| Test Item | Qualified Grade |
| Appearnace | Dark purple powder or granule |
| Initial Melting ponit ℃≥ | 45.0 |
| Assay(GC) %≥ | 95.0 |
| Ash %≤ | 0.3 |
| Heating Loss %≤ | 0.5 |
As a kind of ursol rubber antioxidant, Antioxidant 6PPD (4020) has better compatibility with rubbers, seldom blooming, low volatility, low toxicity, with excellent antioxidant, anti-ozone, anti-flex cracks , anti-insolation cracks, strong inhibition on copper ormanganese and other toxic metals, applicable to all types of synthetic rubber and natural rubber.
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