易溶于水，微溶于乙醇，不溶于苯和氯仿。1%水溶液pH为2.15，其水溶液呈浅黄褐色，加盐酸后变成黄色，加氢氧化钠后则变成蓝紫色。有刺激性。Colour Index Number 58005。 测定氟化物。酸碱指示剂，pH3.7(黄)-5.2(紫)。能与许多金属离子生成带色化合物，供锆、钍、铝、钛及铍的显色反应和比色测定。显微染色剂，神经组织的活体染色，植物细胞学中染色体染色和检定颠匣碱的试剂。 茜素红S在成骨培养中用于钙沉积的检测。 • 它已用于主动脉外植体钙化的定量分析。 • 它已可用于成骨细胞培养的矿物质染色。 Soluble in water, slightly soluble in ethanol, insoluble in benzene and chloroform. The pH value of 1% aqueous solution is 2.15, and its aqueous solution is light yellow brown. It turns yellow after adding hydrochloric acid, and turns blue purple after adding sodium hydroxide. It's stimulating. Colour Index Number 58005 • Alizarin Red S has been used for checking the calcium deposits in osteogenic culture. • It has been used for the quantitative analyses of calcification in aortic explants. • It has been used for mineral staining in osteoblast cultures.