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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.
Fulfilled By ChemPoint
- Manufacturer: SI Group
- Product Line: SI Group Phosphite Antioxidants
- Product: WESTON™ Liquid Phosphite Antioxidants
- Industries: Adhesives | Elastomers | Metal Processing & Fabrication | Plastics
- Authorized Countries: Canada | Mexico | United States
Fulfilled By ChemPoint
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Overview
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
Related Chemistries
Plastics
Related End Markets
Elastomers
Metal Processing & Fabrication
Plastics
Related Functions
Adhesives
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