邻苯二甲酸二乙酯作为一种香味在香水中被使用时,其他的未被列出的成分似乎仅仅是帮助发明这种古龙水的特殊香味,但这并不意味着他们是无害的。
While DEP is used as a solvent in the fragrances, other unlisted ingredients seem to help create the cologne's particular scent -- but that doesn't mean they're harmless.
其制备方法是以氯化铵为催化剂,原甲酸三乙酯为解水剂,由无水乙醇和环己酮缩合合成。
Cyclohexanone diethyl acetal was prepared from cyclohexanone with anhydrous ethanol as reactant, ammonium chloride as catalyst, triethyl orthoformate as water scavenger.
三聚氰胺是通过乙腈和水的混合物将其从肌肉组织中提取出来的。
Melamine is extracted from muscle tissue with a mixture of acetonitrile and water.
本文提出了在乙腈- 乙醇-水混合溶剂中以柠檬酸钠作络合剂, 三氯化钛还原非水溶性偶氮染料和颜料。
Sodium citrate was used as a complex catalyst for the titanium trichloride to reduce insoluble azo dyes and pigments in acetonitrile-alcohol-water system.
以三聚氰胺及未改进的乙二醛为基质的抗水剂,因本身会发生聚合反应,会造成纸张质量的负面影响。
The water-resistance agent with melamine and un-improved glyoxal as matrices has negative effects on the paper quality because of the polymerization potential of its own.
以乙腈-水(1:4)为流动相;
以硅酸钠、乙酸乙酯、聚丙烯酰胺等为主要成分制备出亲水膜层。
Hydrophilic membranes were prepared with key components of sodium silicate, acetic ether, polyacrylamide, etc.
乙酯和丙酯的合成还摒弃了带水剂。
Ethyl and propyl gallate were synthesized without water carrying agent.
将杠柳枝皮粉末的乙醇提取物悬浮于水后,依次用石油醚、乙酸乙酯和正丁醇萃取。
The ethanol extract from the twig bark powder of Periploca sepium was suspended in water and successively treated with petroleum ether, ethyl acetate and n-butanol.
乳酸乙酯易溶与水和多种有机溶剂。
Ethyl lactate is partly miscible with water and most organic solvents.
以决明子为原料,分别用乙酸乙酯、正丁醇和水制备粗提取物。
Juemingzi extracts were prepared with ethyl acetate, n-butanol and water respectively.
采用氨基键合硅胶柱,以乙腈-水(75∶25)为流动相,使用示差折光检测器。
NH2 column was used with the mobile phase of acetonitrile-water (75:25). The differential refractive index detector was used.
重组酵母菌经冻干能有效地实现在非水相中全细胞催化己酸和乙醇酯化合成己酸乙酯。
We constructed a CALB-displaying yeast whole-cell biocatalyst and applied it to esterification from caproic acid and ethanol.
用初始流动相乙腈-水(40:6 0)洗脱至主峰出峰保留时间的2.3倍时开始进行梯度洗脱比较合理。
The gradient elution is reasonable when the retention time is 2.3 times after the appearance of prominent peak with initial mobile phase acetonitrile-water (40:60).
采用高速逆流色谱法(HSCCC),以正己烷氯仿甲醇水组成二相系统作为固定相与流动相,对黄芪的乙酸乙酯粗提物进行了分离纯化。
Preparative high-speed counter-current chromatography (HSCCC) was used for the separation of calycosin and formononetin from the ethyl acetate extract of Astragalus membranaceus Bge.
黄芩:采用硅胶G板,以醋酸乙酯-丁酮-甲酸-水(5:3:1:1)为展开剂,显色剂为1%三氯化铁乙醇溶液。
Radix Scutellariae was examined by Silca gel-G, the mobile phase was ethyl acetate-butanone-formic acid-water (5:3:1:1).
性质白或淡黄色粉末,溶于苯、乙醇、乙酯,不溶于水,微溶于汽油。
Properties Grey white or light yellow powders, soluble in benzene, alcohol and ethyl acetate, insoluble in water, somewhat soluble in gasoline.
传统的水解工艺是采用酒精作为中间媒介来促使硅酸乙酯与水的接触,进而发生水解反应,生产硅酸乙酯水解液。
The alcohol is used as medium to generate hydrolyzate of ethyl silica te in traditional ceramic mold casting process.
采用溶胶—凝胶法,以正硅酸乙酯、异丙醇、水为原料制备了掺杂有机颜料酞菁蓝的玻璃表面装饰膜。
Decoration film on glass surface doped with phthalocyanine blue was prepared by sol-gel process using tetraethoxysilane, isopropanol and water as the raw materials.
实验表明,山稔子水、无水乙醇、甲醇、50%甲醇、正己烷和乙酸乙酯的提取物对猪油和花生油均具有抗氧化作用,而且其抗氧化作用的强弱与溶剂的极性直接相关。
The results showed that all the water, alcohol, methanol, 50% methanol, n-hexane and acetic ester extracts have antioxidation on lard and peanut oil.
本文通过实验确定了40%乙草胺水乳剂的最佳配方,并对其粒径进行了测定,研究了其冷、热贮稳定性。
The best formula of 40% acetochlor emulsion in water was ascertained and its particle size was measured. The cold and hot storage stability of the preparation were also studied.
通过对PMEW萃取分离发现,在甲醇水、氯仿、石油醚和乙酸乙酯四种萃取物中仍以甲醇水的萃取率最高。
In four extracts from PMEW treated with methyl alcohol and water, petroleum ether, chloroform and ethyl acetate, extract rate of methyl alcohol and water was the highest.
通过对PMEW萃取分离发现,在甲醇水、氯仿、石油醚和乙酸乙酯四种萃取物中仍以甲醇水的萃取率最高。
In four extracts from PMEW treated with methyl alcohol and water, petroleum ether, chloroform and ethyl acetate, extract rate of methyl alcohol and water was the highest.
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