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- 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。
- Removal of Normal Propyl Alcohol to Improve Molasses Alcohol Quality 去除正丙醇提高糖蜜酒精质量
- Keywords normal propyl cinnamylate;cinnamie acid;normal propyl alcohol;potassium bisulfate;esterificstion; 肉桂酸正丙酯;肉桂酸;正丙醇;硫酸氢钾;酯化;
- normal propyl alcohol 正丙醇
- Normal propyl alco-hol belongs to medium impurity and dissolves in water and alcohol,its boiling point is similar as alcohol. 正丙醇属中级杂质;与水、乙醇混溶;沸点较接近乙醇;分离难度较大。应从多方面着手;控制正丙醇含量:1.;使用产正丙醇少的酵母菌种。
- Propyl glycidyl ether(PGE) was obtained from propyl alcohol and epichlorohydrin by phase-transfer catalysis. 以环氧氯丙烷和正丙醇为原料,通过相转移催化法合成了正丙基缩水甘油醚。
- Iso propyl alcohol as the standard was used to quantify the ethanol. The method is convenient and accurate,the recovery is 100.4%. 以异丙醇为内标进行定量 ,该法方便易行 ,准确可靠 ,回收率达 10 0 4%25
- A new low volatile stripper with benzene alcohol (BA), methyl propyl alcohol (MPA) and di-ketone alcohol (DKA) as the main solvents is prepared. 摘要以苯甲醇(BA)、丙二醇乙醚(MPA)和二丙酮醇(DKA)为主溶剂制成低挥发性脱漆剂，考察了主溶剂、促进剂的种类、用量等因素对脱漆效果的影响。
- Through chromium sour oxidize propyl alcohol system ester law study in sulphuric acid acetic acid system in, proply acetate and proply propanoate form mechanism, and related influencing factor. 通过铬酸氧化丙醇制酯法;研究在硫酸-乙酸体系中;乙酸丙酯及丙酸丙酯的形成机理;及相关影响因素.
- The way using crude material furoic acid and propyl alcohol to synthesize propyl furoate is researched by catalyst stannous oxide.The yield is 77%.The product is late model synthesize spice. 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%25.;产品为一种新型合成香料
- A rapid reverse high performance liquid chromatography method based on the iso - propyl alcohol as an agent of pre-deri-vatization is developed for the determination of 2-acetoxyisobutyryl bromide. 以异丙醇为柱前衍生试剂,建立了反相高效液相色谱法间接测定2-乙酰氧基异丁酰溴的新方法。
- Reduction of propyl alcohol by dilute distillation 稀释蒸馏是降低正丙醇的有效途径
- The Mechanism of the Propyl Alcohol Oxidize Ester of Legal System 丙醇氧化法制酯的机理
- The computer has a normal qwerty keyboard. 这台计算机有标准的英文键盘。
- The situation has returned to normal in the city. 这座城市的局势已恢复正常。
- The normal return fare to New York is fifty-six. 去纽约的来回票标准价是56元。
- Everything is absolutely normal. 一切完全正常。
- This case is not amenable to the normal rules. 这件事经不起常规的检验。
- The doctor said the child's temperature was normal. 医生说孩子体温正常。
- Discussion on the separating characteristic of propyl alcohol in alcohol distillation 酒精蒸馏过程正丙醇分离特性的讨论
