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黄原酸盐是合成橡胶工业中合成調节剂的中間体,是由二硫化碳与醇在苛性碱溶液中作用而成。反应式如下: CS_2+KOH+EtOH→EtOSCSK+H_2O 铁化合物的定量分析,是根据黄酸能与金属成盐,另外它还能被氧化剂所氧化。 Harding和Doran曾把它在酸性溶液中使成铜盐沉淀[(CSOC_2H_5S)_2Cu],过量的銅游子用碘量法测定。在此以前,Macagno曾用硫酸銅标准溶液以亚铁氰化鉀作指示剂,直接滴定黄原酸水溶液。上面已经谈到,黄原酸能成为銅盐沉淀。由于这一性质,亦可应用重量法进行测定。Johnson把铜盐分离出来,进行灼烧,使成为氧化銅,称重以計算其含量。因为黄
Xanthates are intermediates in the synthesis of synthetic regulators in the synthetic rubber industry and are made from the action of carbon disulfide and alcohol in caustic solutions. The reaction equation is as follows: The quantitative analysis of the iron compounds of CS_2 + KOH + EtOH → EtOSCSK + H_2O is based on the fact that the yellow acid can form a salt with the metal, and in addition it can be oxidized by the oxidant. Harding and Doran have made it into a copper salt precipitation [(CSOC_2H_5S) _2Cu] in an acidic solution, excessive copper travel time by iodometry. Prior to this, Macagno had a standard solution of copper sulfate with potassium ferrocyanide as an indicator, direct titration of xanthic acid solution. As already mentioned above, xanthogenate can become a copper salt precipitate. Due to this nature, gravimetric assays are also available. Johnson separated the copper salt and burned to make copper oxide and weighed to calculate its content. Because yellow