Th4 P4 O18

Th₄P₄O₁₈ is a thorium phosphate ceramic compound belonging to the family of actinide phosphates, which are primarily investigated for nuclear waste immobilization and long-term radioactive material sequestration. This material is largely of research interest rather than established commercial production, valued for its potential chemical durability and resistance to leaching in geological disposal environments. Engineers and nuclear materials scientists evaluate such thorium-based phosphate ceramics as candidate waste forms because of their structural stability and the ability to incorporate actinides into crystal lattices over geological timescales.