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PYROGALLOL RED AR Metal (pM) Indicator Pyrogallolsulfonephthalein
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Specification
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General
Description
| Article No. | 05515 | Grade | AR |
| Purity | CAS No. | 32638-88-3 | |
| Molecular Formula | C19H12O8S | Molecular Weight | 400.04 |
| H.S. Code | 2934.9990 | 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 | ||||
Specifications
| Appearance | Green to brown colored powder | Absorption maxima in pyridine/water | 540 – 546 nm |
| Absorptivity (A 1%/1cm; at λmax) | Min 850 | Loss on drying (at 135°C) | Max 5% |
| Residue on ignition (as SO4) | Max 1% |
Safety Information and Hazard Symbols
Safety Statement: 22-24/25
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