Synhipol® UV-705 (Tri-(4-hydroxy-TEMPO) phosphite, CAS 2122-49-8) is a novel high-efficiency hindered amine radical scavenger with high boiling point, excellent thermal stability, and exceptional anti-polymerization performance in both aerobic and anaerobic environments. It is widely used as a polymerization inhibitor in the synthesis and distillation of specialty (meth)acrylate monomers such as HEA, HPA, HEMA, and HPMA.
