LeNOX – ANTIOXIDANT 626
Technical Datasheet
Chemical Name: Bis-(2,4-di-tert.-butylphenol)pentaerythritol diphosphite
Molecular formula: C33H50O6P2
Molecular Weight: 604
CAS: 26741-53-7
Chemical Structure :

LeNOX – Antioxidant 626
Physical Properties:
| Appearance | White to off-white powder | |
| Melting Range | 170-180℃ | |
| Purity | ≥99% | |
| Acid value (mg KOH/g) | ≤0.3 | |
| Light Transmittance | 425nm | ≥98% |
| 500nm | ≥98% | |
| Volatiles | ≤0. 3% | |
| Hydrolyze time (h) | ≥14 | |
| Active Content | >99% | |
Solubility: (At 20℃g/100ml solvent) :
| Water | Insoluble |
| Benzene | 34 |
| Acetone | 1 |
| Ethyl Acetate | 4 |
Feature/Benefits :
LeNOX – 626 recommended to be used in rigorous processing conditions.
LeNOX- 626 provide significant advantages, such as:
Long-term thermal stability during process
Less color change of higher temperature processing application.
Maintenance of initial melt flow rate
Application :
LeNOX – Antioxidant 626 specially developed for higher temp. processing application like Nylon , SAN and other products.
it can also be used in polymers such as engineering plastics, styrene homo-and copolymers. Polyurethanes, elastomers, adhesives, and other organic substrates.
LeNOX – AO 626 can be used in combination with light stabilizers.