邻硝基苯甲酸

关于邻硝基苯甲酸根离子在这些盐溶液中的平均活度系数，作者仿照前人作某些假设，从而计算出该酸的未离解分子在盐溶液中的活度系数fu。

Following Randall and Failey , some assumptions about the activity coefficients of the ions of o-nitrobenzoic acid in salt solutions were made and thereby it was possible to calculate the activity coefficients of its undissociated molecules in these solutions .

标题化合物（SYP-298）是沈阳化工研究院的试验除草剂，由邻硝基苯甲酸经5步反应制得。

The title compound ( SYP-298 ) was an experimental herbicide of Shenyang Research Institute of Chemical Industry . It was prepared by the reaction of 2-nitrobenzoic acid with 6-amino-7-fluoro-4 - ( prop-2-ynyl ) - 2H - benzo [ b ] [ 1,4 ] oxazin-3 ( 4H ) - one .

对甲苯磺酸催化合成邻硝基苯甲酸正丁酯

Catalytic synthesis of butyl o nitrobenzoate with p toluene sulphonic acid

采用溶剂萃取法，以正辛醇-甲苯为萃取剂分离得到纯度为99%的邻硝基苯甲酸，收率为77%。

The 2-Nitrobenzoic with the purity of 99 % ( w.t. ) was separated by solvent extraction with 50 % ( v / v ) 1-octanol and 50 % ( v / v ) toluene as the extraction solvents , and the yield was 77 % .

实验结果表明，季铵盐A1对于高锰酸钾氧化邻硝基甲苯合成邻硝基苯甲酸，是1种优良的相转移催化剂。

The experiment results show that A1 is a good PTC for synthesis of ONBA with O nitrotoluene by oxidation of potassium permanganate .

钴酞菁催化氧气氧化邻硝基甲苯制取邻硝基苯甲酸

Process of Preparing o-Nitrobenzoic Acid from o-Nitrotoluene by Dioxygen Oxidation with Cobalt Phthalocyanine

研究了碱浓度Ma和邻硝基甲苯浓度MONT对氧气液相氧化邻硝基甲苯制取邻硝基苯甲酸的影响。

Effect of alkali concentration M a and 2 nitrotoluene concentration M ONT on preparation of 2 nitrobenzoic acid by means of oxygen oxidation of 2 nitrotoluene in liquid phase was investigated .