上述条件下,苯甲酸丙酯的产率可达70.5%。
Under this conditions, the yield of propyl benzoate reached 70.5%.
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.
两岁幼儿吸收(防腐剂)对羟基苯甲酸丙酯和对羟基苯甲酸丁酯类防腐剂的数量可能会产生类雌激素风险,导致内分泌系统障碍。
The amounts that two-year-olds absorb from the [preservative] parabens propylparaben and butylparaben can constitute a risk for oestrogen-like disruptions of the endocrine system.
上述条件下,对羟基苯甲酸乙酯的产率为87.5%,对羟基苯甲酸丙酯的产率为89.2%,对羟基苯甲酸丁酯的产率为91.1%。
Under these conditions, yields of 87.5%, 89.2%and 91.1%can be reached for the ethyl ester, propyl ester, and butyl ester, respectively.
上述条件下,对羟基苯甲酸乙酯的产率为87.5%,对羟基苯甲酸丙酯的产率为89.2%,对羟基苯甲酸丁酯的产率为91.1%。
Under these conditions, yields of 87.5%, 89.2%and 91.1%can be reached for the ethyl ester, propyl est...
研究了以蔗糖酯及壳聚糖为涂膜剂,并配合防腐剂对羟基苯甲酸丙酯对青椒进行涂膜保鲜处理,观察青椒在贮藏期间亚硝酸盐含量的变化。
The preservation of green peppers by using sucrose ester, chitin and propyl-p-hydroxybenzoate was studied, and the nitrite content of green pepper during storage was analyzed.
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.
以呋喃甲酸和正丙醇为原料,氧化亚锡为催化剂,合成了呋喃甲酸正丙酯,产率可达77% 。
The way using crude material furoic acid and propyl alcohol to synthesize propyl furoate is researched by catalyst stannous oxide. The yield is 77%.
研究了染色条件对聚对苯二甲酸丙二酯(PTT)纤维上染率、纤维截面直径、力学性能和回弹性能的影响。
It was studied that the effects of dyeing conditions on the dye-uptake, cross sectional diameter, mechanical properties, and elastic recovery properties of PTT filament.
主要介绍聚对苯二甲酸丙二酯(PTT)的单体、聚合体和纤维的制备方法及其性质,并对PTT纤维的应用前景进行了探讨。
In this paper, a review on the prepairing technology of the monomer, polymer and fiber of PTT and their properties have been given, and the application future of PTT fibers has been discussed.
本文利用对叔丁基苯甲酸、钛酸四异丙酯和正硅酸乙酯合成了钛类新型成核剂,考察了此类成核剂的性能;
In this paper, a kind of new titanium nucleating agents were prepared by isopropyl titanate, p-tert-butyl-benzoic acid and tetraethyl orthosilioate, and their performance were investigated.
本文利用对叔丁基苯甲酸、钛酸四异丙酯和正硅酸乙酯合成了钛类新型成核剂,考察了此类成核剂的性能;
In this paper, a kind of new titanium nucleating agents were prepared by isopropyl titanate, p-tert-butyl-benzoic acid and tetraethyl orthosilioate, and their performance were investigated.
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