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Doverphos® 9 (DPIOP)

Doverphos® 9 (DPIOP) by Dover (ICC Industries) is a diphenyl isooctyl phosphite. Acts as an antioxidant and effective liquid phosphite heat stabilizer. Possesses lowest molecular weight, and highest phosphorus content of alkyl-aryl phosphites. Doverphos® 9 (DPIOP) can be used in rigid and flexible PVC applications as a secondary stabilizer to give brighter, more consistent colors & improve heat stability of PVC. Recommended usage ranges from 0.1 to 3.0%.
Product Type
  • Antioxidants > Phosphites
  • Heat Stabilizers
Chemical Composition
Diphenyl isooctyl phosphite
CAS Number
SpecialChem additionnal informations based on CAS Number : 26401-27-4

Hansen Solubility Parameters

[16.2, 0.1, 1.4]
[δD - Dispersion force interactions, δP - Polar force interactions, δH - Hydrogen bond force interactions]

Please note, these HSP values are estimations. It is based upon the “like seeks like” principle. It splits an ingredients interactions into three parameters; δD (Dispersion force interactions), δP (Polar forces interactions) and δH (Hydrogen bond force interactions). Hansen Solubility Parameters can help you find a wide range of products that are predicted to be compatible with Doverphos® 9 (DPIOP). A practical determination of these HSP values would provide higher certainty. Learn More.

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