Phosphite ester antioxidant designed to improve color, clarity, and light stability of PVC and vinyl chloride copolymers.
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
Approved for food contact when used in PVC
Improves optical transparency
Synergizes with primary metal stabilizers and epoxy stabilizers
Vinyl chloride copolymers
Thank you for your inquiry and interest in ChemPoint.
We will respond to you shortly.
Thanks for your inquiry and interest in ChemPoint. We will respond to you shortly.
If you have an immediate need for the TDS file please call us at 425.372.9464 if you are located in North America or at 800.2436.7646 in you are in the EMEA.
Privacy PolicyChemPoint will not under any circumstances release personal user or registrant information to individuals or companies. All information collection is solely used to support ChemPoint customer service and communications. Read our Privacy Notice
Thanks for your inquiry and interest in ChemPoint. We will respond to you shortly.
Privacy PolicyChemPoint will not under any circumstances release personal user or registrant information to individuals or companies. All information collection is solely used to support ChemPoint customer service and communications. Read our Privacy Notice
.png)
Hi, let us know if you have any questions as you visit our website.
