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WESTON™ 398
Versatile phosphite stabilizer that improves color, processing stability, and end-use of a variety of polymers.
WESTON™ 398 is a phosphite antioxidant that improves color and processing stability during recovery, drying, compounding, processing and end use. It has low nonylphenol content and synergizes when used along side hindered phenolic antioxidants.
Specifications
Appearance: Clear liquid Specific Gravity @ 25 °C: 0.980-0.992 Color (Pt - Co): 75 max Flash Point (Closed Cup): 196 °C Density @ 25 °C: 0.98 g/mL Vapor Pressure @ 6 mm Hg: 245 °C Molecular Weight: 688 g/mol Viscosity @ 60 °C: 250 cps Acid Number: 0.25 mg KOH/g Refractive Index @ 25 °C: 1.5250-1.5280 Free Nonylphenol Content: ≤0.1 Phosphorus Content: 4.1-4.5% Chlorine Content: < 25 ppm Free Phenol Content: < 50 ppm Specific Heat: 0.4 mcal/mg°C Thermal Conductivity: 0.0003 gcal/sec(cm²)(°C/cm) Auto-ignition Temperature: 439 °C
Primary Chemistry: Trisnonylphenyl Phosphite
Features & Benefits
Low color Low nonylphenol content Synergizes when used along side phenolic antioxidants
Problems Solved
High concentration of nonylphenols in liquid phosphite antioxidants Staining and coloring issues with the use of phosphite antioxidants Compatibility and processability of phosphite antioxidants in HDPE and LLDPE applications
Applications
High density polyethylene, linear low density polyethylene
The SI Group portfolio of WESTON™ phosphite antioxidants protects plastics and elastomers from peroxide decomposers and offers excellent synergism with primary antioxidants, such as hindered phenols.
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Thank you for your inquiry and interest in ChemPoint. We will respond to you shortly.
ChemPoint will not under any circumstances release personal user information to individuals or companies. All information collection is solely used to support ChemPoint customers service communications. Read our Privacy Notice.
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