Trialkyl phosphite ester antioxidant that functions as a secondary stabilizer in a variety of polymers that do not require food contact.
WESTON™ TDP is a trialkyl phosphite ester antioxidant that acts as a peroxide scavenger, providing color and processing stability in a variety of polymers and other materials such as coatings and lubricants.
Appearance: Clear liquid
Specific Gravity @ 25 °C: 0.884-0.984
Acid Number: 0.05 mg KOH/g
Refractive Index @ 25 °C: 1.4530-1.4610
Phosphorus Content: 6.2%
Color (APHA, Pt/Co): 50 max
Molecular Weight: 502 g/mol
Flash Point (Closed Cup): 160 °C
Viscosity @ 38 °C: 11.6 cps
Density @ 25 °C: 0.89 g/mL
Vapor Pressure @ 5 mm Hg: 180 °C
Soluble: Most common aprotic organic solvents
Primary Chemistry: Triisodecyl Phosphite
Effective in a variety of materials including coatings and lubricants
Peroxide degradation of non-food polymers and formulations
Color and heat stability issues in paints, coatings, and lubricants
PET fibers
SI Group's Morgantown, WV facility is the world’s largest phosphite production facility.
SI Group's extensive portfolio of speciality antioxidants holds the solution to your tpo formulating challenges
WESTON™ is a collection of high-purity liquid and solid phosphite antioxidants, and liquid phosphite esters.
Explore our range of plastic additives from SI Group that are designed for optimal performance in building and construction applications.
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