| Share | Phrase |
|---|
| 16.56% | ferric [physical/chemical] benzoate |
| 16.56% | ferric [physical/chemical] hydrosulfite |
| 16.56% | ferric [physical/chemical] hypophosphite |
| 14.38% | ferric [physical/chemical] formate |
| 13.17% | ferric [physical/chemical] sulfate |
| 11.46% | ferric [physical/chemical] nitrate |
| 11.27% | ferric [physical/chemical] oxide |