CASR |
: | 130-22-3 |
Molecular Formula |
: | C14H6Na2O7S |
Molecular Weight |
: | 364.24 |
| Specifications | |
|---|---|
| Description: | Yellow to orange powder. |
| Solubility: | Soluble in water and alcohol. |
| Dye content (Spectrophotometry, on dry basis): | min. 70.00% |
| pH transition range (pH 4.3 - 6.3): | Brilliant yellow to pink |
| pH transition range (pH 9.4 - 12.0): | Brown orange to violet |
| Absorption, L max (pH 4.3): | 418 - 424nm |
| Absorption, L max (pH 6.3): | 514 - 520nm |
| Absorption, L max (pH 9.4): | 445 - 451nm |
| Absorption, L max (pH 12.0): | 554 - 558nm |
| Loss on drying,110°C: | 8.00% max. |
