The present situation of terpinyl acetate synthesis has been reviewed.One-step and two-steps process for the synthesis of terpinyl acetate and relevant reaction mechanism are discussed.

综述了乙酸松油酯的合成研究现状,讨论了一步法和两步法合成工艺及相应的反应机理。

When the complex of anhydrous zinc acetate with 1,5-naphthalene diamine was formed, the anhydrous zinc acetate changed from a bidentate ligand to a unidentate ligand.

在乙酸锌与1,5-萘二胺形成配位络合物的过程，乙酸锌的结构从双齿型转变成单齿型。

Keto-enol tautomerizing of ethyl acetoacetate was studied by UV.It was conformed that the content of enol ethyl acetoacetate decreased with the increasing polarity of solvents.

本文紫外光谱为手段研究乙酰乙酸乙酯的酮-烯醇式互变异构现象;所得结果证实其烯醇式含量随溶剂极性的增加而减少。

Using sodium hydrosulphide or sodium thiosulfate as materials,the production cost of TGA is low.While,a high content of TGA can be obtained with thiourea as reactant.

本文对巯基乙酸的合成工艺进行了比较研究,认为硫氢化钠法和硫代硫酸钠法产成本低,适宜于选矿用巯基乙酸的产,而硫脲法可得到较高浓度的巯基乙酸。

The content of free acetic acid in cigarette smoke condensates was determined by GC-MS with isopropyl alcohol as the solvent and nonanol as the internal standard.

异丙醇为溶剂,壬醇为内标,采用气相色谱-质谱法分析了卷烟烟气总粒相物的游离乙酸,乙酸测定结果的相对标准偏差小于1%,平均回收率为99。

Results indicate that both of barium thioglycolate and barium-natrium thioglycolate can increase the thermal stability of PVC system, and the thermal stability of barium thioglycolate is better.

巯基乙酸钡和巯基乙酸钡-钠都能提高PVC的热稳定性,但巯基乙酸钡的稳定性要好于巯基乙酸钡-钠。

Methyl thioacetate was prepared by using acetyl chloride and methyl mercaptan as starting raw material in this paper.The yield of product is 69.3%.Itcan be used in seasoning flavor.

对可用于各种调味精的食用料硫代乙酸甲酯的合成进行了初步研究，产率达到693％，对所合成的产品做了红外光谱分析和质子核磁共振分析，确定了其化学结构。

The preparation of anisaldehyde by ozonolysis reaction from anethole was studied.

以茴香脑为原料,乙酸烷的混合物做溶剂,臭氧化法制备茴香醛。

The synthetic method of trichloromethyl-benzyl-alcohol and trichlorometyl-benzyl-alcohol-acetate were reviewed, and the application of rosone were introduced.

讨论了三氯甲基苄醇三氯甲基苄醇乙酸酯的合方法,介绍了结晶玫瑰的应用。

The hexadecanol bischloroacetate was synthesized fastly with the technique of microwave irradiation with the anhydrous cupric sulfate as catalyst.

研究了在无水硫酸铜的催化下,利用微波辐射技术快速合氯乙酸十六酯的方法及影响反应收率的因素。

The stability,decomposition and generation of the acetic acid halid and other organic halide in the treated water is briefly discussed.

简述了的卤化乙酸其它有机卤化物的稳定性及分解、等问题.

The synthesis of epalrestat,an aldose reductase inhibitor, was improved. The yield of its intermediate 3-carboxymethyl rhodanine was raised to 76.4%.

对醛搪还原酶抑制剂依帕司他的合工艺作了改进，使中间体绕丹宁乙酸的收率提高到76．4％。

A new method of gas chromatographic analyses in the production of chloroacetic acid for process control using diazomethane as esterification agent is studied.

以重氮甲烷为酯化剂，用气相色谱法对氯乙酸产的中控分析进行了研究。

The present situation of terpinyl acetate synthesis has been reviewed.One-step and two-steps process for the synthesis of terpinyl acetate and relevant reaction mechanism are discussed.

