Trisnonylphenyl phosphite (TNPP) is a hydrolytically stable organophosphite antioxidant used as a processing stabilizer in PVC, polyolefins, and rubber, protecting against oxidative degradation during high-temperature polymer processing. SUNCHEM supports international buyers with TNPP sourcing from qualified Chinese producers, with quality documentation, export coordination, and logistics…
Trisnonylphenyl phosphite (TNPP) is a hydrolytically stable organophosphite antioxidant used as a processing stabilizer in PVC, polyolefins, and rubber, protecting against oxidative degradation during high-temperature polymer processing. SUNCHEM supports international buyers with TNPP sourcing from qualified Chinese producers, with quality documentation, export coordination, and logistics support.
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| Property | Reference value |
|---|---|
| Density | 0.99 g/mL at 25 °C(lit.) |
| Boiling Point | >360 °C(lit.) |
| Flash Point | >230 °F |
| Refractive Index | n20/D 1.528(lit.) |
| Specific Gravity | 0.979～0.9870.990 |
| Sensitive | Moisture Sensitive |
| InChIKey | WGKLOLBTFWFKOD-UHFFFAOYSA-N |
| EPA Substance Registry System | Phenol, nonyl-, phosphite (3:1) (26523-78-4) |
Existing product reference data. Confirm the specification of the offered grade before ordering.
Antioxidant processing stabilizer for PVC and polyolefins
Oxidation inhibitor in rubber compounding
Thermal stabilizer for polymer melt processing
Coating and adhesive antioxidant additive
Synergistic stabilizer with hindered phenol antioxidants
Lubricant and metalworking fluid antioxidant
Packaging film processing stabilizer
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Review the producer TDS, a recent COA and SDS with the quotation.
Run your own tests against your current grade.
Put approved lot limits into the contract and check every COA against them.
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