So the mixed indicator of phenolphthalein with alizarin red-methyl red could be used as the new indicator for the alkalify water determination.

采用百里酚蓝-甲酚红、溴甲酚绿-甲基红示剂的试效果。

Alizarin complexone is obtained by the condensation of alizarin with formaldehyde solution and iminodiacetic acid in the presence of alkaline conditions.

素络合示剂是在碱性条件下由素、甲醛亚氨基二乙酸缩合而成。