摘要
研究了金达莱花色素在不同pH值溶液中的颜色变化,并与其它指示剂进行了比较.结果表明,金达莱花色素能准确指示酸碱滴定的终点,其pH变色范围为5.77~7.74,颜色由粉红色变为黄绿色.
The color change of Jindalai flower pigment was investigated, a sequent colour change from pink to yellow, and green is observed when pH value increases from 5.77 to 7.74.
出处
《延边大学学报(自然科学版)》
CAS
2005年第2期121-123,共3页
Journal of Yanbian University(Natural Science Edition)
关键词
金达莱花色素
酸碱指示剂
变色范围
Jindalai flower pigment
acid-base indicator
range of colour change