Acenaphthenone was prepared by the oxidation of acenaphthene in the presence of chromic anhydride , acetic acid and polyethylene glycol as a phase transfer catalyst under mild reaction conditions with high yields.

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5 % vanillin acetum and perchloric acid as color developer, the content of ursolic acid of kudingcha growed in Hainan province was determined at 548 nm.

用5％香草醛冰醋酸及高氯酸顯色，在波長(zhǎng)548nm處用分光光度法測(cè)定了海南苦丁茶中的熊果酸含量黄色视频在线一级视频。

The mobile phase was a mixture of acetonitrile 0.378 mol/L acetum (30∶70) and in a flow rate of 0.8 mL/min; The detective wavelength was 321 nm; Column temperature was room temperature and the injection quantity was 10 μ L.

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After acidify with hydrochloric acid, the plasma was extracted with ethyl ether and then analyzed by Hypersil ODS2 (250×4.6 mm,5 μm) column with the mobile phase of methanol-water-triethylamine-acetic acid(2500∶1500∶15∶7), and at the detection wavelength of 355 nm.

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The aliquot was determined and confirmed by gas chromatography-negative chemical ionization mass spectrometry using external standard method.

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The linear ranges were 14.0￣140 μg/ml( r = 0.9998 ) for caffeine; 27.0￣270.0 μg/ml ( r = 0.9998 )for antipyrine; 0.1￣1.0 mg/ml ( r =0.9999) for sodium salicylate.

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Aureomycin on reduction with zinc-acetic acid gives desdimethylaminoaureomycin under mild conditions and desdimethylaminodesoxyaureomycin under more drastic conditions.

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China,calcium carbide, acetic acid,vinyl acetate,pentaerythrite,polyvinyl butyral resin,polyvinyl butyral film,"AVS"paint for interior and exterior walls,cement,carbonized bricks etc,over 40 chemicals and building materials.

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They were fed with medicine intragastrically. The earlap inflammation caused by bimethylbenzene, the effect on pain induced glacial acetic-acid, the influence on the penetrability of capillary vellset in the abdominal cacity and the weight of rat cotton-ball granuloma were observed. 2.Acute toxicity test: Twenty mice were fed with the rhinitis capsule solution of most concentration and volume by intragastrically. All the actions and the appearance of major organs were observed in twenty-four hours and one week.

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To be different from the already chloromethylation catalyst, it has a certain amount of moisture wet, which will not produce huge amounts of doughtic cancerogenic chloromethyl methyl ether during and after the reaction.4,4\'-bisbiphenyl, 1,4-bisbenzene, 1,4-bis(chloro- methyl)-2,5-dimethylbenzene, 1,5-bis-2,4-dimethylbenzene, 4-(chlor- omethyl)-1,2-dimethylbenzene, 1,2-bis-4,5-dimethylbenzene, 5,8-bis-1,2,3,4-tetrahydronaphthalene, 3,3\',5-tris-4,4\'-bisbiphenyl and 3,3\', 5,5\'-tetrakis-4,4\'-bisbiphenyl were synth- esized by using this new catalyst. Results indicated that when the reaction temperature was 55～60℃, the reaction time was 12h, the catalyst which consists of the concentration of 80%H_2SO_4, HAc and Lewis acid, the amount of Lewis acid 0.15 mol(nLewis:nbiphenyl=1.5:1), yield of biphenyl chloromethylation product 4,4\'-bis(chrolomethylbiphenyl can reach a maximum 85%.

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glacial acetic acid：冰醋酸

別名:醋酸(acetic acid)、冰醋酸(glacial acetic acid)為了進(jìn)一步提升乳制品質(zhì)量安全保障水平,促進(jìn)乳業(yè)振興和發(fā)展,日前,國(guó)家認(rèn)證認(rèn)可監(jiān)督管理委員會(huì)首先在黑龍江開(kāi)展以乳制品生產(chǎn)企業(yè)良好生產(chǎn)規(guī)范(GMP)激情黄页免费网站、危害分析與關(guān)鍵控制點(diǎn)(HACCP)體系認(rèn)證試點(diǎn)示范工作,

glacial acetic acid：冰乙酸(冰醋酸)

ginsenoside|人參皂苷 | glacial acetic acid|冰乙酸,冰醋酸 | gland|腺體

glacial acetic acid：[化]冰醋酸,即 acetic acid glacial用于急制及定影藥

giant enlargement 巨幅放大法 | glacial acetic acid [化]冰醋酸,即 acetic acid glacial用于急制及定影藥 | Glamour Photography 美感攝影,常指以女性為題材

acetic acid glacial：冰醋酸

蘇打粉 Soda Ash Light 99.2% | 冰醋酸 Acetic Acid Glacial | 谷氨酸鈉 Monosodium Glutamate

acetic acid glacial：[化]冰醋酸[即結(jié)晶如冰狀的醋酸,用于急制及定影藥]

acetic acid [化]醋酸用于停影性26uuuu欧美、定影、漂白及過(guò)調(diào)藥,亦乙酸 | acetic acid, glacial [化]冰醋酸即結(jié)晶如冰狀的醋酸,用于急制及定影藥 | acetone [化]丙酮有機(jī)溶劑,配用于不溶于水的化學(xué)物

acetic acid fermentation：乙酸發(fā)酵

acetic acid 醋酸 | acetic acid fermentation 乙酸發(fā)酵 | acetic acid glacial 冰醋酸

acetic acid fermentation：乙(醋)酸發(fā)酵

acetic acid ethyl ester乙酸乙酯 | acetic acid fermentation乙(醋)酸發(fā)酵 | acetic acid glacial冰乙酸,冰醋酸

Calcium carbonate precipitated：沉定碳酸鈣

冰乙酸(冰醋酸) Glacial acetic acid | 沉定碳酸鈣 Calcium carbonate precipitated | 赤蘚紅 Erythrosine

Glacial acetic acid min：冰醋酸

冰醋酸 GLACIAL ACETIC ACID FOOD GRADE | 冰醋酸 Glacial acetic acid min. 99.5% | 冰醋酸 Acetic acid glacial

GLACIAL ACETIC ACID FOOD GRADE：冰醋酸

松香 GUM ROSIN WW GRADE | 冰醋酸 GLACIAL ACETIC ACID FOOD GRADE | 乙酸乙酯 ETHYL ACETATE FOOD GRADE