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- The synthesis methods of nipagin esters catalyzed by sulfuric acid, p- toluene sulfonic acid, ferric sul-fate hydrate, ferric chloride hexahydrate, aluminium chloride hexahydrate, rare earth compound, solid super acid and heteropoly acid were reviewed. 评述了采用硫酸、甲苯磺酸、合硫酸铁、水合三氯化铁、水合三氯化铝、土化合物、体超强酸和杂多酸等催化剂催化合成对羟基苯甲酸酯的方法。
- Keywords sulphur trioxide;sulphonation;methybenzene;P - toluene sulfonic acid; 三氧化硫;磺化;甲苯;对甲苯磺酸;
- p - Toluene sulfonic acid 对甲苯磺酸
- p- Toluene sulfonic acid 对甲苯磺酸
- toluene sulfonic acid 甲苯磺酸
- Di 2 ethylexyl maleate is synthesized from maleic anhydride and isooctyl alcohol using toluene p sulfonic acid as a catalyst. 以顺丁烯二酸酐和异辛醇为原料,用对甲苯磺酸作催化剂合成顺丁烯二酸二异辛酯。
- Allyl perfluorocaprylate was synthesized with p-toluene sulfonic acid as esterication catalyst,p-benzenediol as polymerization inhibitor and toluene as solvent,yield>90%,purity>99%(GC). 以对甲苯磺酸为催化剂,对苯二酚为阻聚剂,甲苯为溶剂,全氟辛酸与丙醇发生酯化反应制得全氟辛酸烯丙酯,产品收率>90%25,纯度>99%25(GC)。
- Coal tar , acetic acid,dodecylbenzene Sulfonic Acid. 本品为深褐色液体；有醋酸及煤焦油的特臭。
- Sulfonic acid is a foaming acid available from some of the oil companies. 磺酸是从一些炼油公司获得的一种起泡酸。
- Eastman-AQ is a new kind of polymer (ester sulfonic acid) cation exchanger. Eastman-AQ(AQ-55D,AQ-29D)是一种新的聚合物(磺酸酯)阳离子交换剂,涂于玻碳电极上,形成的膜具有强的附着力、高的选择性、良好的离子交换及防污性能。
- Method phenol sulfonic acid chromatometry was used in the experiment. 结果翼首草含糖量较高,且不同药用部位含糖量不同。
- Method The rat model of ulcerative colitis was induced with2,4,6 trinitrobenzene sulfonic acid. 方法采用三硝基苯磺酸法制备大鼠实验性溃疡性结肠炎模型。
- A series of gallate ester were prepared in use of dodecyl benzene sulfonic acid as catalyst. 以工业用十二烷基苯磺酸为催化剂制备了一系列没食子酸酯,讨论了影响酯化反应的各种因素。
- Methods AEO 9 and dodecylbenzene sulfonic acid of different weight ratio were mixed in the solutions. 目的探讨脂肪醇聚氧乙烯醚(AEO)9水溶液增稠条件。
- Dodecylbenzene sulfonic acid was used as catalyst for the preparation of polyethylene glycol diacrylate. 用十二烷基苯磺酸作酯化催化剂,制备聚乙二醇二丙烯酸酯。
- The synthesis of feruloylated monoacylglycerol catalyzed by P-Toluene sulfonic acid was investigated. 研究对甲基苯磺酸催化合成阿魏酸单甘油酯的工艺。
- Effect of amino sulfonic acid on hypochlorite bleaching of masson pine kraft pulp was experimented. 试验了氨基磺酸对马尾松硫酸盐化学木浆次氯酸盐漂白的影响。
- A new water soluble color reagent 1 (5 bromo 2 pyridylazo) 2,7 hydronaphthoquinone 6 sulfonic acid (5 Br PADN S) was synthesized. 报道了水溶性 1－（5－溴－2－吡啶偶氮）－2，7－萘二酚－6－磺酸（5－Br－PADN－S）的制备方法及其分析特性。
- The n-octyl gallate was prepared by esterification of alcohol and gallic acid in catalysis system of dodecyl benzene sulfonic acid. 以十二烷基苯磺酸为催化剂,酸醇直接酯化合成没食子酸正辛酯。
- Propanediol bisoleate were synthesized from oleic acid and 1,3-propanediol using p-toluene sulfonic acid as the catalyst. 以对甲苯磺酸为催化剂,油酸和1,3-丙二醇为原料合成了1,3-丙二醇油酸双酯。
