微溶于水和乙醇,易溶于碱液和氨水,微溶于水,溶液不稳定。中性溶液中呈紫红色,在pH不大于10时呈红色,在pH12-14间为浅蓝色,能和钙形成红色螯合物。与UO 、Mg2+、Be2+等形成紫蓝或蓝色配合物。吸收波长560(366)nm。有刺激性。 络合指示剂,用作光度法测定Ca2+、UO 的显色剂及EDTA配合滴定测定Ca2+的金属指示剂。
Used with EDTA in the presence of magnesium as an indicator for calcium titrations.; Quality: Contains an inert diluent.A dye used with EDTA in the presence of mg as an indicator of calcium titrationsIndicator used for the complexometric determination of Ca in the presence of Mg and other metals
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