ANTIOXIDANT 626 CAS NO.26741-53-7

Chemical name: Bis(2,4-di-tert-butylphenyl) pentaerythritol diphosphite
CAS No.：26741-53-7
Molecular formula：C33H50O6P2
Molecular weight：604
Molecular structure


Specification
Appearance: White powder
Assay，%：≥95.0
Melting point，℃：170.0-180.0
Volatility，%：≤ 1.0
Acid value (mgKOH/g), %: ≤ 1.0
Free 2,4-di-tert-butyl-phenol, %: ≤ 1.0


Solubility (25℃, g/100g solvent)
Acetone: 8.5 Heptane: 4.5 Hexane:4.8 Methanol:1.9 Mineral Oil:10
THF:35 Toluene:35.7 Water ＜0.01


Application
ANTIOXIDANT HONOX-626 is a highly effective phosphite antioxidant which is
superior to the other phosphite antioxidants in the protection of polymer’s
color. It provides excellent color stabilization during compounding, fabrication
and end use. It is an excellent stabilizer for reducing polymer degradation during
processing.

It is often blended with phenolic primary antioxidants such as 1010 and 1076 to
prepare composite antioxidant which improves the thermo-stability of polymer
processing. It is widely used in PE, PP, PS, PA, PC, ABS, PVC and many other
polymer materials.
info at hhochem.com

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