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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 对甲苯磺酸
- sodium p-octadecyl toluene sulfonate 十八烷基甲苯磺酸钠
- 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。
- p- Toluene sulfonic acid 对甲苯磺酸
- I mind my p's and q's whenever I see him. 每当我见到他我都谨慎行事。
- In English, b, p, m and w are bilabials. 英语中的b、p、m、w为双唇音。
- toluene sulfonic acid 甲苯磺酸
- AB and CD intersect at (the point) P. AB线和CD线在P点相交。
- The time now is 10:00 p, m, sharp. 现在的时间是晚上10点整。
- Sulfone Addition to Inhibit the Side Reaction in Toluene Sulfonation 二甲苯砜加入法抑制甲苯磺化副反应
- Toluene is allergic. With what medicine good? 甲苯过敏了.;用什么药好?
- The "d" in "grandpa" has been lost by assimilation to "p". "grandpa"中的"d"因受"p"的同化而不发音。
- copper p - toluene sulfonate 对甲苯磺酸铜
- copper p--toluene sulfonate 对甲苯磺酸铜
- The light now shining on P is called incident ray. 射到P点的光叫做入射光线。
- 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。
- Thermometers are filled with fluids such as toluene or alcohol. 温度计装有甲苯或酒精。
