| Specification |
| Product Name |
TROPAEOLIN O |
| Synonyms |
Acid orange 6; Chrysoin; Resorcinol yellow |
| CAS NO. |
547-57-9 |
| C.I. NO. |
14270 |
| Molecular Formula |
C12H9N2NaO5S |
| Formula Weight |
316.27 |
| Appearance |
Dark-orange to rust-colored powder |
| Structure |
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| Tests |
Limits |
| Lambda max. |
- 490nm (in 0.1N Sodium Hydroxide) |
| Dye content |
- ~65%
|
| Visual Transition Interval |
- From pH 11.0 (yellow)
To pH 12.7 (red)
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| Solubility (10mg/ml 1N NH4OH) |
- Clear, red brown solution |
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| REVISED: 1-1-2012 |
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