【摘要】 分别采用国标法、电导滴定法、pH值滴定法测定甘蔗蜡的皂化值,探讨电导滴定法和pH值滴定法测定蔗蜡皂化值的操作条件,并对测定结果进行分析。实验结果表明,电导滴定法、pH值滴定法能有效克服甘蔗蜡自身颜色的干扰,测定结果准确可靠,具有较好的相关性。更多还原

【Abstract】 Three methods for measure of saponification value of cane wax, including the National standard method, the conductometric titrimetry and the pH value titrimetry, were investigated here. Besides, the operating conditions of the conductimetric titrimetry and the pH value titrimetry were mainly discussed. It was found that Using the conductimetric titrimetry or the pH value titrimetry could effectively avoided the influence of the color of cane wax and the corresponding measuring results were accurate with a good relativity.更多还原