Technical datasheet

WESTON™ PTP phosphite ester

Supplied bySI Group- Last Updated on Mar 16, 2026

WESTON™ PTP phosphite ester by SI Group is phosphite antioxidant. This specialty product is used in foamed polyurethanes to control color development and prevent bun scorching. It is useful when a high molecular weight phosphite is required. The shelf life of WESTON™ PTP phosphite ester is 1 year.
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WESTON™ PTP phosphite ester properties

Other properties

PropertiesValue & unitTest conditionTest method
Acid Value0.0 Visible After LoginVisible After LoginVisible After Login
Color, APHA0.0 Visible After LoginVisible After LoginVisible After Login
Density0.0 Visible After LoginVisible After LoginVisible After Login
Flash Point0.0 Visible After LoginVisible After LoginVisible After Login
Formula Weight0.0 Visible After LoginVisible After LoginVisible After Login
Hydroxyl Value0.0 Visible After LoginVisible After LoginVisible After Login
Hydroxyl Value0.0 Visible After LoginVisible After LoginVisible After Login
Phosphorous Content0.0 Visible After LoginVisible After LoginVisible After Login
Refractive Index0.0 Visible After LoginVisible After LoginVisible After Login
Specific Gravity0.0 Visible After LoginVisible After LoginVisible After Login
Vapor Pressure0.0 Visible After LoginVisible After LoginVisible After Login
Viscosity0.0 Visible After LoginVisible After LoginVisible After Login

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