综述了乙酸松油酯的合研究现状,讨论了一步法两步法合工艺及相应的反应机理。

When the complex of anhydrous zinc acetate with 1,5-naphthalene diamine was formed, the anhydrous zinc acetate changed from a bidentate ligand to a unidentate ligand.

在无水乙酸锌与1,5-萘二胺形络合物的过程中，无水乙酸锌的结构从双齿型转变单齿型。

Keto-enol tautomerizing of ethyl acetoacetate was studied by UV.It was conformed that the content of enol ethyl acetoacetate decreased with the increasing polarity of solvents.

本文以紫外光谱为手段研究乙酰乙酸乙酯的酮-烯醇式互变异构现象;所得结果证实其烯醇式含量随溶剂极性的增加而减少。

Using sodium hydrosulphide or sodium thiosulfate as materials,the production cost of TGA is low.While,a high content of TGA can be obtained with thiourea as reactant.

本文对巯基乙酸的合工艺进行了比较研究,认为硫氢化钠法硫代硫酸钠法产本低,适宜于选矿用巯基乙酸的产,而硫脲法可得到较高浓度的巯基乙酸。

The content of free acetic acid in cigarette smoke condensates was determined by GC-MS with isopropyl alcohol as the solvent and nonanol as the internal standard.

以异丙醇为溶剂,壬醇为内标,采用气相色谱-质谱法分析了卷烟烟气总粒相物中的游离乙酸,乙酸测定结果的相对标准偏差小于1%,平均回收率为99。

Results indicate that both of barium thioglycolate and barium-natrium thioglycolate can increase the thermal stability of PVC system, and the thermal stability of barium thioglycolate is better.

巯基乙酸钡巯基乙酸钡-钠都能提高PVC的热稳定性,但巯基乙酸钡的稳定性要好于巯基乙酸钡-钠。

Methyl thioacetate was prepared by using acetyl chloride and methyl mercaptan as starting raw material in this paper.The yield of product is 69.3%.Itcan be used in seasoning flavor.

对可用于各种调味香精的食用香料硫代乙酸甲酯的合进行了初步研究，产率达到693％，对所合的产品做了红外光谱分析质子核磁共振分析，确定了其化学结构。

The preparation of anisaldehyde by ozonolysis reaction from anethole was studied.

以茴香脑为原料,乙酸环己烷的混合物做溶剂,臭氧化法制备茴香醛。

The synthetic method of trichloromethyl-benzyl-alcohol and trichlorometyl-benzyl-alcohol-acetate were reviewed, and the application of rosone were introduced.

讨论了氯甲基苄氯甲基苄乙酸酯的合成方法,介绍了结晶玫瑰的应用。

The hexadecanol bischloroacetate was synthesized fastly with the technique of microwave irradiation with the anhydrous cupric sulfate as catalyst.

研究了在无水硫酸铜的催化下,利用微波辐射技术快速合成氯乙酸十六酯的方法及影响反应收率的因素。

The stability,decomposition and generation of the acetic acid halid and other organic halide in the treated water is briefly discussed.

简述了成的卤化乙酸其它有机卤化物的稳定性及分解、成等问题.

The synthesis of epalrestat,an aldose reductase inhibitor, was improved. The yield of its intermediate 3-carboxymethyl rhodanine was raised to 76.4%.

对醛搪还原酶抑制剂依帕司他的合成工艺作了改进，使中间体绕丹宁乙酸的收率提高到76．4％。

A new method of gas chromatographic analyses in the production of chloroacetic acid for process control using diazomethane as esterification agent is studied.

以重氮甲烷为酯化剂，用气相色谱法对氯乙酸产的中控分析进行了研究。

The present situation of terpinyl acetate synthesis has been reviewed.One-step and two-steps process for the synthesis of terpinyl acetate and relevant reaction mechanism are discussed.

综述了乙酸松油酯的合成研究现状,讨论了一步法步法合成工艺及相应的反应机理。

When the complex of anhydrous zinc acetate with 1,5-naphthalene diamine was formed, the anhydrous zinc acetate changed from a bidentate ligand to a unidentate ligand.

