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Biodegradability of common base oils
| Base oils | Biodegradation rates% |
|---|---|
| Polyester | 80~100 |
| Dibasic acid diester | 60~100 |
| Polyol ester | 60~100 |
| Phthalate diester | 60~70 |
| Polyolefin | ≤20 |
| Polyisobutylene | ≤30 |
| Polypropylene glycol | ≤10 |
| Alkylbenzene | ≤10 |
| Mineral oil | 20~60 |
| Vegetable oil | 70~00 |
