SZSE：002741
| Product No. | Product name | specifications |
| 1.28041.010 | Congo red (C.I. 22120) | IND25g |
| Item | Ind |
| Transition range | 0 Bluish violet~5.2Red |
| Insoluble matter in water | ≤1.0% |
| Loss on drying | ≤5.0% |
| Residue on ignition(as SO4) | ≤27.0% |
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