在无水乙酸锌与1,5-萘二胺形成配位络合物的过程中，无水乙酸锌的结构从双齿型转变成单齿型。

Keto-enol tautomerizing of ethyl acetoacetate was studied by UV.It was conformed that the content of enol ethyl acetoacetate decreased with the increasing polarity of solvents.

本文以紫外光谱为手段研究乙酰乙酸乙酯的酮-烯式互变异构现象;所得结果证实其烯式含量随溶剂极性的增加而减少。

Using sodium hydrosulphide or sodium thiosulfate as materials,the production cost of TGA is low.While,a high content of TGA can be obtained with thiourea as reactant.

本文对巯基乙酸的合成工艺进行了比较研究,认为硫氢化钠法硫代硫酸钠法产成本低,适宜于选矿用巯基乙酸的产,而硫脲法可得到较高浓度的巯基乙酸。

The content of free acetic acid in cigarette smoke condensates was determined by GC-MS with isopropyl alcohol as the solvent and nonanol as the internal standard.

以异丙为溶剂,壬为内标,采用气相色谱-质谱法分析了卷烟烟气总粒相物中的游离乙酸,乙酸测定结果的相对标准偏差小于1%,平均回收率为99。

Results indicate that both of barium thioglycolate and barium-natrium thioglycolate can increase the thermal stability of PVC system, and the thermal stability of barium thioglycolate is better.

巯基乙酸钡巯基乙酸钡-钠都能提高PVC的热稳定性,但巯基乙酸钡的稳定性要好于巯基乙酸钡-钠。

Methyl thioacetate was prepared by using acetyl chloride and methyl mercaptan as starting raw material in this paper.The yield of product is 69.3%.Itcan be used in seasoning flavor.

对可用于各种调味香精的食用香料硫代乙酸甲酯的合成进行了初步研究，产率达到693％，对所合成的产品做了红外光谱分析质子核磁共振分析，确定了其化学结构。

The preparation of anisaldehyde by ozonolysis reaction from anethole was studied.

以茴香脑为原料,酸和环己烷的混合物做溶剂,臭氧化法制备茴香醛。

The synthetic method of trichloromethyl-benzyl-alcohol and trichlorometyl-benzyl-alcohol-acetate were reviewed, and the application of rosone were introduced.

讨论三氯甲基苄醇和三氯甲基苄醇酸酯的合成方法,介绍瑰的应用。

The hexadecanol bischloroacetate was synthesized fastly with the technique of microwave irradiation with the anhydrous cupric sulfate as catalyst.

研究在无水硫酸铜的催化下,利用微波辐射技术快速合成氯酸十六酯的方法及影响反应收率的因素。

The stability,decomposition and generation of the acetic acid halid and other organic halide in the treated water is briefly discussed.

简成的卤化酸和其它有机卤化物的稳定性及分解、成等问题.

The synthesis of epalrestat,an aldose reductase inhibitor, was improved. The yield of its intermediate 3-carboxymethyl rhodanine was raised to 76.4%.

对醛搪还原酶抑制剂依帕司他的合成工艺作改进，使中间体绕丹宁酸的收率提高到76．4％。

A new method of gas chromatographic analyses in the production of chloroacetic acid for process control using diazomethane as esterification agent is studied.

以重氮甲烷为酯化剂，用气相色谱法对氯酸产的中控分析进行研究。

The present situation of terpinyl acetate synthesis has been reviewed.One-step and two-steps process for the synthesis of terpinyl acetate and relevant reaction mechanism are discussed.

综酸松油酯的合成研究现状,讨论一步法和两步法合成工艺及相应的反应机理。

When the complex of anhydrous zinc acetate with 1,5-naphthalene diamine was formed, the anhydrous zinc acetate changed from a bidentate ligand to a unidentate ligand.

在无水酸锌与1,5-萘二胺形成配位络合物的过程中，无水酸锌的构从双齿型转变成单齿型。

Keto-enol tautomerizing of ethyl acetoacetate was studied by UV.It was conformed that the content of enol ethyl acetoacetate decreased with the increasing polarity of solvents.

