Cobalt(II) phthalocyanine is widely used as a catalyst in various chemical reactions, particularly in the oxidation of organic compounds. It is highly effective in the desulfurization process of fuels, where it helps remove sulfur compounds to meet environmental regulations. Additionally, it is utilized in the production of dyes and pigments due to its stable and intense coloration properties. In the field of electronics, it serves as a semiconductor material in organic electronic devices, including sensors and photovoltaic cells. Its ability to facilitate electron transfer makes it valuable in electrochemical applications, such as in the development of fuel cells and batteries.