二羟基苯甲酸甲酯(6);
车间放大试验结果显示,苯甲酸甲酯的得率为89.00%。
Experimental result in an enlarged workshop scale shows that the yield of methyl benzoate is 89.00%.
氢化苯甲酸甲酯和乙酯时,被氢化物与溶剂之比率很重要的。
The ratio of solvent to reactant to be hydrogenated was critical.
采用于多相选择加氢方法由对甲氧基苯甲酸甲酯合成大茴香醛。
The present invention features the multiple phase selective hydrogenation process to synthesize anisic aldehyde with methyl methoxybenzoate.
不含防腐剂、人工色素、香料、矿物油,对羟基苯甲酸甲酯、矿油。
Free of preservatives, artificial color, fragrance, mineral oil, parabens, petroleum.
方法:以5 氯2 羟基苯甲酸甲酯为原料,经硝化、还原等九步反应合成。
METHOD: It was synthesized from methyl 5-chloro-2-hydroxyl benzoic acid via nine-step reaction with nitration, reduction, etc.
一种对甲氧基苯甲酸甲酯选择加氢合成大茴香醛的方法,属于精细化工催化技术领域。
The present invention relates to selective hydrogenation process of methyl methoxybenzoate to synthesize anisic aldehyde, and belongs to the field of fine chemical catalysis technology.
氢化苯甲酸甲酯和乙酯时,应用催化剂量多少,似对产量无影响,惟对氢化作用速度有关系。
The amount of catalyst used for the hydrogenation of methyl benzoate and ethyl benzoate did not affect the yields, but affected the speed of hydrogenation.
分析了添加不同量的对羟基苯甲酸或对羟基苯甲酸甲酯对样品凝聚粒子含量及流变性能的影响。
The effects of the amount of additive on the coagulate particle contents and rheologic properties are analyzed.
以2,4-二羟基苯甲酸甲酯为原料,经过氯代反应、水解反应、脱羧反应合成2,4-二氯间苯二酚。
The compound 2,4-dichlororesorcinol was obtained from the starting material 2,4-dihydroxybenzoate via chlorinated reaction, hydrolysis and decarboxylation.
主要成份:去离子水、氢化聚癸烯、对羟基苯甲酸甲酯、对羟基苯甲酸丙酯、丙烯酸共聚物、矿物油、香料。
INGREDIENTS: Deionized water, hydrogenated poly-decene, methyl p-hydroxybenzoate p-hydroxybenzoic acid propyl, acrylic acid copolymer, mineral oil, daily flavor.
最近的媒体报道,一批来自上海零度可乐原液中含有“对羟基苯甲酸甲酯”防腐剂,引发了大家对饮料安全性的关注。
Recent media reports that a batch of Coke Zero concentrate from Shanghai contained the banned preservative methyl-p-hydroxybenzoate sparked concern about the safety of beverages.
以对羟基苯甲酸甲酯、1,4丁二醇为主要原料,经熔融酯交换合成介晶基元双-对羟基苯甲酸丁二醇酯(BBHB);
Bis(p-hydroxybenzonic acid butanediolate)(BBHB)as mesogenic unit was prepared with methyl p-hydroxybenzoate, 1,4-butanediol and catalyst by melting transesterification.
以正辛醇为原料,合成1-溴辛烷,并将1-溴辛烷与对羟基苯甲酸甲酯反应,然后水解,得到了4 -辛氧基苯甲酸。
1-bromooctane was manufactured by n -octanol as material, and reacted with methyl o -hydroxybenzoate, the 4-octanoxy benzoic acid was obtained.
去离子水、印度醋栗、红石榴提取液、茄红素、丙烯酸共聚物、酵母提取液、无花果精华、对羟基苯甲酸甲酯、咪唑烷基脲、丙二醇、甘油。
Ingredients: Deionized water, amalaki, pomegranate extract, lycopene, acrylic acid copolymer, yeast extract, fig essence, Methyl Paraben, imidazolidinyl urea, propylene glycol and glycerol.
它主要由苯甲酰氯和苯酚制备苯甲酸苯酯,然后重排、醚化所得。
It is based on phenol benzoate which is made from benzoyl chloride and phenol through rearrangement and etherification.
以对甲苯磺酸为催化剂,对二甲氨基苯甲酸和异丁醇为原料合成对二甲氨基苯甲酸异丁酯。
Isobutyl p-(dimethylamino) benzoate was synthesized by the esterification ofp-(dimethylamino)-benzoic acid with isobutanol using p-toluene sulfonic acid as the catalyst.
该法简单、快速、准确,可用于饼干、月饼等焙烤食品中糖精钠、富马酸二甲酯、苯甲酸和山梨酸的日常检测。
The method is simple, efficient and accurate, and suitable for routine analysis of saccharine sodium, dimethyl fumarate, benzoic acid, and sorbic acid in baked food such as biscuits and moon cakes.
它们是乙酸、苯甲醛、正葵酸、14-甲基十五烷酸甲酯、丙三醇、苯甲酸、6 ,9-十八碳二烯酸甲酯、角鲨烷、硬脂酸和二十烷基油酸酯。
They were acetic acid, benzaldehyde, n caproic acid, 14 methyl pentadecanoic methyl ester, glycerin, benzoic acid, 6,9 octadecadienoic methyl ester, squalane, stearic acid and oleic eicosyl ester.
以溴代环己烷和苯甲酸乙酯为原料,经过两步反应合成了甲基丙烯酸二环己基苯甲酯。
With bromocyclohexane and ethyl benzoate as raw materials, dicyclohexylphenylmethyl methacrylate was synthesized by two steps.
结论3,4 -二甲氧基苯甲酸冰片酯为亲脂性化合物,该实验结果可为3,4 -二甲氧基苯甲酸冰片酯进一步的研究提供依据。
Conclusion 3, 4-dimethoxy bornyl benzoate is hydrophilic. The result will supply evidence for the further research of 3, 4-dimethoxy bornyl benzoate.
通过改变硫酸二乙酯的用量、水杨酸甲酯与氢氧化钾的反应时间、氢氧化钠的用量,得到了2-乙氧基苯甲酸的优化制备工艺条件。
The reaction conditions of 2-ethoxybenzoic acid were optimized by changing the amount of diethyl sulfate, reaction time of methyl salicylate and potassium hydroxide, the amount of sodium hydroxide.
通过改变硫酸二乙酯的用量、水杨酸甲酯与氢氧化钾的反应时间、氢氧化钠的用量,得到了2-乙氧基苯甲酸的优化制备工艺条件。
The reaction conditions of 2-ethoxybenzoic acid were optimized by changing the amount of diethyl sulfate, reaction time of methyl salicylate and potassium hydroxide, the amount of sodium hydroxide.
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