论文部分内容阅读
用氢氧化钾-甲醇标准溶液非水相中和滴定,二次微商法确定终点,快速测定多亚甲基多苯基异氰酸酯中总酸度。
Non-aqueous potassium hydroxide - methanol standard solution neutralization titration, the second micro-commercial method to determine the endpoint, rapid determination of total methylene polyphenyl polyphenyl acidity.