Iodolyte Z-100 35111 A 100 mM iodide/tri-iodide electrolyte formulated with a higher boiling point solvent which makes it suitable for long term stability assessments. Redox couple: iodide/tri-iodide Redox concentration: 100 mM Solvent: 3-methoxypropionitrile Additives: ionic liquid, alkylbenzimidazole, thiocyanate.