o-Cresolphthalein Complexone CAS:2411-89-4

o-Cresolphthalein Complexone is commonly used as a complexometric indicator in analytical chemistry and is particularly useful in the determination of water hardness. It can form stable complexes with metal ions, such as calcium and magnesium, allowing for the accurate titration of these metal ions in water samples. The indicator changes color at the endpoint of the titration, making it easy to determine the concentration of metal ions present. This makes it an important tool in environmental and water quality testing.