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This investigation provided an environment-friendly process for the synthesis of methyl anthranilate.

摘要提供了一种环境友好的合成工艺制备香料邻氨基

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Water (Aqua), Glycerin, Propylene Glycol, Hydroxyethylcellulose, Tetrasodium EDTA, Citric Acid, Sodium Benzoate.

水(水) ,甘油,丙二醇,羟乙基纤维素, Tetrasodium乙二胺四乙酸,柠檬酸,钠。

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It is ascertained that the PABA may be N-dimethylated using dimethyl sulfate as a methylation agent.

确定以硫酸二N——基化,对对氨基PABA进行N——二基化.

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A simultaneously potentiometric titration method for determining benzaldehyde and benzoic acid in electrosynthesis products was reported.

电位滴定法测定苯电合成产物中的苯醛和,研究了盐酸羟胺量、苯醇和苯含量对测定的影响。

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Thioxanthone photoinitiator was synthesized from DTSA by chlorination and condensation with isopropylbenzene in the presence of anhydrous AlCl3.

以二硫代二(DTSA)经过酰氯化、氯代、然后与异丙苯在三氧化铝催化下缩合成

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Xanthone was efficiently synthesized from o-chlorobenzoic acid first by etherization and then by Friedel-Crafts reaction in the presence of aluminium trichloride.

以邻氯原料,先进行醚化,再在三氯化铝的作下进行傅-克反应,可简洁、高效的合成呫吨酮。

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OBJECTIVE: To study the effects of different dispersing media, such as atolin and ethyl benzoate, on sustained-release properties of chitosan microspheres.

观察液体石蜡和分散介质对壳聚糖载药微球缓释性能的影响。

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In the liquor of acetic acid,the catalyzed synthesis of m-chlorobenzoic acid by the reaction of m-chlorobenzal dehyde and potassium bromate was studied.

在醋酸溶液中,以间氯苯醛、溴酸钾原料合成间氯,分别研究了反应温度、反应时间、原料配比、溶量等条件对合成反应的影响,确定了最佳工艺条件。

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Hordenine propyl formate and chemical osmosis are the two ways of extracting Glutathione(GSH) from yeast have been introduced and compared in this review.

介绍了从酵母中分离纯化谷胱甘肽(GSH)的两种抽提方法:对羟基法和化学渗透法,并对其进行了对比。

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N butyl 2 ethoxy thioacridone was prepared from o chloro benzoic acid and p phenetidine by means of Ullman reaction,cyclization,N alkylation and sulfurization.

以邻氯和对乙氧基苯胺原料,经过胺的苯基化、二芳胺的环化、N-烷基化、硫代化反应合成了N-丁基-2-乙氧基硫代吖啶酮。

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Citral was synthesized by catalytical rearrangement of dehydrolinalool in toluene solution with the present of molybdenyl acetylacetonate, benzoic acid and dimethyl sulfoxide (DMSO).

摘要采脱氢芳樟醇原料,在乙酰丙酮酸钼、、二基亚砜(DMSO)的苯溶液中催化重排合成柠檬醛,考察了柠檬醛在不同体系中的热敏性。

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Using lead benzoxy as curing agent,cured epoxy resin was analyzed by means of IR spectrum and DSC curves.Lead benzoxy was considered to be catalytic curing agent.

铅做固化,通过对环氧树脂固化物的红外光谱及DSC曲线分析,认铅是一种催化型固化

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Three open crown ethers were synthesized for the first time by using parathesin as the terminal group.They were characterized by IR, 1HNMR ,MS and EA.

以对氨基端基合成了3种酰胺型开链冠醚,并通过IR、~1HNMR、MS和元素分析确证了它们的结构。

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Abstract: Using lead benzoxy as curing agent,cured epoxy resin was analyzed by means of IR spectrum and DSC curves.Lead benzoxy was considered to be catalytic curing agent.

摘 要: 采铅做固化,通过对环氧树脂固化物的红外光谱及DSC曲线分析,认铅是一种催化型固化

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This work applied the new type capillary column modified by barium sulfate. It has completed the solubilty of high boiling ester in para-methyl-toluate with the method of chromatography.

研究了硫酸钡微晶改性新型毛细管柱的应.可于色谱法测定完全互熔性高沸点类在对中的溶解度.

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andorite, Andorra, Andorra-la-Vella, Andorran, Andosol, andouille, Andover, andradite, andragogy, Andre,

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3G, 401(K), a,

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华尔街日报

The preservative used in this product is sodium benzoate.

本产品使用剂为苯甲酸钠。

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华尔街日报

They claim that this bottle is paraben free.

他们说这瓶不含对羟基苯甲酸酯。

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华尔街日报

There have been some preliminary studies that show that there could be possible linkage between parabens and cancer.

有一些初步研究表明对羟基苯甲酸酯和癌症间可能存在联系。

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华尔街日报

I would agree that this is a paraben-free product.

我同意这是不含对羟基苯甲酸产品。

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华尔街日报

The paraben issue is a very provocative topic.

对羟基苯甲酸酯问题是一个非常具有挑衅性话题。

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华尔街日报

The company said it recently shifted away from this preservative combination to one with sodium benzoate.

该公司表示,它最近已从这种剂组转向苯甲酸钠。

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Crash Course 综

Now benzoic acid is one of literally infinite possible benzene-based compounds.

现在苯甲酸是几乎无限可能苯基化一。

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漫长告别(下)

Goofballs are one of the barbiturates laced with benzedrine.

Goofballs 是一种含有苯甲酸巴比妥类药

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SciShow - Chemistry

Food scientists have an official term for the unique, concord-y flavor imparted by methyl anthranilate.

食品科学家对邻氨基苯甲酸甲酯赋予独特、和谐风味有一个官方术语。

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问答进行中

Anyway, the deodorant dries fast, isn't sticky, and the ingredients are aluminum-free, paraben-free, cruelty- free, and vegan.

不管怎样,这款除臭剂干得快,不粘,而且成分不含铝、对羟基苯甲酸酯、无残忍且纯素食。

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Scishow 精选系列

Sodium benzoate, for example, has been found to react with ascorbic acid — aka Vitamin C — to produce benzene, a hydrocarbon that's known to cause cancer.

例如,研究发现苯甲酸钠与抗坏血酸——也就是维生素 C——反应产生苯,而苯是一种已知会导致癌症碳氢化

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华尔街日报

There's no conclusive scientific data that links paraben usage and cosmetics directly to cancer, but the possibilities of it being a carcinogen has provoked some limitations on how this ingredient is being used in the cosmetic space.

没有确凿科学数据表明对羟基苯甲酸酯和化妆品使用与癌症直接相关,但它作为致癌可能性已经对这种成分在化妆品领域使用方式提出了一些限制。

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