• The method has good sensitivity and selectivity. Proper amount of other halide ions, inorganic acid radical ions and metal ions dont interfere the determination.

    方法具有较高灵敏度选择性相当量的其他离子酸根离子一定量的金属离子干扰测定。

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  • Ethylene oxide is the derivative of ethane and the intermediate of organic chemistry raw materials. It reacts easily with water, alcohol, ammonia, amine, phenol, hydrogen halide, acid and thioalcohol.

    环氧乙烷乙烯衍生物有机化工原料中间体卤化硫醇进行开环反应

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  • Sulfuric acid dimethyl ester, one of the important chemical raw materials ACTS as the methylating agent in the organic synthesis for the purpose of replacing alkyl halide.

    硫酸甲酯是一种重要化工原料有机合成用于代替卤代烷作为甲基化

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  • Methods The substance was synthesized from P-hydroxybenzoic acid through three steps, those are etherification, preparation of acyl halide and amidation of the raw material.

    方法以对羟基苯甲酸为原料,三步合成,即原料化、酰氯制备酰胺化。

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  • The amino acid that lies in gultin has a basic function with silver halide sensitive emulsion.

    本文扼要介绍一项关于硒氰酸钾对高速感光乳剂化学增感作用的研究。

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  • The amino acid that lies in gultin has a basic function with silver halide sensitive emulsion.

    本文扼要介绍一项关于硒氰酸钾对高速感光乳剂化学增感作用的研究。

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