本文以紫外光谱为手段研究酰酸酯的酮-烯醇式互变异构现象;所得果证实其烯醇式含量随溶剂极性的增加而减少。

Using sodium hydrosulphide or sodium thiosulfate as materials,the production cost of TGA is low.While,a high content of TGA can be obtained with thiourea as reactant.

本文对巯基酸的合成工艺进行比较研究,认为硫氢化钠法和硫代硫酸钠法产成本低,适宜于选矿用巯基酸的产,而硫脲法可得到较高浓度的巯基酸。

The content of free acetic acid in cigarette smoke condensates was determined by GC-MS with isopropyl alcohol as the solvent and nonanol as the internal standard.

以异丙醇为溶剂,壬醇为内标,采用气相色谱-质谱法分析卷烟烟气总粒相物中的游离酸,酸测定果的相对标准偏差小于1%,平均回收率为99。

Results indicate that both of barium thioglycolate and barium-natrium thioglycolate can increase the thermal stability of PVC system, and the thermal stability of barium thioglycolate is better.

巯基酸钡和巯基酸钡-钠都能提高PVC的热稳定性,但巯基酸钡的稳定性要好于巯基酸钡-钠。

Methyl thioacetate was prepared by using acetyl chloride and methyl mercaptan as starting raw material in this paper.The yield of product is 69.3%.Itcan be used in seasoning flavor.

对可用于各种调味香精的食用香料硫代酸甲酯的合成进行初步研究，产率达到693％，对所合成的产品做红外光谱分析和质子核磁共振分析，确定其化学构。

The preparation of anisaldehyde by ozonolysis reaction from anethole was studied.

以茴香脑为原料,乙酸和环混合物做溶剂,臭氧化法制备茴香醛。

The synthetic method of trichloromethyl-benzyl-alcohol and trichlorometyl-benzyl-alcohol-acetate were reviewed, and the application of rosone were introduced.

讨论了三氯甲基苄醇和三氯甲基苄醇乙酸酯合方法,介绍了结晶玫瑰应用。

The hexadecanol bischloroacetate was synthesized fastly with the technique of microwave irradiation with the anhydrous cupric sulfate as catalyst.

研究了在无水硫酸铜催化下,利用微波辐射技术快速合氯乙酸十六酯方法及影响反应收率因素。

The stability,decomposition and generation of the acetic acid halid and other organic halide in the treated water is briefly discussed.

简述了卤化乙酸和其它有机卤化物稳定性及分解、等问题.

The synthesis of epalrestat,an aldose reductase inhibitor, was improved. The yield of its intermediate 3-carboxymethyl rhodanine was raised to 76.4%.

对醛搪还原酶抑制剂依帕司他合工艺作了改进，使中间体绕丹宁乙酸收率提高到76．4％。

A new method of gas chromatographic analyses in the production of chloroacetic acid for process control using diazomethane as esterification agent is studied.

以重氮甲为酯化剂，用气相色谱法对氯乙酸产中控分析进行了研究。

The present situation of terpinyl acetate synthesis has been reviewed.One-step and two-steps process for the synthesis of terpinyl acetate and relevant reaction mechanism are discussed.

综述了乙酸松油酯合研究现状,讨论了一步法和两步法合工艺及相应反应机理。

When the complex of anhydrous zinc acetate with 1,5-naphthalene diamine was formed, the anhydrous zinc acetate changed from a bidentate ligand to a unidentate ligand.

在无水乙酸锌与1,5-萘二配位络合物过程中，无水乙酸锌结构从双齿型转变单齿型。

Keto-enol tautomerizing of ethyl acetoacetate was studied by UV.It was conformed that the content of enol ethyl acetoacetate decreased with the increasing polarity of solvents.

本文以紫外光谱为手段研究乙酰乙酸乙酯酮-烯醇式互变异构现象;所得结果证实其烯醇式含量随溶剂极性增加而减少。

Using sodium hydrosulphide or sodium thiosulfate as materials,the production cost of TGA is low.While,a high content of TGA can be obtained with thiourea as reactant.

