PYROGALLOL RED
PYROGALLOL RED AR
Metal (pM) Indicator
Short Name: PYROGALLOL RED
Synonym: Pyrogallolsulfonephthalein
Basic Details
Article No.
LG101957
Grade
AR
Purity
CAS No.
32638-88-3
HS Code
2934.9900
Shelf Life
60 Months
Packings Avialable
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
Chemical 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 & Hazard Symbols
Safety Statement
22-24/25