CAS Number
573-58-0
Formula
C32H22N6Na2O6S2
Weight
696,68
Direct Red 28
| Appearance | Brownish red powder |
| Appearance of solution (1,0 g/L; water) | almost clear to slightly turbid , red solution |
| Transition range at pH 3,0 to pH 5,2 | Violet to orange red |
| Loss on drying (at 110°C) | Max 5,0% |
| Sensitivity test | p/t. |
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