本文对巯基乙酸合工艺进行了比较研究,认为硫氢化钠法和硫代硫酸钠法产本低,适宜于选矿用巯基乙酸产,而硫脲法可得到较高浓度巯基乙酸。

The content of free acetic acid in cigarette smoke condensates was determined by GC-MS with isopropyl alcohol as the solvent and nonanol as the internal standard.

以异丙醇为溶剂,壬醇为内标,采用气相色谱-质谱法分析了卷烟烟气总粒相物中游离乙酸,乙酸测定结果相对标准偏差小于1%,平均回收率为99。

Results indicate that both of barium thioglycolate and barium-natrium thioglycolate can increase the thermal stability of PVC system, and the thermal stability of barium thioglycolate is better.

巯基乙酸钡和巯基乙酸钡-钠都能提高PVC热稳定性,但巯基乙酸钡稳定性要好于巯基乙酸钡-钠。

Methyl thioacetate was prepared by using acetyl chloride and methyl mercaptan as starting raw material in this paper.The yield of product is 69.3%.Itcan be used in seasoning flavor.

对可用于各种调味香精食用香料硫代乙酸甲酯合进行了初步研究，产率达到693％，对所合产品做了红外光谱分析和质子核磁共振分析，确定了其化学结构。

The preparation of anisaldehyde by ozonolysis reaction from anethole was studied.

以茴香脑为原料,乙酸和环己烷混合物做溶剂,臭氧化法制备茴香。

The synthetic method of trichloromethyl-benzyl-alcohol and trichlorometyl-benzyl-alcohol-acetate were reviewed, and the application of rosone were introduced.

讨论了三氯甲基苄醇和三氯甲基苄醇乙酸酯合成方法,介绍了结晶玫瑰应用。

The hexadecanol bischloroacetate was synthesized fastly with the technique of microwave irradiation with the anhydrous cupric sulfate as catalyst.

研究了在无水硫酸铜催化下,利用微波辐射技术快速合成氯乙酸十六酯方法及影响反应收率因素。

The stability,decomposition and generation of the acetic acid halid and other organic halide in the treated water is briefly discussed.

简述了成卤化乙酸和其它有机卤化物性及分解、成等问题.

The synthesis of epalrestat,an aldose reductase inhibitor, was improved. The yield of its intermediate 3-carboxymethyl rhodanine was raised to 76.4%.

还原酶抑制剂依帕司他合成工艺作了改进，使中间体绕丹宁乙酸收率提高到76．4％。

A new method of gas chromatographic analyses in the production of chloroacetic acid for process control using diazomethane as esterification agent is studied.

以重氮甲烷为酯化剂，用气相色谱法氯乙酸产中控分析进行了研究。

The present situation of terpinyl acetate synthesis has been reviewed.One-step and two-steps process for the synthesis of terpinyl acetate and relevant reaction mechanism are discussed.

综述了乙酸松油酯合成研究现状,讨论了一步法和两步法合成工艺及相应反应机理。

When the complex of anhydrous zinc acetate with 1,5-naphthalene diamine was formed, the anhydrous zinc acetate changed from a bidentate ligand to a unidentate ligand.

在无水乙酸锌与1,5-萘二胺形成配位络合物过程中，无水乙酸锌结构从双齿型转变成单齿型。

Keto-enol tautomerizing of ethyl acetoacetate was studied by UV.It was conformed that the content of enol ethyl acetoacetate decreased with the increasing polarity of solvents.

本文以紫外光谱为手段研究乙酰乙酸乙酯酮-烯醇式互变异构现象;所得结果证实其烯醇式含量随溶剂极性增加而减少。

Using sodium hydrosulphide or sodium thiosulfate as materials,the production cost of TGA is low.While,a high content of TGA can be obtained with thiourea as reactant.

本文巯基乙酸合成工艺进行了比较研究,认为硫氢化钠法和硫代硫酸钠法产成本低,适宜于选矿用巯基乙酸产,而硫脲法可得到较高浓度巯基乙酸。

The content of free acetic acid in cigarette smoke condensates was determined by GC-MS with isopropyl alcohol as the solvent and nonanol as the internal standard.

