Tris(nonylphenyl) phosphite
ALDRICH/441805
Synonym: Tri(monononylphenyl) phosphite
CAS Number: 26523-78-4
Empirical Formula (Hill Notation): C45H69O3P
Molecular Weight: 689.00
EC Number: 247-759-6
MDL Number: MFCD00015301
Linear Formula: (C9H19C6H4O)3P
Product Type: Chemical
| bp | >360 °C (lit.) |
| density | 0.99 g/mL at 25 °C (lit.) |
| form | liquid |
| InChI | 1S/C45H69O3P/c1-4-7-10-13 |
| InChI key | WGKLOLBTFWFKOD-UHFFFAOYSA |
| Quality Level | 100 ![]() |
| refractive index | n |
| SMILES string | CCCCCCCCCc1ccccc1OP(Oc2cc |
| Application: | TNPP in combination with irganox is used to protect polyamide 6 (PA6) from oxidative degradation during the preparation of flame retardant nanocomposites. TNPP can be used as a stabilizer that prevents the molecular weight reduction and increases the tensile strength of the composite. It can also be used as a chain extender to improve the polymeric viscosity during the melt-blending of poly(hydroxybutyrate-co-hydroxyvalerate) based clay nanocomposites which find potential application as packaging materials. |
| General description: | Tris(nonylphenyl) phosphite (TNPP) is an antioxidant that is majorly used as a stabilizer to improve the performance of polyethylene by decomposing the hydroperoxides. It can also be used to enhance the thermal stability by extending the polymeric chains. |
| Packaging: | 250 mL in poly bottle |
| Symbol | ![]() ![]() ![]() GHS05,GHS07,GHS08,GHS09 |
| Signal word | Danger |
| Hazard statements | H315 - H317 - H318 - H361fd - H410 |
| Precautionary statements | P201 - P273 - P280 - P302 + P352 - P305 + P351 + P338 - P308 + P313 |
| Hazard Codes | Xi,N |
| Risk Statements | 43-50/53 |
| Safety Statements | 36/37-61 |
| RIDADR | UN 3082 9 / PGIII |
| WGK Germany | WGK 3 |
| Flash Point(F) | 404.6 °F - closed cup |
| Flash Point(C) | 207 °C - closed cup |
| bp | >360 °C (lit.) |
| Density | 0.99 g/mL at 25 °C (lit.) |
| Refractive Index | n |
| UNSPSC | 12162002 |





