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WESTON™ TNPP
WESTON™ TNPP is a versatile phosphite stabilizer that improves color, processing stability, and the end use of a variety of polymers; similar to WESTON® 399, but with a higher flash point.
WESTON™ TNPP is a cost-effective phosphite antioxidant that improves color and processing stability during recovery, drying, compounding, processing, and end use. It has low nonylphenol content, is approved for food contact, and synergizes when used alongside hindered phenolic antioxidants.
Specifications
Appearance: Clear liquid Specific gravity @ 25°C: 0.980–0.992 Color (Pt-Co): 75 max Flash point (closed cup): 207°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: 0.05 mg KOH/g Refractive index @ 25 °C: 1.5250–1.5280 Free nonylphenol content: 3.0% 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) Autoignition temperature: 439°C
Primary Chemistry: Trisnonylphenyl phosphite
Features & Benefits
Low color Low nonylphenol content Synergizes when used alongside phenolic antioxidants Food contact approvals
Problems Solved
Low flashpoint of liquid phosphite antioxidants High level of nonylphenols in liquid phosphite antioxidants Incompatibility or synergy issues of phosphite antioxidants with hindered phenolic antioxidants
Applications
High-density polyethylene Linear low-density polyethylene
The portfolio of WESTON™ liquid phosphite antioxidants offers excellent synergism, improved color, and processing stability and offers a variety of food contact approvals depending on your plastic applications.
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
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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