acetone造句
61. The slides are first cleaned ultrasonically several times in alternate baths of trichlorethylene and acetone, and are then scrubbed with a mildly abrasive detergent.
62. Among them, alcohol, 2- acetone, ethyl acetate, ethanoic acid, 3- methyl -1- butylacohol, 3- hydroxyl -2- methyl ethyl ketone made up the main volatile constituent fermentation sausage.
63. Innovatation of physical chemistry experiment and some considerations were discussed combining with improvement of acetone iodinating experiment.
64. The results show that increasing reaction temperature, using acetone as cosolvent or sodium dodecyl sulfate as phase-transfer reagent can accelerate the reaction.
65. The conversion of benzaldehyde and yield of benzylidene acetone were influenced by reaction time, temperature and initial water volume.
66. The process includes hydrochloric acid pretreatment, acetone extraction, hydrolysis of astaxanthin esters by catalysis of basic ion exchange resin, and adsorption separation.
67. Prop. :White triangle crystal, easy deliquescence, with taste of acetic acid, soluble in water and ethanol, insoluble in acetone.
68. It was suggested that normal pressure hydrogenation of acetone, an one-step process, be used, plant for production of MIBK be constructed as soon as possible, to meet the increasing need of MIBK.
69. This paper presents a method to determine acetone cyanohydrin in the air of workshop with spectrophotometry.
70. Using ethyl alcohol, acetone and ethyl acetate as the solvents, 3 kinds of extracts of Capsicum frutescens L. var. Fasciculatum were prepared respectively.
71. The catalytic distillation of the reaction of acetone to diacetone alcohol was studied. The effect of the operating conditions on the catalytic distillation was investigated experimentally in detail.
72. The mixture of chloroform and anisole is used to replace chloroform or acetone with better results in cantharidin abstraction efficiency and reappearance.
73. This paper is made for evaluate the revamp possibility of Xiqu phenol - acetone plant.
74. Polystyrene supported polyethylene glycol was used as catalyst in the condensation reaction of citral and acetone, yield of pseudoionone was 77.4%.
75. Do not clean PC sheets with benzene, gasoline, acetone, or tetra chloromethane.
76. Under suitable conditions, the conversion on 1 , 2 - propanediol and the selectivity on acetone aldehyde is 69 %.
77. No osmyl and no taste. Soluble in Benzene, Acetone, C2H4Cl2, CS2, toluene, party soluble in alcohol, diethyl ether, insoluble in water, gasoline.
78. Diacetone acrylamide was synthesized with acrylonitrile and acetone as raw material and with trifluoroacetic acid and concentrated sulfuric mixed acid as catalyst.
79. The freshly abraded specimen must then be washed in industrial spirit and Analar acetone.
80. The output of acetone and dichloromethane which raw material volatilized is little.
81. Acetone Finger nail polish remover , a preservative for dead frogs, an insecticide.
82. The study shows that blocking oxygen is the effective method to control enzymatic browning. The results are summarized as follows:(1) PPO was extracted from Granny Smith with acetone.
83. Objective To experimentally study the anticonvulsant activity of an acetone - extract form Stellera chamaejasme L . ( AESC ).
84. Main methanol, ethanol, ethylene glycol, acetone, ethylene dichloride, methylene chloride, diethylene glycol.
85. The World Cup replica consisted of 11kg of cocaine mixed with either acetone or possibly petrol to make it moldable.
86. Xanthoxylin was extracted from Zanthoxylum Bungeanum Maxim of Sichuan Hanyuan using absolute ethyl alcohol, ether, acetone and water as solvent.
87. Powdered soybean phospholipid was extracted from fresh hydrated oil footings with acetone extraction method.
88. The process flow was designed and experimentally studied for separation of acetone, tetrahydrofuran(THF) , triethylamine and water mixture.
89. METHODS Mengoferin was dissolved in water and acetone, then dripped with sodium bicarbonate solution.
90. The result shows that, on over 2.5 times content of Daidzin in materials can be arrived with the hybrid extraction of acetone and ethyl acetate.
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