The rate constants of reactions between metal (Co II, Rh III, Cu II, Ni II and Mn II) tetrasulfophthalocyanines (Mtspc n− ) and solvated electrons ( e − s) have been measured by pulse radiolysis in aqueous methanol solutions. The measured rate constants equal to 0.8–1.8×10 10 M −1 s −1 weakly depend on the kind of metal: the high reactivity is strongly connected with the double nitrogen ring characteristic for metal phthalocyanines. The effectivity of electron scavenging by Mtspc n− have also been measured in the frozen systems: ethylene glycol:water:magnesium chloride or lithium chloride. The frozen thin plates were gamma-irradiated and bleached with light. The differential spectra of irradiated and nonirradiated samples were used to determine the efficiency of electron scavenging: high electron scavenging efficiencies were found.