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.
Synhipol® UV-705
(Tri-(4-hydroxy-TEMPO) phosphite)
Chemical Name: Tri-(4-hydroxy-TEMPO) phosphite;Tris(1-hydroxy-2,2,6,6-tetramethylpiperidin-4-yl) phosphite
CAS No.: 2122-49-8
Molecular Formula：C27H51N3O6P3*
Molecular Structure:
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.
Appearance | Dark red powder |
Purity | ≥ 95.0% |
Melting Point | ≥ 125°C |
Loss on Drying | ≤ 0.50% |
High-efficiency radical scavenger
High boiling point – low volatility during distillation
Excellent thermal stability – does not decompose under process conditions
Effective in both aerobic and anaerobic environments
Broad application in acrylate and methacrylate monomer systems
Synthesis and distillation of hydroxyalkyl acrylates and methacrylatessuch as HEA, HPA, HEMA, and HPMA.
Other (meth)acrylate monomer production processes requiring effective polymerization inhibition
25kgs/carton,Bag,Drum.
Store in a dry, clean, ventilated warehouse.
Avoid exposure to light and heat.
Be careful to prevent leakage, rain and sun during transportation.
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Provide formulation optimization support for water-based/solvent-based systems
Full coverage of REACH, FDA, and GB standards
99.8% on-time delivery rate, 10,000-ton production capacity guarantee
