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PYROGALLOL RED AR

Metal (pM) Indicator
Pyrogallolsulfonephthalein

COAs

Packings

1 g (00001)

1CLVI00055
Print friendly version
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
Revision Date: 14-Dec-2013

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