WESTON™ DPP
WESTON™ DPP phosphite ester is a diaryl phosphite which can be used to improve the color of unsaturated polyesters. In polyolefins, WESTON™ DPP phosphite ester can be used as a stabilizer in applications where regulatory approval for food contact is not required. It is also used as a secondary stabilizer to improve the light and color stability and to prevent plate-out of polyvinyl chloride. This product has a high phosphorus content and a relatively low molecular weight.
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| Property Name | Value | Unit |
| Appearance | Liquid | -- |
| Color | Colorless, to, light yellow | -- |
| Flash point | 143 | °C |
| Odor | Phenol-like | -- |
| Relative density at 25 °C | 1.2 | -- |
| Solubility in water | Insoluble | -- |
| Specification Name | Value | Unit | Test Method | Test Condition |
| Acid No. | 15.0 max | mg KOH/g | -- | -- |
| Color (APHA , Pt - Co) | 50 max | -- | -- | -- |
| Density at 25°C | 1.21 | lb/gal | -- | -- |
| Flash Point | 143 | °C | -- | -- |
| Formula Weight | 234 | -- | -- | -- |
| Phosphorus Content | 11.6-12.0 | % | -- | -- |
| Refractive Index at 25°C | 1.5550-1.5575 | -- | -- | -- |
| Solubility in aprotic organic solvents | Soluble | -- | -- | -- |
| Solubility in water | Insoluble (hydrolyze) | -- | -- | -- |
| Specific Gravity at 25°C - 15.5°C | 1.200-1.220 | -- | -- | -- |
| Vapor Pressure at 140 °C | 5 | mm/Hg | -- | -- |
| Viscosity at 38°C | 10.5 | cps | -- | -- |
WESTON™ DPP TDS | Technical Data Sheets | English
WESTON™ DPP phosphite ester is a diaryl phosphite which can be used to improve the color of unsaturated polyesters. In polyolefins, WESTONTM DPP phosphite ester can be used as a stabilizer in applications where regulatory approval for food contact is not required. It is also used as a secondary stabilizer to improve the light and color stability and to prevent plate-out of polyvinyl chloride. This product has a high phosphorus content and a relatively low molecular weight.
Safety Data Sheets are available upon request | Safety Data Sheets
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