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Lab Chemicals
pH Indicator (Solid)
PHENOLPHTHALEIN INDICATOR
PHENOLPHTHALEIN INDICATOR
3,3-Bis(4-hydroxyphenyl)-1(3H)-isobenzofuranone
Article No.
05172
Grade
Purity
CAS No.
77-09-8
Molecular Formula
C
2
0
H
1
4
O
4
Molecular Weight
318.33
H.S. Code
2932.2090
Shelf Life
60 Months
MSDS
DE
EN
FR
KO
PT
ES
TH
TR
Certificate of Analysis (COAs)
Physical Properties
Physical state at 20 °C
Solid
Colour
White powder
Odour
Odorless
Melting point/ Freezing point [°C]
261 - 263 °C
Density [g/cm3]
1.299
Solubility in water [% weight]
Slightly soluble in water
Packings
25 g
(00025)
50 g
(00050)
100 g
(00100)
500 g
(00500)
Specifications
Appearance
A white to off white powder
pH range (8.2 - 10.0)
Colourless to red-violet
Absorption maxima (buffer pH 9.8)
551 - 554 nm
Sensitivity
Passes test
Sulphated ash
Max 0.05%
Chloride (Cl)
Max 0.01%
Sulphate (SO4)
Max 0.01%
Loss on drying (at 110°C)
Max 1%
Safety Information and Hazard Symbols
Symbol: GHS08
Signal Word: Danger
Hazardous Statement: H341-H350-H361f
Precaution Statement: P201-P280-P308+P313
Revision Date :
24-May-2022