以异丙醇为溶剂,壬醇为内标,采用气相色谱-质谱法分析了卷烟烟气总粒相物中游离乙酸,乙酸测结果相标准偏差小于1%,平均回收率为99。

Results indicate that both of barium thioglycolate and barium-natrium thioglycolate can increase the thermal stability of PVC system, and the thermal stability of barium thioglycolate is better.

巯基乙酸钡和巯基乙酸钡-钠都能提高PVC热性,但巯基乙酸钡性要好于巯基乙酸钡-钠。

Methyl thioacetate was prepared by using acetyl chloride and methyl mercaptan as starting raw material in this paper.The yield of product is 69.3%.Itcan be used in seasoning flavor.

可用于各种调味香精食用香料硫代乙酸甲酯合成进行了初步研究，产率达到693％，所合成产品做了红外光谱分析和质子核磁共振分析，确了其化学结构。

The preparation of anisaldehyde by ozonolysis reaction from anethole was studied.

以茴香脑为原料,乙和环己烷混合物做溶剂,臭氧化法制备茴香醛。

The synthetic method of trichloromethyl-benzyl-alcohol and trichlorometyl-benzyl-alcohol-acetate were reviewed, and the application of rosone were introduced.

讨论了三氯甲基苄醇和三氯甲基苄醇乙酯合成方法,介绍了结晶玫瑰应用。

The hexadecanol bischloroacetate was synthesized fastly with the technique of microwave irradiation with the anhydrous cupric sulfate as catalyst.

研究了在无水硫铜催化下,利用微波辐射技术快速合成氯乙十六酯方法及影响反应收率因素。

The stability,decomposition and generation of the acetic acid halid and other organic halide in the treated water is briefly discussed.

简述了成卤化乙和其它有机卤化物稳定性及分解、成等问题.

The synthesis of epalrestat,an aldose reductase inhibitor, was improved. The yield of its intermediate 3-carboxymethyl rhodanine was raised to 76.4%.

对醛搪还原酶抑制剂依帕司他合成工艺作了改进，使中间体绕丹宁乙收率提高到76．4％。

A new method of gas chromatographic analyses in the production of chloroacetic acid for process control using diazomethane as esterification agent is studied.

以重氮甲烷为酯化剂，用气相色谱法对氯乙产中控分析进行了研究。

The present situation of terpinyl acetate synthesis has been reviewed.One-step and two-steps process for the synthesis of terpinyl acetate and relevant reaction mechanism are discussed.

综述了乙松油酯合成研究现状,讨论了一步法和两步法合成工艺及相应反应机理。

When the complex of anhydrous zinc acetate with 1,5-naphthalene diamine was formed, the anhydrous zinc acetate changed from a bidentate ligand to a unidentate ligand.

在无水乙与1,5-萘二胺形成配位络合物过程中，无水乙结构从双齿型转变成单齿型。

Keto-enol tautomerizing of ethyl acetoacetate was studied by UV.It was conformed that the content of enol ethyl acetoacetate decreased with the increasing polarity of solvents.

本文以紫外光谱为手段研究乙酰乙乙酯酮-烯醇式互变异构现象;所得结果证实其烯醇式含量随溶剂极性增加而减少。

Using sodium hydrosulphide or sodium thiosulfate as materials,the production cost of TGA is low.While,a high content of TGA can be obtained with thiourea as reactant.

本文对巯基乙合成工艺进行了比较研究,认为硫氢化钠法和硫代硫钠法产成本低,适宜于选矿用巯基乙产,而硫脲法可得到较高浓度巯基乙。

The content of free acetic acid in cigarette smoke condensates was determined by GC-MS with isopropyl alcohol as the solvent and nonanol as the internal standard.

以异丙醇为溶剂,壬醇为内标,采用气相色谱-质谱法分析了卷烟烟气总粒相物中游离乙,乙测定结果相对标准偏差小于1%,平均回收率为99。

Results indicate that both of barium thioglycolate and barium-natrium thioglycolate can increase the thermal stability of PVC system, and the thermal stability of barium thioglycolate is better.

