Benzylidene acetone exports accounted for first in the country.

苄叉丙酮的出口量占全国第一。

Some holoenzymes, such as pyruvate dehydrogenase, are highly compex, with several cofactors.

有一些全酶是高度复杂的，如丙酮酸脱氢酶。

A method for the synthesis of hexylene glycol by catalytic hydrogenation from diacetone is presented.

介绍以双丙酮醇为原料,经催加氢合成异己二醇的方法。

The freshly abraded specimen must then be washed in industrial spirit and Analar acetone.

然后，研磨好的新鲜试样必须在工业酒精及纯丙酮中洗涤。

Benzaldehyde and acetone used as materials,the benzylidene acetone is synthesized in the presence of potassium fluoride on alumina.

以苯甲醛和丙酮为原料,氟钾氧催合成了苄叉丙酮。

Dimethyl dioxirane was prepared with potassium monoperoxy sulfate and acetone.

过过一硫酸和丙酮反应,合成了新型高效的氧二甲二氧环烷。

The curve and its character of the vapor liquid equilibrium of aceton water system was researched.

研究了丙酮水的相平衡曲线与特点。

Benzalacetone 1,2-propylene glycol ketal was synthesized from benzalacetone and 1,2-propylene glycol in the presence of ptoluene sulphonic acid.

以对甲苯磺酸为催,过苄叉丙酮与-1,2-丙二醇反应合成了苄叉丙酮-1,2-丙二醇缩酮。

No osmyl and no taste.Soluble in Benzene,Acetone,C2H4Cl2,CS2,toluene,party soluble in alcohol,diethyl ether,insoluble in water,gasoline.

溶于丙酮、苯、甲苯、二硫碳、二氯乙烷，微溶于乙醇和乙醚，不易溶于水和汽油。

It dissolves in hot grease, paraffine, ethanol, chloroform, acetone and aether, but is insoluble in water.

该产品不溶于水，热溶于油脂、石蜡、乙醇、氯仿、丙酮、乙醚。

Carbon tetrabromide was prepared from acetone and sodium hypobromite by adding tetrabutylammonium bromide.The yield and purity were very satisfactory.

向次溴酸钠溶液中滴加适量的丙酮,在四丁基溴铵催下,高产率得到四溴碳。

The preparation of hydroxyacetone was studied by esterification of chloroacetone with sodium formate and alcholysis of acetonyl formate with methanol.

以一氯丙酮、甲酸钠和甲醇为原料经酯与醇解两步反应合成羟基丙酮,研究了反应条件对相转移催酯以及醇解反应蒸馏过程的影响。

Methods The eyeballs of rat were fixed in the improved fixative solution mixed with paraform,glacial acetic acid and acetone.

方法将大鼠眼球投入到由多聚甲醛、冰醋酸和丙酮组成的改良固定液中固定后制成石蜡切片,经HE染色后在显微镜下观察。

Our main products: Sucralose, Metallic Stearates, Magnesium trisilicate, Magnesium silicate, Calcium acetylacetonate, Synthetic Aluminium Magnesium Carbonate Hydroxide etc.

公司主要产品有三氯蔗糖、硬脂酸盐、三硅酸镁、硅酸镁、乙酰丙酮钙、合成碱式碳酸镁等。

Xanthoxylin was extracted from Zanthoxylum Bungeanum Maxim of Sichuan Hanyuan using absolute ethyl alcohol, ether, acetone and water as solvent.

采用无水乙醇、乙醚、丙酮及水溶,对四川汉源花椒了精油提取研究。

Isopropenyl acetate was synthesized from ketene and acetone by direct esterification using strong acidic cation-exchange resin to substitute H2SO4 as catalyst.

以乙烯酮和丙酮为原料,用强酸性离子交换树脂代替浓硫酸为催,直接酯合成乙酰丙酮的中间体乙酸异丙烯酯。

On the basis of acetone-phosphomolybdate method to detect phosphorus, the microplate method was developed for the determination of activity units of phytase.

摘要在丙酮法测磷的基础上，在酶活测定时引入微板法。

However, other solvents, such as acetone and trichlorotrifluoroethane, were not and the procedure was adequate for recovering a known inoculum of spores.

不过其他溶（如丙酮和三氯三氟乙烷）就不会，操适用于回收孢子接种物。

Sometimes engineers will use chemicals to clean up of the master on the photoresist or chemical substance, such as hydrogen peroxide, acetonic.

有时工程师会拔取一些学品去纯不兴母盘上的平刻胶或学精神，如双氧水，丙酮。

Sevoflurane is synthesized from aceton by vapor phase catalytic fluorination, vapor phase catalytic hydrogenation,chloridization and fluoromethylation, which gives a new synthetic method.

以丙酮为原料，经氯、气相氟、气相氢及氟甲基等一系列改进的方法合成了七氟醚，提供了一条新的合成路线。