20. 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。
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21. 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。
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22. 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% 。
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23. 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。
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24. A per-propyl emulsion for coatings, by emulsion polymerization, was prepared from methyl methacrylate (MMA), butyl acrylate and acrylic as raw materials.
25. 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。
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26. 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。
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27. Normal propyl cinnamylate was synthesized by the esterification of normal propyl alcohol with cinnamic acid in the presence of potassium bisulfate monohydrate.
30. 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%.