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WESTON® 398 phosphite

Technical Datasheet | Supplied by SI Group
WESTON® 398 phosphite by SI Group is phosphite antioxidant stabilizer for HDPE, LLDPE, SBR, ABS and PVC. It improves the color and processing stability during recovery, drying, compounding, processing and end use. Synergism can be established when this product is combined with other stabilizers such as hindered phenols. WESTON® 398 phosphite can be added alone or in combination with the monomers and/or in antioxidant emulsions during recovery and/or during compounding. It possesses low color and low nonylphenol content. The shelf life of the product is one year.
Product Type
Antioxidants > Phosphites
Chemical Composition
Trisnonylphenyl Phosphite
CAS Number

Compatiblity with other products

Find products that are predicted to be compatible with WESTON® 398 phosphite.

This list of compatible products is generated out of estimated HSP values. A practical determination of these HSP values would provide higher certainty.
Learn more about Hansen Solubility Parameters (HSP) and their use in predictive formulation.

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