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Suitable water-immiscible organic solvents include aromatic hydrocarbons, eg toluene, xylene, naphthalene, tetrahydronaphthalene and methyl naphthalene; chlorinated aromatic hydrocarbons, eg chlorobenzene, fluorobenzene, chloronaphthalene and bromonaphthalene; esters, eg butyl acetate, ethyl acetate, methyl benzoate, ethyl benzoate, benzyl benzoate, butyl benzoate, phenylethyl acetate, butyl lactate, benzyl lactate, diethyleneglycol dipropionate, dimethyl phthalate, diethyl phthalate, dibutyl phthalate, di(2-ethylhexyl) phthalate; alcohols having six or more carbon atoms, eg hexanol, octanol, benzyl alcohol, phenyl ethanol, phenoxy ethanol, phenoxy propanol and phenoxy butanol; ethers having at least 5 carbon atoms, preferably C 5-14 ethers, eg anisole and phenetol; nitrocellulose, cellulose ether, cellulose acetate; low odour petroleum distillates; turpentine; white spirits; naphtha; isopropylbiphenyl; terpene; vegetable oil; mineral oil; essential oil; and natural oil; and mixtures of any two or more thereof.

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The synthesis method comprises the following steps: adding 2-( 5-(dimethylamino methyl- 2- furyl methyl sulpho ethylamine and 1- methylthio- 1- methylamino- 2- nitro ethylene with a molar ratio of 1.04: 1 into water, heating to 48- 52 Deg. C, reacting 4.5 hours with a vacuum degree of 0.02- 0.05 MPa, cooling, adding sodium-hydroxide of concentration of 10% to regulate the PH value to 11.0- 11.4, filtrating and cooling the filtrate to 0- 2 Deg. C, crystallizing for 12 hours, centrifugally filtrating, and rinsing filter cake with purity water to prepare wet ranitidine alkali; dissolving ranitidine alkali in alcohol and reacting with chlorhydric acid to prepare ranitidine hydrochloride.

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Guards against the facture and the correlation stipulation based on the air pollution defines, the air pollutant may divide into four big projects, respectively be the gaseity pollutant (including sulfur oxide compound bucket carbon monoxide, nitrogen oxide compound, hydrocarbon, chlorine, gasified hydrogen, fluoride, chlorhydrocarbon and so on), the granular pollutant (including suspended particulate matter, golden bureau coal smoke, black smoke, acid fog, falls dust and so on), two pollutant (refers to pollutant to pass through photochemical reaction in air to have pollution again, including photochemistry fog, photochemistry high oxide compound and so on) and odor matter (including chlorine, hydrogen sulfide, curing methyl, sulfur alcohol type, methyl amines) and so on.

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A preferred form of the invention is a process comprising adding to a quantity of sodium which is covered with a hydrocarbon solvent boiling above 100°C., at least a chemically equivalent proportion of methyl, ethyl or a propyl alcohol, subsequently adding an approximately equivalent proportion of a dialkyl carbonate and of an alkyl phenylacetate, the alkyl groups in these two last-mentioned compounds being preferably the same as the alkyl radical of the above-mentioned lower aliphatic alcohol, heating the mixture to induce reaction and continually distilling out the alcohol formed from the reaction zone.

本發(fā)明的理想形式包括下面的工藝過(guò)程：把至少處于化學(xué)平衡的甲醇，乙醇或丙醇添加到覆蓋著沸點(diǎn)超過(guò)一百攝氏度的碳?xì)浠衔锶軇┲猩低等似尴盗校又尤氪蠹s相同當(dāng)量的二烷基碳酸酯和烷基乙酸苯酯在线观看免费国产小视频，在剛才提到的化合物中性爱人人操欧美，其烷基集團(tuán)最好是和剛才提到的低級(jí)別脂肪族醇相同，然后加熱反應(yīng)混合物從而引導(dǎo)反應(yīng)的進(jìn)行破处流血视频，在反應(yīng)區(qū)域通過(guò)連續(xù)蒸餾移除形成的醇類久久精品黄色片一级片。

Process for the manufacture of a dialkylphenylethylmalonatewhich comprises adding to a quantity of sodium which is covered with a hydrocarbon solvent boiling above 100°C, at least a chemically equivalent proportion of methyl, ethyl or a propyl alcohol, subsequently adding an approximately equivalent proportion of a dialkylcarbonate and of an alkyl phenylacetate, the alkyl groups in these two last-mentioned compounds being preferably the same as the alkyl radical of the above –mentioned lower aliphatic alcohol, heating the mixture to induce reaction and continually distilling out the alcohol formed from the reaction zone and finally causing the sodio diethyl phenylmalonate so formed to interact with an ethylating agent.

