1. Synthesis of Phthalein Indicators under Microwave Irradiation.

2. The Iron Phthalein Green fills in the gaps of green variety in the fields of iron series pigments, and it has substituted the Chromium Oxide Green in architectural use.

3. Phthalein acid anhydride Photophobic pharmaceutical and has special protective action on the ultraviolet ray. It can cure sunlight dermatitis, eczema, etc.

4. Say in findings report, the chemical contaminant that exists generally in French household is acerbity salt of formaldehyde, aldehyde, phthalein and DDVP.

5. In industry, iodine is the main content of composing organic fuel, which can make phthalein series tar fuel.

6. In the meantime, it can absorpt the toxicity matter such as the mercury , cadmium , sour grease of phthalein , cyanide , chlorine and various bacterium etc by the water pollution.