| Item | Requirements |
| Appearance | Colourless liquid with a characteristic smell |
| Melting point, ℃ | 183.0~187.0 |
| Volatilizing, % | Max. 0.30 |
| Clarity of solution | Clear solution |
| Transmittance (425nm), % | Min. 98.0 |
| Transmittance (500nm), % | Min. 98.0 |
| Acidity, mg KOH/g | Max. 0.30 |
| Assay, % | Min. 99.0 |
| Content of 2,4-di -tert-butyl –phenyl, % | Max. 0.20 |
| Hydrolytic Stability | Pass |
Uses:
Antioxidant 168 is a kind of phosphite ester antioxidant. Good synergistic with antioxidant, for example, antioxidant 1010, antioxidant 1076, applied in plastic contact food. It can be widely used for PE, PP, PC resin and so on .The amount to be used may be 0.1%~1.0%.
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