| for food contact | 7 | purpose |
| alongside good anti-corrosive properties | 4 | other |
| for eco -friendly | 2 | purpose |
| coating → be → safe | 22 |
| negative | neutral | positive |
| 0.021 | 0.325 | 0.653 |
| Raw frequency | 22 |
| Normalized frequency | 0.354 |
| Modifier score | 0.500 |
| Perplexity | 379.733 |