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o-Cresolphthalein (pH Indicator)

Product Code.
00887
Grade
Purity
CAS No.
596-27-0
Molecular Formula
C2 2H18 O4
Molecular Weight
346.39
H.S.Code
2934.99000
Shelf Life
60 Months

Physical Properties

Physical state at 20 °C
Solid
Colour
Light brown
Melting point/ Freezing point [°C]
219 - 221 °C

Packaging

Specification

Appearance
Light brown powder
pH 8.2-9.8
Colourless to violet red
Absorption maxima at pH 11.3
565 - 569 nm
Specific absorptivity A1%/1cm (at lmax)
Min 1500
Insoluble matter in ethanol
Passes test
Loss on dryig (at 135°C)
Max 0.5%
Sulphated ash
Max 0.5%

Safety Information and Hazard Symbols