• 研究超声波辐照作用下烯(PB)在环已溶液中的降解丙烯AA)的共疑反应。

    The ultrasonic degradation of polybutadiene (PB) and block copolymerization of PB with acrylic acid(AA)in cyclohexane solution were studied.

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  • 它们苯甲醛、正葵14-甲基十五烷酸甲酯丙三醇苯甲69-十八碳甲酯、角鲨硬脂

    They were acetic acid, benzaldehyde, n caproic acid, 14 methyl pentadecanoic methyl ester, glycerin, benzoic acid, 6,9 octadecadienoic methyl ester, squalane, stearic acid and oleic eicosyl ester.

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  • 糠醛为原料,先制得顺丁烯,用顺丁烯三氯条件下加成,然后水解得到1,1,2 乙三羧收率71%。

    The preparation of 1,1,2 ethanetricarboxylic acid from addition reaction of maleic acid with germaniumane trichloride under acidic condition, then hydrolysis has been investigated, the yield is 71%.

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  • 产品成份:去离子水甘油红花提取液尿囊素苯氧乙醇透明PEG - 40氢化蓖麻、吡咯钠、EDTA -钠、香料

    Ingredients: Deionized Water, Glycerin, Butanediol, Safflower Extract, Allantoin, Phenoxyethanol, ha, PEG-40 Hydrogenated Castor Oil, Pyrrolidone Carbozylic Acid, EDTA-Disodium Salt, Essence.

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  • 结论青海防风脂肪主要化学成分丁基邻、 十八甲酯甲酯、 十一烷酸甲酯

    Conclusion The main chemical components of the fatty oil in Carum carvi L. were dibutyl phthalate, octadecanoic acid methyl ester, eicosanoic acid methyl ester, he…

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  • 成分法国等渗温泉水、透明质小黄瓜萃取精华、柠檬提取物多效美白复合精华氧化钛角鲨霍霍巴VC

    Ingredients: France isotonic hot spring water, hyaluronic acid, cucumber extract, lemon extract, complex multi-effect whitening essence, titanium dioxide, Squalane, Jojoba Oil, VC phosphate etc.

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  • 采用毛细管气相色谱法,以外标测定枸橼琼中乙醇氯甲氯仿四氢呋喃二烷吡啶甲苯的含量,用串联的HP -1 0。

    A simple capillary GC method for the determination of residual ethanol, dichloromethane, chloroform, tetrahydrofuran, 1, 4 dioxane, pyridine and toluene in tropisetron citrate was established.

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  • 采用毛细管气相色谱法,以外标测定枸橼琼中乙醇氯甲氯仿四氢呋喃二烷吡啶甲苯的含量,用串联的HP -1 0。

    A simple capillary GC method for the determination of residual ethanol, dichloromethane, chloroform, tetrahydrofuran, 1, 4 dioxane, pyridine and toluene in tropisetron citrate was established.

    youdao

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