PYROGALLOL RED AR

Metal (pM) Indicator

Article No. Grade Purity CAS No. Molecular Formula Molecular Weight H.S. Code Shelf Life
SC0778 AR 32638-88-3 C19H12O8S 400.04 2934.9990 60 Months

Packings

1 g

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

Symbol
Signal Word
UN No.
IMCO Class No.
Packing Group
Hazardous Statement
Precaution Statement
Risk Statement
Safety Statement 22-24/25
Revision Date : 14-Dec-2013