| Description | C.I. Vat Yellow 4 is a viscous orange liquid. Used for coloring of cotton, wool and cellulose acetate. |
| Synonyms | NSC-30987, NSC30987, NSC 30987 |
| molecular weight | 332.35 |
| Molecular formula | C24H12O2 |
| CAS | 128-66-5 |
| Storage | Powder: -20°C for 3 years | In solvent: -80°C for 1 year |