Select Your Region
WESTON™ DPP
WESTON™ DPP is a diaryl phosphite ester antioxidant with a high phosphorus content and relatively low molecular weight. Improves color and light stability in polymers that do not require food contact.
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
Quantity
Documents
Overview
WESTON™ DPP is a phosphite ester antioxidant that improves color and light stability in polyolefins and other polymers that do not require food contact approvals. It has a high phosphorus content and relatively low molecular weight and can be used to prevent plate-out in PVC.
Specifications
Appearance: Clear liquid
Specific gravity @ 25°C: 1.200–1.220
Acid number: 15.0 mg KOH/g
Refractive index @ 25°C: 1.5550–1.5575
Phosphorus content: 11.6%–12.0%
Color (APHA, Pt-Co): 50 max
Molecular weight: 234 g/mol
Flash point (closed cup): 143°C
Viscosity @ 38°C: 10.5 cps
Density @ 25°C: 1.21 g/mL
Vapor pressure @ 5 mm Hg: 140°C
Soluble: Most common aprotic organic solvents
Insoluble: Water, with hydrolyze in the presence of water
Primary Chemistry: Diphenyl phosphite
Features & Benefits
- Prevents plate-out in PVC
Problems Solved
Low phosphorus content of traditional diphenyl phosphite antioxidants Low color or light stability in non-food plastic or polymer applications Plate-out or degradation issues in PVC plastics
Applications
Unsaturated polyesters
Related Chemistries
Plastics
Related End Markets
Elastomers
Metal Processing & Fabrication
Plastics
Related Functions
Adhesives
SI Group Phosphite Antioxidants Articles
SI Group WESTON™ Liquid Phosphites
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.
SI Group WESTON™ Phosphite Antioxidants
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.
SI Group Additives for Packaging Plastics
SI Group offers a broad range of plastic additives for the stability and durability of your packaging plastics. Learn more today!
Stabilization and Processing of Recycled Plastics
Compounders and recyclers face multiple challenges with the stabilization and processing of recycled plastics. Learn more and explore our solutions
Have questions? Can't find the right product?
Ask our Experts
Talk to an Expert
Can't find the right product?
When You're Ready
Get a Quote
Ask a Question
Request a Sample
Request a Document
Document Download
Thank you
Your document download will begin 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.
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.
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.
Document Download
The document currently is provided in the following languages from the supplier at this time.
Document Download
The document currently is provided in the following languages from the supplier at this time.
Are you in the correct region?
We’ve detected that you are located in a different region than the region selected on the website. Would you like to change your region?
Current Region: English - Canada