生產(chǎn)二烷基苯基丙二酸酯的工藝過(guò)程：這包括這包括把至少處于化學(xué)平衡的甲醇，乙醇或丙醇添加到覆蓋著沸點(diǎn)超過(guò)一百攝氏度的碳?xì)浠衔锶軇┲谢埔惩久夥压劭吹氖悠担又尤氪蠹s相同當(dāng)量的二烷基碳酸酯和烷基乙酸苯酯极品美女污网站在线看免费，在剛才提到的化合物中，其烷基集團(tuán)最好是和剛才提到的低級(jí)別脂肪族醇相同天天插天天狠，然后加熱反應(yīng)混合物從而引導(dǎo)反應(yīng)的進(jìn)行亚洲毛片免费基地，在反應(yīng)區(qū)域通過(guò)連續(xù)蒸餾移除形成的醇類。最后使所形成的鈉代二乙基苯基丙二酸酯和乙基化試劑反應(yīng)日韩黄色免费网站。

By synthesizing the hapten LBc starting from the metabolite of bifenthrin (2-methyl-3-phenylbenzyl alcohol), LBs (2-methyl[1,1-biphenyl]-3-ylmethyl 3-carboxyl-2,2-dimethylcyclopropane carboxylate and Lby (2-methyl[1,1-biphenyl]-3-ylcarboxylic acid , Three haptens were praparaed which were used in next step.

利用聯(lián)苯菊酯的代謝物聯(lián)苯醇合成了聯(lián)苯菊酯的半抗原LBc(2-甲基-3-苯基芐基氧基羰基丙酸)黄片视频免费在线手机观看、LBs(2-甲基-3-苯基芐基-3-羧基一2，2-二甲基環(huán)丙烷羧酸)和LBy(2-甲基-3-苯基苯甲酸)A片一级做二级做免费看吧。

The Company perennial operating a variety of organic chemical raw materials, varieties include: methanol, ethanol, ethylene glycol, n-butyl alcohol, isobutyl alcohol, isopropyl alcohol, acetic acid, vinyl acetate, acetic acid acetate, acetic acid small lipid , styrene, toluene, phthalic anhydride, xylene, acetone, butanone, cyclohexanone, DMF, sulfuric acid, methyl isobutyl ketone, glycol ether, three toluene, octyl resin, melamine, etc. and so on.

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I for Hong Kong and Taiwan-owned business enterprises in the chemical industry more than twenty years of marketing, agent distribution Chemical famous brand, the main service items are as follows: methanol, ethanol, ethylene glycol, n-butyl alcohol, isobutyl alcohol, isopropyl alcohol, ice acetic acid, vinyl acetate, acetic acid acetate, acetic acid Ding resin, styrene, toluene, phthalic anhydride, xylene, acetone, butanone, cyclohexanone, DMF, sulfuric acid, methyl isobutyl ketone, glycol ether, three toluene, octyl resin, melamine, and so on.

我公司為港臺(tái)商獨(dú)資企業(yè)，于化工行業(yè)行銷二十余年黑人精品一区二区三区不卡，代理經(jīng)銷國(guó)外著名化工品牌欧美大胆a国产真实乱子伦级，主要服務(wù)項(xiàng)目如下：甲醇、乙醇男女晚上在床做gif图片视频、乙二醇美女性爱毛片、正丁醇、異丁醇韩国强奸伦轮免费毛片无码、異丙醇黄黄的精品视频在线播放1、冰醋酸、醋酸乙烯欧美熟女高潮、醋酸乙脂、醋酸丁脂怕怕怕免费网站18以上看、苯乙烯亚洲中文字幕视频一区、甲苯、苯酐800aⅤ、二甲苯污18禁污色黄网站免费午夜、丙酮、丁酮免费一级A片久久婷网站、環(huán)己酮国产精品久久精品福利网站、DMF、硫酸亚洲精品成人av小说网、甲基異丁基酮欧美狂野两个人看www、乙二醇丁醚、三甲苯三级欧美性爱、二辛脂国产精品久久久久久久、三聚氰胺，等等一级A片在线观看免费视频无码。

The company operating a variety of perennial organic chemical raw materials, varieties include: methanol, ethanol, ethylene glycol, n-butyl alcohol, isobutyl alcohol, isopropyl alcohol, acetic acid, vinyl acetate, acetic acid acetate, acetic acid Ding resin, styrene, toluene , phthalic anhydride, xylene, acetone, butanone, cyclohexanone, DMF, sulfuric acid, methyl isobutyl ketone, glycol ether, mesitylene, octyl resin, melamine.

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