Under this conditions, the yield of propyl benzoate reached 70.5%.
上述条件下，苯甲酸丙酯的产率可达70.5%。
Ethyl and propyl gallate were synthesized without water carrying agent.
乙酯和丙酯的合成还摒弃了带水剂。
Under optimum synthetic condition, the yield of propyl ester was 93.5%.
在最佳反应条件下，尼泊金丙酯的产率为93.5%。
OBJECTIVE To synthesize thiamine propyl disulfide, a long-effect VitaminB1.
目的合成长效维生素B1丙硫硫胺。
These peaks correspond to side-chain cleavage of the ethyl and propyl groups respectively.
这些峰分别相当于乙基和丙基的侧链开裂。
Under this conditions, the yield of ethyl esters was 85%, propyl ester 94% and butyl ester 92%.
上述条件下，尼泊金乙酯的产率为85% ，尼泊金丙酯的产率为94 % ，尼泊金丁酯的产率为92 %。
A new processing method of propyl gallate was advanced in order to decrease the cost of production.
对常见的没食子酸丙酯提出一种尚未见报道的制备方法，可以大幅度地降低生产成本。
Methanol, n-propyl alcohol, acetonitrile and carbon tetrachloride were selected as "molecular probe".
选用甲醇、正丙醇、乙腈、四氯化碳作探针分子。
Under these conditions, yields of 87.5%, 89.2%and 91.1%can be reached for the ethyl ester, propyl est...
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%。
The disequilibrium of isoamylol and normal propyl alcohol directly caused the bitterness in grape wine etc.
葡萄酒中的苦味是由异戊醇与正丙醇失去平衡造成等等。
GREEN propyl lactate is 100% miscible at room temperature with water as well as with most organic solvents.
乐林乳酸丙酯在常温下可溶于水和多种有机溶剂。
One of these compounds, pyribambenz-propyl was successfully developed as a potent herbicide for rape field.
丙酯草醚是该类化合物中已成功开发的一种新型高效油菜田除草剂。
A kind of environment protectional benzene-propyl later paint, which was suit to coat inner wall was prepared.
研制了一种适用于内墙涂装的环保型苯-丙乳胶漆。
Under this conditions, the yield of ethyl ester, propyl ester and butyl ester respectively is 87.5%, 89.2% and 91.1%.
上述条件下，尼泊金乙酯的产率为87.5% ，尼泊金丙酯的产率为89.2 % ，尼泊金丁酯的产率为91 .1 %。
The casting process and reverse osmosis (RO) properties of hydroxy-propyl cellulose acetate (HPCA) membrane were studied.
研究了羟丙基醋酸纤维素反渗透膜的制膜工艺和膜性能。
METHODS the orthogonal design method was used to optimize the formulation. Hydroxy propyl methyl cellulose was used as matrix.
方法采用正交设计以体外溶出为指标，以羟丙基甲基纤维素为阻滞剂，进行处方筛选。
This standard solution was accurately prepared in super-clean laboratory with iso-propyl benzene and sub-packed in 2ml ampoules.
本标准溶液以纯异丙苯在超净实验室中准确配制并分装于2毫升安瓿中。
Methyl, ethyl, propyl and butyl sorbates were synthesized by esterification of sorbic acid with four kinds of alcohol respectively.
采用直接酯化法，将山梨酸与四种醇反应，合成了山梨酸甲酯、乙酯、丙酯、丁酯。
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%。
The structure of the by-product was affirmed by GC-MS in iso-propyl esterification and the formation mechanism of the by-product was proposed.
用GC - MS计确定了异丙酯酯化反应中副产物的结构，并提出了生成该副产物的反应机理。
Ingredients: L-Ascorbic Acid, Carrot Seed, Hyaluronic Acid, Licorice Extract, Sea Urchin Extract, Collagen, Allantoin, Propyl Paraben, D. I Water.
成份：左旋维他命c、胡萝卜素、玻尿酸、甘草萃取液、海胆萃取液、胶原蛋白、尿囊素、保存剂、去离子水。
The way using crude material furoic acid and propyl alcohol to synthesize propyl furoate is researched by catalyst stannous oxide. The yield is 77%.
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 Company produces purified Zhong propyl butyl-carbinol and ester product which totally occupies 80% of the international and domestic market share.
公司生产的精制仲辛醇及其酯类产品占国际国内80%的市场份额。
A per-propyl emulsion for coatings, by emulsion polymerization, was prepared from methyl methacrylate (MMA), butyl acrylate and acrylic as raw materials.
本实验以甲基丙烯酸甲酯、丙烯酸丁酯和丙烯酸为主要原料，利用乳液聚合方法，制备了一种涂料用的纯丙乳胶。
This paper introduces a synthesis method of iso-propyl acetate, using acetic acid and iso-propyl alcohol as raw material and neodymium oxide as catalyst.
介绍了以乙酸和异丙醇为原料，以氧化钕为催化剂来制取乙酸异丙酯的方法。
Studies on Environmentally Sound Technology for Producing Piperonyl Butoxide I. Treatment of Waste Water from Chloromethylation of 5-propyl-1, 3-benzodioxole.
清洁的胡椒基丁醚生产工艺的研究i, 5 -丙基- 1,3 -苯并二氧杂茂的氯甲基化废水的处理。
Normal propyl cinnamylate was synthesized by the esterification of normal propyl alcohol with cinnamic acid in the presence of potassium bisulfate monohydrate.
应用硫酸氢钾催化肉桂酸与正丙醇的酯化反应合成肉桂酸正丙酯。
INGREDIENTS: Deionized water, hydrogenated poly-decene, methyl p-hydroxybenzoate p-hydroxybenzoic acid propyl, acrylic acid copolymer, mineral oil, daily flavor.
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: Vitamin a, Vitamin d, Vitamin e, Plant Amino Acid, Hyaluronic Acid, Collagen, Elastin, Eggshell Peptide, Elacin, Sesaflash, Propyl Paraben, D. I Water.
成份：维生素a、维生素d、维生素e、植物氨基酸、玻尿酸、胶原蛋白、弹力素、卵壳胜肽、弹力蛋白、芝麻蛋白、保存剂、去离子水。
Through orthogonal test was designed for optimal inhibition the new compound color fixative:green tea extract 0.03%, propyl gallate 0.005%, citric acid 1.0%, VE 0.01%.
前言： 利用柠檬酸、VE、 没食子酸丙酯、绿茶提取物各自的特性，通过正交实验最终确定了最佳的新型复合护色剂组合：绿茶提取物0.03%、没食子酸丙酯0.005%、柠檬酸1.0%、VE含量0.01%。
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