Select Your Region
WESTON™ 618F
WESTON™ 618F is a highly effective, phosphite-based color and molecular weight stabilizer for polymers, elastomers, and adhesives.
Quantity
Documents
- Manufacturer: SI Group
- Product Line: SI Group Phosphite Antioxidants
- Product: WESTON™ Solid Phosphite Antioxidants
- Industries: Adhesives | Elastomers | Plastics
- Authorized Countries: Canada | Mexico | United States
Fulfilled By ChemPoint
Fulfilled By ChemPoint
Manufacturer
Product Line
Industries
Authorized Countries
Canada
Mexico
United States
Overview
WESTON™ 618F is a phosphite antioxidant that is highly effective at stabilizing color and molecular weight for a variety of polymers, elastomers, and adhesives. WESTON™ 618F offers both thermal and UV stability while reducing discoloration in polymers containing titanium dioxide pigments (TiO2).
Specifications
Form: Flakes
Color: White
CAS number: 3806-34-6
Molecular formula: C41H82O6P2
Specific gravity @ 15.5°C: 0.92–0.935
Acid number: 1.0 mg KOH/g
Refractive index @ 60°C: 1.456–1.459
Phosphorus content: 7.8%–8.2%
Flash point (closed cup): 185°C
Bulk density: 0.43 g/mL
Melting point: 37°C–46°C
Molecular weight: 732 g/mol
Primary Chemistry: Distearyl pentaerythritol diphosphite
Features & Benefits
- FDA food contact approvals
- Broad range of solubility in most common aprotic organic solvents
- Excellent color stability during processing, fabrication, and end use
- Synergizes when used with benzophenone and benzotriazole light stabilizers
- Reduced discoloration of polymers containing pigments like TiO2
- High performance at low loading levels
- Reduces discoloration of polymers with high processing temperatures that are stabilized with a sulfur-containing nickel-organic complex
- Compatible with polyolefins (such as LDPE and LLDPE), polyesters, elastomers, styrenics, and engineering thermoplastics
Problems Solved
Discoloration or color stability issues of polymers caused by TiO2 pigments Low thermal or UV stability of adhesives or elastomeric formulations Synergy issues of phosphite antioxidants with benzophenone or benzotriazole light stabilizers
Applications
Adhesives Automotive Coatings Paints Sealants Packaging and packaging films Aerospace Furniture Marine Tapes and labels Healthcare devices
Related Chemistries
Plastics
Related End Markets
Related Functions
SI Group Phosphite Antioxidants Articles
Antioxidant and UV Stabilizers for TPO Membranes
The SI Group's extensive portfolio of specialty antioxidants and UV stabilizers holds the solution to your TPO roof membrane formulating challenges.
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 | Building and Construction Plastic Additives
SI Group polymer solutions are essential for the long-term performance benefits for countless building and construction plastic applications.
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
Have questions? Can't find the right product?
Ask our ExpertsWhen 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 - United States
