Phosphite ester antioxidant designed to improve color, clarity, and light stability of PVC and vinyl chloride copolymers.
Note: Product Fulfillment Provided by the Producer
Note: The producer provides fulfillment and controls personal data. ChemPoint mediates to share data with the producer.
WESTON™ 439 is a phosphite ester antioxidant that improves the color, light stability and optical transparency of PVC and vinyl chloride copolymers. It improves performance of the polymer when used along side primary metal stabilizers and epoxy stabilizers.
Appearance: Clear liquid
Color (Pt - Co): 50 max
Acid Number: 0.20 mg KOH/g max
Refractive Index @ 25 °C: 1.5040-1.5095
Phosphorus Content: 5.4%
Specific Gravity @ 25 °C: 0.965-0.990
Vapor Pressure @ 6 mm Hg: 175 °C
Flash Point (Closed Cup): 177 °C
Soluble: Most common aprotic organic solvents
Insoluble: Water
Primary Chemistry: Poly 4,4' Isopropylidenediphenol C₁₂-₁₅ Alcohol Phosphite
Approved for food contact when used in PVC
Improves optical transparency
Synergizes with primary metal stabilizers and epoxy stabilizers
Clarity and color stability issues in PVC and vinyl polymers
Degradation and staining in PVC when exposed to light and processing temperatures
Vinyl chloride copolymers
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 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 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.
The document currently is provided in the following languages from the supplier at this time.
The document currently is provided in the following languages from the supplier at this time.
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 - Europe, Middle East, Africa
