Bis(2,2,6,6-tetramethyl-4-piperidinyl)sebacate azoxyl radical CAS Number: 2516-92-9
Pharmaceutical Materials 2025-03-02
CAS Number: 2516-92-9
Molecular Formula: C28H50N2O6-2
Molecular Weight: 510.7064 g/mol
Appearance: White to yellow to orange solid
Melting Point: 99.0 to 103.0 °C
Usage: Mainly used as a light stabilizer in polymers.
Bis(2,2,6,6-tetramethyl-4-piperidinyl)sebacate, also known as light stabilizer 770, is a polymer-type high-molecular-weight hindered amine light stabilizer. It has the CAS number 52829-07-9 (note: the CAS number 2516-92-9 provided in the question does not match this compound, so it has been corrected here). This compound exhibits excellent processing thermal stability, good compatibility with resins, and low volatility and migration. It is widely used in polypropylene, polyethylene, polystyrene, ABS resins, polyurethanes, polyoxymethylene, and polyester elastomers. When used in combination with antioxidants and UV absorbers, it demonstrates a synergistic effect, further enhancing the heat and light aging resistance of the products.
| Property | Value |
|---|---|
| CAS Number | 52829-07-9 |
| Molecular Formula | C28H52N2O4 |
| Molecular Weight | 480.72 g/mol |
| Appearance | White or slightly yellow crystalline powder |
| Melting Point | 81-85°C |
| Solubility | Soluble in benzene, chloroform, methanol, ethanol, and ether; insoluble in water |
| Density | Not specifically determined |
| Refractive Index | Not specifically determined |
| Stability | Stable under normal conditions |
| Usage | Polymer-type high-molecular-weight hindered amine light stabilizer |
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