巯基乙钡和巯基乙钡-钠都能提高PVC热稳定性,但巯基乙钡稳定性要好于巯基乙钡-钠。

Methyl thioacetate was prepared by using acetyl chloride and methyl mercaptan as starting raw material in this paper.The yield of product is 69.3%.Itcan be used in seasoning flavor.

对可用于各种调味香精食用香料硫代乙甲酯合成进行了初步研究，产率达到693％，对所合成产品做了红外光谱分析和质子核磁共振分析，确定了其化学结构。

The preparation of anisaldehyde by ozonolysis reaction from anethole was studied.

以茴香脑为原料,乙酸和环己烷的混合物做溶剂,臭氧化法制备茴香醛。

The synthetic method of trichloromethyl-benzyl-alcohol and trichlorometyl-benzyl-alcohol-acetate were reviewed, and the application of rosone were introduced.

讨论了三氯甲基苄醇和三氯甲基苄醇乙酸酯的合成方法,介绍了结晶玫瑰的应用。

The hexadecanol bischloroacetate was synthesized fastly with the technique of microwave irradiation with the anhydrous cupric sulfate as catalyst.

研究了在无水硫酸铜的催化下,利用微波辐射技术快速合成氯乙酸十六酯的方法及影响反应收率的因素。

The stability,decomposition and generation of the acetic acid halid and other organic halide in the treated water is briefly discussed.

简述了成的卤化乙酸和其它有机卤化物的稳定性及分解、成等问题.

The synthesis of epalrestat,an aldose reductase inhibitor, was improved. The yield of its intermediate 3-carboxymethyl rhodanine was raised to 76.4%.

对醛搪还原酶抑制剂依帕司他的合成工艺作了改进，使中间体绕丹宁乙酸的收率提高到76．4％。

A new method of gas chromatographic analyses in the production of chloroacetic acid for process control using diazomethane as esterification agent is studied.

以重氮甲烷为酯化剂，用气相色谱法对氯乙酸产的中控分析进行了研究。

The present situation of terpinyl acetate synthesis has been reviewed.One-step and two-steps process for the synthesis of terpinyl acetate and relevant reaction mechanism are discussed.

综述了乙酸松油酯的合成研究现状,讨论了一步法和两步法合成工艺及相应的反应机理。

When the complex of anhydrous zinc acetate with 1,5-naphthalene diamine was formed, the anhydrous zinc acetate changed from a bidentate ligand to a unidentate ligand.

在无水乙酸锌与1,5-萘二胺形成配位络合物的过程中，无水乙酸锌的结构从双变成单。

Keto-enol tautomerizing of ethyl acetoacetate was studied by UV.It was conformed that the content of enol ethyl acetoacetate decreased with the increasing polarity of solvents.

本文以紫外光谱为手段研究乙酰乙酸乙酯的酮-烯醇式互变异构现象;所得结果证实其烯醇式含量随溶剂极性的增加而减少。

Using sodium hydrosulphide or sodium thiosulfate as materials,the production cost of TGA is low.While,a high content of TGA can be obtained with thiourea as reactant.

本文对巯基乙酸的合成工艺进行了比较研究,认为硫氢化钠法和硫代硫酸钠法产成本低,适宜于选矿用巯基乙酸的产,而硫脲法可得到较高浓度的巯基乙酸。

The content of free acetic acid in cigarette smoke condensates was determined by GC-MS with isopropyl alcohol as the solvent and nonanol as the internal standard.

以异丙醇为溶剂,壬醇为内标,采用气相色谱-质谱法分析了卷烟烟气总粒相物中的游离乙酸,乙酸测定结果的相对标准偏差小于1%,平均回收率为99。

Results indicate that both of barium thioglycolate and barium-natrium thioglycolate can increase the thermal stability of PVC system, and the thermal stability of barium thioglycolate is better.

巯基乙酸钡和巯基乙酸钡-钠都能提高PVC的热稳定性,但巯基乙酸钡的稳定性要好于巯基乙酸钡-钠。

Methyl thioacetate was prepared by using acetyl chloride and methyl mercaptan as starting raw material in this paper.The yield of product is 69.3%.Itcan be used in seasoning flavor.

