Products Description of Indigo CAS#482-89-3
Indigo has been used as a traditional vat dye for more than 3,000 years. The famous saying from Xun Kuang during the Warring States period—"Blue comes from bluegrass but is better than bluegrass in color"—actually came from the indigo dyeing methods of that era. In the saying, "qing" refers to the cyan dye, and "blue" is the plant it comes from. Indigo was already being widely used long before the Qin and Han dynasties.
Indigo Chemical Properties
| Melting point | >300 °C(lit.) |
| Boiling point | 405.51°C (rough estimate) |
| Density | 1.01 g/mL at 20 °C |
| Vapor pressure | 0Pa at 100℃ |
| Refractive index | 1.5800 (estimate) |
| Fp | >220℃ |
| Storage temp. | Sealed in dry,Room Temperature |
| Solubility | DMSO (Slightly, Heated, Sonicated), DMF (Slightly) |
| Form | Powder |
| Colour Index | 73000 |
| Pka | -3.83±0.20(Predicted) |
| Color | Dark blue to violet |
| Water Solubility | <0.1 g/100 mL |
| Merck | 144,943 |
| BRN | 88275 |
| Stability | Stable. Incompatible with strong oxidizing agents. |
| InChIKey | COHYTHOBJLSHDF-BUHFOSPRSA-N |
| LogP | 2.7 at 23℃ |
| CAS DataBase Reference | 482-89-3(CAS DataBase Reference) |
| NIST Chemistry Reference | c.i. Vat blue 1(482-89-3) |
| EPA Substance Registry System | C.I. Vat Blue 1 (482-89-3) |
Safety Information
| Hazard Codes | Xi,Xn |
| Risk Statements | 36/38-36/37/38-48/20/21/22 |
| Safety Statements | 26-36 |
| RIDADR | UN 3264 8/PG 3 |
| WGK Germany | 1 |
| RTECS | DU2988400 |
| HS Code | 32041510 |
| Hazardous Substances Data | 482-89-3(Hazardous Substances Data) |
| Toxicity | LD50 oral in mouse: > 32gm/kg |
Product Application of Indigo CAS#482-89-3
