Technical datasheet

WESTON™ 705T phosphite

Supplied bySI Group- Last Updated on Mar 16, 2026

WESTON™ 705T phosphite by SI Group is a nonylphenol-free phosphite antioxidant. It is designed to replace TNPP in those instances where a TNPP alternative is sought.
  • It is useful in a variety of other polymer applications such as SBR, NBR, EPDM, BR, SBC, SBS, SIS, ABS, natural rubber latex, synthetic latex, PVC and others.
  • The shelf life of WESTON™ 705T phosphite is 1 year.
  • It is broad FDA and global food contact approved and is also used for fibers, textiles and packaging applications.
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Benefits

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Compliance

Food Contact Approval
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WESTON™ 705T phosphite properties

Other properties

PropertiesValue & unitTest conditionTest method
Acid Value0.0 Visible After LoginVisible After LoginVisible After Login
Assay0.0 Visible After LoginVisible After LoginVisible After Login
Phosphorous Content0.0 Visible After LoginVisible After LoginVisible After Login
Specific Gravity0.0 Visible After LoginVisible After LoginVisible After Login
TIPA Content0.0 Visible After LoginVisible After LoginVisible After Login
Weight Loss0.0 Visible After LoginVisible After LoginVisible After Login
Weight Loss0.0 Visible After LoginVisible After LoginVisible After Login
Solubility PropertiesElementConditionMethod
Soluble inVisible After Login
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