对可用于各种调味香精的食用香料硫代乙酸甲酯的合成进行了初步研究，产率达到693％，对所合成的产品做了红外光谱分析和质子核磁共振分析，确定了其化学结构。

The preparation of anisaldehyde by ozonolysis reaction from anethole was studied.

以茴香脑为料,乙酸和环己烷的混合物做溶剂,臭氧法制备茴香醛。

The synthetic method of trichloromethyl-benzyl-alcohol and trichlorometyl-benzyl-alcohol-acetate were reviewed, and the application of rosone were introduced.

讨论了三氯甲基苄醇和三氯甲基苄醇乙酸酯的合成方法,介绍了结晶玫瑰的应用。

The hexadecanol bischloroacetate was synthesized fastly with the technique of microwave irradiation with the anhydrous cupric sulfate as catalyst.

研究了在无水硫酸铜的催下,利用微波辐射技术快速合成氯乙酸十六酯的方法及影响反应收率的因素。

The stability,decomposition and generation of the acetic acid halid and other organic halide in the treated water is briefly discussed.

简述了成的乙酸和其它有物的稳定性及分解、成等问题.

The synthesis of epalrestat,an aldose reductase inhibitor, was improved. The yield of its intermediate 3-carboxymethyl rhodanine was raised to 76.4%.

对醛搪还制剂依帕司他的合成工艺作了改进，使中间体绕丹宁乙酸的收率提高到76．4％。

A new method of gas chromatographic analyses in the production of chloroacetic acid for process control using diazomethane as esterification agent is studied.

以重氮甲烷为酯剂，用气相色谱法对氯乙酸产的中控分析进行了研究。

The present situation of terpinyl acetate synthesis has been reviewed.One-step and two-steps process for the synthesis of terpinyl acetate and relevant reaction mechanism are discussed.

综述了乙酸松油酯的合成研究现状,讨论了一步法和两步法合成工艺及相应的反应理。

When the complex of anhydrous zinc acetate with 1,5-naphthalene diamine was formed, the anhydrous zinc acetate changed from a bidentate ligand to a unidentate ligand.

在无水乙酸锌与1,5-萘二胺形成配位络合物的过程中，无水乙酸锌的结构从双齿型转变成单齿型。

Keto-enol tautomerizing of ethyl acetoacetate was studied by UV.It was conformed that the content of enol ethyl acetoacetate decreased with the increasing polarity of solvents.

本文以紫外光谱为手段研究乙酰乙酸乙酯的酮-烯醇式互变异构现象;所得结果证实其烯醇式含量随溶剂极性的增加而减少。

Using sodium hydrosulphide or sodium thiosulfate as materials,the production cost of TGA is low.While,a high content of TGA can be obtained with thiourea as reactant.

本文对巯基乙酸的合成工艺进行了比较研究,认为硫氢钠法和硫代硫酸钠法产成本低,适宜于选矿用巯基乙酸的产,而硫脲法可得到较高浓度的巯基乙酸。

The content of free acetic acid in cigarette smoke condensates was determined by GC-MS with isopropyl alcohol as the solvent and nonanol as the internal standard.

以异丙醇为溶剂,壬醇为内标,采用气相色谱-质谱法分析了卷烟烟气总粒相物中的游离乙酸,乙酸测定结果的相对标准偏差小于1%,平均回收率为99。

Results indicate that both of barium thioglycolate and barium-natrium thioglycolate can increase the thermal stability of PVC system, and the thermal stability of barium thioglycolate is better.

巯基乙酸钡和巯基乙酸钡-钠都能提高PVC的热稳定性,但巯基乙酸钡的稳定性要好于巯基乙酸钡-钠。

Methyl thioacetate was prepared by using acetyl chloride and methyl mercaptan as starting raw material in this paper.The yield of product is 69.3%.Itcan be used in seasoning flavor.

对可用于各种调味香精的食用香料硫代乙酸甲酯的合成进行了初步研究，产率达到693％，对所合成的产品做了红外光谱分析和质子核磁共振分析，确定了其学结构。