| Description | C.I. Pigment Red 172 (C.I. Food Red 14:1) is a food additive. |
| Synonyms | C.I. Acid Red 51:1, Pigment Red 172, Erythrosine-aluminum lake, C.I. Food Red 14:1, Tetraiodofluorescein, Aluminum, Acid Red 51:1 |
| molecular weight | 851.86 |
| Molecular formula | C20H6I4O5.2/3Al |
| CAS | 12227-78-0 |
| Storage | Powder: -20°C for 3 years | In solvent: -80°C for 1 year | Shipping with blue ice. |
| Solubility | DMSO: 20 mg/mL (23.4 mM), Sonication is recommended. Ethanol: < 1 mg/mL (insoluble or slightly soluble) H2O: < 1 mg/mL (insoluble or slightly soluble), Sonication is recommended. |
| References | 1. Chikako Hatta，et al. Contact member, drying apparatus, and printing apparatus:WO2022224915A1. |