Pyrogallol Red AR
Metal (pM) Indicator
Pyrogallolsulfonephthalein
Product Code. |
02233 |
Grade |
|
Purity |
CAS No. |
32638-88-3 | |
Molecular Formula |
C19H12O8S |
Molecular Weight |
400.04 |
H.S.Code |
2934.99000 |
Shelf Life |
60 Months |
Physical Properties
| Physical state at 20 °C |
Solid |
Colour |
Dark brown powder |
Melting point/ Freezing point [°C] |
>= 300 °C |
| Boiling point [°C] |
148 - 150 °C |
Initial boiling point [°C] |
148°C |
Final boiling point [°C] |
150 °C |
| Density [g/cm3] |
0.988 |
Solubility in water [% weight] |
Insoluble in water |
Packaging
Specification
| Appearance | Green to brown colored powder |
| Absorption maxima in pyridine/water | 540 - 546 nm |
| Absorptivity (A 1%/1cm; at lmax) | Min 850 |
| Loss on dryig (at 135°C) | Max 5% |
| Residue on ignition (as SO4) | Max 1% |
Safety Information and Hazard Symbols