WESTON™ DPDP is an alkyl-aryl phosphite ester antioxidant that provides color and processing stability in polymers that do not require food contact approvals.
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WESTON™ DPDP is an alkyl-aryl phosphite ester antioxidant that provides color and processing stability in polycarbonate, polyurethanes, ABS polymers, and coatings. It also functions as a secondary antioxidant in PVC.
Form: Liquid
Color: Clear
CAS number: 26544-23-0
Specific gravity @ 25°C: 1.022–1.032
Acid number: 0.05 mg KOH/g
Refractive index @ 25°C: 1.5160–1.5190
Phosphorus content: 8.3%
Color (APHA, Pt-Co): 50 max
Molecular weight: 374 g/mol
Flash point (closed cup): 154°C
Viscosity @ 38°C: 10.3 cps
Density @ 25°C: 1.03 g/mL
Vapor pressure @ 5 mm Hg: 170°C
Soluble: Most common aprotic organic solvents
Primary Chemistry: Diphenyl isodecyl phosphite
Can function as both a primary and a secondary antioxidant
Staining or coloring issues in plastics for non-food applications
Limited flexibility of phosphite antioxidants for use as primary or secondary antioxidants
Automotive
Commercial vehicle components
Consumer goods
Outdoor recreational products
Agriculture tools
Packaging products
Building and construction
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